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vbif:C000209800Member 2026-06-30 0000794105 us-gaap:TaxableMunicipalBondsMember vbif:C000209800Member 2026-06-30 0000794105 us-gaap:USGovernmentCorporationsAndAgenciesSecuritiesMember vbif:C000209800Member 2026-06-30 iso4217:USD pure vbif:Holding Vanguard Bond Index Funds 2026-06-30 0000794105 NYSEArca NYSEArca NYSEArca NASDAQ false N-1A N-CSRS Vanguard Short-Term Bond Index Fund Investor Shares VBISX This semi-annual shareholder report contains important information about Vanguard Short-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Investor Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>7</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.15<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 7 0.0015 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>69,937</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">3,200</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">29<span>%</span></td> </tr> </table> 69937000000 3200 0.29 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">24.5<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">5.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">69.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.245 0.050 0.000 0.693 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Short-Term Bond Index Fund ETF Shares BSV This semi-annual shareholder report contains important information about Vanguard Short-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">ETF Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.03<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0003 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>69,937</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">3,200</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">29<span>%</span></td> </tr> </table> 69937000000 3200 0.29 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">24.5<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">5.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">69.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.245 0.050 0.000 0.693 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Short-Term Bond Index Fund Admiral™ Shares VBIRX This semi-annual shareholder report contains important information about Vanguard Short-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Admiral Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>3</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.06<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 3 0.0006 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>69,937</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">3,200</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">29<span>%</span></td> </tr> </table> 69937000000 3200 0.29 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">24.5<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">5.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">69.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.245 0.050 0.000 0.693 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Short-Term Bond Index Fund Institutional Shares VBITX This semi-annual shareholder report contains important information about Vanguard Short-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.03<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0003 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>69,937</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">3,200</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">29<span>%</span></td> </tr> </table> 69937000000 3200 0.29 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">24.5<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">5.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">69.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.245 0.050 0.000 0.693 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Short-Term Bond Index Fund Institutional Plus Shares VBIPX This semi-annual shareholder report contains important information about Vanguard Short-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Plus Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.02<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0002 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>69,937</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">3,200</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">29<span>%</span></td> </tr> </table> 69937000000 3200 0.29 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">24.5<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">5.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">69.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.245 0.050 0.000 0.693 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Intermediate-Term Bond Index Fund Investor Shares VBIIX This semi-annual shareholder report contains important information about Vanguard Intermediate-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Investor Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>7</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.15<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 7 0.0015 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>52,656</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">2,331</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">27<span>%</span></td> </tr> </table> 52656000000 2331 0.27 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">38.1<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">4.6<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">55.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.381 0.046 0.003 0.558 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Intermediate-Term Bond Index Fund ETF Shares BIV This semi-annual shareholder report contains important information about Vanguard Intermediate-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">ETF Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.03<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0003 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>52,656</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">2,331</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">27<span>%</span></td> </tr> </table> 52656000000 2331 0.27 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">38.1<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">4.6<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">55.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.381 0.046 0.003 0.558 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Intermediate-Term Bond Index Fund Admiral™ Shares VBILX This semi-annual shareholder report contains important information about Vanguard Intermediate-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Admiral Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>3</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.06<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 3 0.0006 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>52,656</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">2,331</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">27<span>%</span></td> </tr> </table> 52656000000 2331 0.27 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">38.1<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">4.6<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">55.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.381 0.046 0.003 0.558 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Intermediate-Term Bond Index Fund Institutional Shares VBIMX This semi-annual shareholder report contains important information about Vanguard Intermediate-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.03<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0003 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>52,656</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">2,331</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">27<span>%</span></td> </tr> </table> 52656000000 2331 0.27 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">38.1<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">4.6<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">55.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.381 0.046 0.003 0.558 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Intermediate-Term Bond Index Fund Institutional Plus Shares VBIUX This semi-annual shareholder report contains important information about Vanguard Intermediate-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Plus Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.02<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0002 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>52,656</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">2,331</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">27<span>%</span></td> </tr> </table> 52656000000 2331 0.27 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">38.1<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">4.6<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">55.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.381 0.046 0.003 0.558 0.012 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Long-Term Bond Index Fund ETF Shares BLV This semi-annual shareholder report contains important information about Vanguard Long-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">ETF Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.03<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0003 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>8,673</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">2,970</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">13<span>%</span></td> </tr> </table> 8673000000 2970 0.13 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">41.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">2.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.7<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">52.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.5<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.</strong></td> </tr> </table> 0.412 0.028 0.017 0.528 0.015 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Long-Term Bond Index Fund Admiral™ Shares VBLAX This semi-annual shareholder report contains important information about Vanguard Long-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Admiral Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>3</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.06<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 3 0.0006 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>8,673</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">2,970</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">13<span>%</span></td> </tr> </table> 8673000000 2970 0.13 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">41.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">2.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.7<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">52.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.5<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.</strong></td> </tr> </table> 0.412 0.028 0.017 0.528 0.015 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Long-Term Bond Index Fund Institutional Shares VBLLX This semi-annual shareholder report contains important information about Vanguard Long-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.03<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0003 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>8,673</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">2,970</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">13<span>%</span></td> </tr> </table> 8673000000 2970 0.13 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">41.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">2.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.7<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">52.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.5<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.</strong></td> </tr> </table> 0.412 0.028 0.017 0.528 0.015 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Long-Term Bond Index Fund Institutional Plus Shares VBLIX This semi-annual shareholder report contains important information about Vanguard Long-Term Bond Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Plus Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.02<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0002 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>8,673</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">2,970</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">13<span>%</span></td> </tr> </table> 8673000000 2970 0.13 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">41.2<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">2.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.7<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">52.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.5<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.</strong></td> </tr> </table> 0.412 0.028 0.017 0.528 0.015 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Inflation-Protected Securities Fund Investor Shares VIPSX This semi-annual shareholder report contains important information about Vanguard Inflation-Protected Securities Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Investor Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>10</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.20<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 10 0.0020 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>28,202</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">130</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">27<span>%</span></td> </tr> </table> 28202000000 130 0.27 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; padding: 6pt 3pt 3pt 3pt;"><strong>Distribution by Stated Maturity % of Net Asset<br/>(as of June 30, 2026)</strong></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">0 - 5 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">48.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">5 - 10 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">36.6<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">10 - 15 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">1.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">15 - 20 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">5.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">20 - 25 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">3.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">Over 25 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">4.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">0.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;"><strong>This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.</strong></td> </tr> </table> 0.489 0.366 0.014 0.050 0.030 0.043 0.008 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Inflation-Protected Securities Fund Admiral™ Shares VAIPX This semi-annual shareholder report contains important information about Vanguard Inflation-Protected Securities Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Admiral Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>5</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.10<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 5 0.0010 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>28,202</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">130</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">27<span>%</span></td> </tr> </table> 28202000000 130 0.27 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; padding: 6pt 3pt 3pt 3pt;"><strong>Distribution by Stated Maturity % of Net Asset<br/>(as of June 30, 2026)</strong></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">0 - 5 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">48.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">5 - 10 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">36.6<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">10 - 15 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">1.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">15 - 20 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">5.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">20 - 25 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">3.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">Over 25 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">4.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">0.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;"><strong>This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.</strong></td> </tr> </table> 0.489 0.366 0.014 0.050 0.030 0.043 0.008 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Inflation-Protected Securities Fund Institutional Shares VIPIX This semi-annual shareholder report contains important information about Vanguard Inflation-Protected Securities Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>3</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.07<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 3 0.0007 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>28,202</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">130</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">27<span>%</span></td> </tr> </table> 28202000000 130 0.27 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; padding: 6pt 3pt 3pt 3pt;"><strong>Distribution by Stated Maturity % of Net Asset<br/>(as of June 30, 2026)</strong></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">0 - 5 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">48.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">5 - 10 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">36.6<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">10 - 15 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">1.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">15 - 20 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">5.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">20 - 25 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">3.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">Over 25 Years</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">4.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 6pt 3pt 3pt 3pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;">0.8<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 6pt 3pt 3pt 3pt;"><strong>This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.</strong></td> </tr> </table> 0.489 0.366 0.014 0.050 0.030 0.043 0.008 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Total Bond Market Index Fund Investor Shares VBMFX This semi-annual shareholder report contains important information about Vanguard Total Bond Market Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div><div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div><table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Investor Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>7</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.15<span>%</span>^¹</td> </tr> </table><table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 7 0.0015 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>398,069</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">17,408</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">21<span>%</span></td> </tr> </table> 398069000000 17408 0.21 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Asset-Backed/Commercial Mortgage-Backed Securities</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">25.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">3.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">67.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.019 0.254 0.034 0.004 0.679 0.010 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Total Bond Market Index Fund ETF Shares BND This semi-annual shareholder report contains important information about Vanguard Total Bond Market Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div><div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div><table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">ETF Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.03<span>%</span>^¹</td> </tr> </table><table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0003 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>398,069</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">17,408</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">21<span>%</span></td> </tr> </table> 398069000000 17408 0.21 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Asset-Backed/Commercial Mortgage-Backed Securities</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">25.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">3.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">67.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.019 0.254 0.034 0.004 0.679 0.010 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Total Bond Market Index Fund Admiral™ Shares VBTLX This semi-annual shareholder report contains important information about Vanguard Total Bond Market Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div><div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div><table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Admiral Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>2</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.04<span>%</span>^¹</td> </tr> </table><table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 2 0.0004 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>398,069</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">17,408</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">21<span>%</span></td> </tr> </table> 398069000000 17408 0.21 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Asset-Backed/Commercial Mortgage-Backed Securities</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">25.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">3.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">67.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.019 0.254 0.034 0.004 0.679 0.010 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div><div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Total Bond Market Index Fund Institutional Shares VBTIX This semi-annual shareholder report contains important information about Vanguard Total Bond Market Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong><strong></strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong><strong></strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.025<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.00025 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>398,069</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">17,408</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">21<span>%</span></td> </tr> </table> 398069000000 17408 0.21 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Asset-Backed/Commercial Mortgage-Backed Securities</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">25.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">3.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">67.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.019 0.254 0.034 0.004 0.679 0.010 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Total Bond Market Index Fund Institutional Plus Shares VBMPX This semi-annual shareholder report contains important information about Vanguard Total Bond Market Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Plus Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.02<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0002 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>398,069</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">17,408</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">21<span>%</span></td> </tr> </table> 398069000000 17408 0.21 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Asset-Backed/Commercial Mortgage-Backed Securities</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">25.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">3.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">67.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.019 0.254 0.034 0.004 0.679 0.010 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Total Bond Market Index Fund Institutional Select Shares VTBSX This semi-annual shareholder report contains important information about Vanguard Total Bond Market Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Select Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>0</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.01<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 0 0.0001 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>398,069</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">17,408</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">21<span>%</span></td> </tr> </table> 398069000000 17408 0.21 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Asset-Backed/Commercial Mortgage-Backed Securities</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">25.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">3.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">67.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments and other assets and liabilities.</strong></td> </tr> </table> 0.019 0.254 0.034 0.004 0.679 0.010 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Total Bond Market II Index Fund Investor Shares VTBIX This semi-annual shareholder report contains important information about Vanguard Total Bond Market II Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Investor Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>4</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.09<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 4 0.0009 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>386,563</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">15,862</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">62<span>%</span></td> </tr> </table> 386563000000 15862 0.62 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Asset-Backed/Commercial Mortgage-Backed Securities</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">24.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">3.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">69.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.</strong></td> </tr> </table> 0.019 0.244 0.033 0.004 0.690 0.010 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Vanguard Total Bond Market II Index Fund Institutional Shares VTBNX This semi-annual shareholder report contains important information about Vanguard Total Bond Market II Index Fund (the "Fund") for the period of <span style="white-space: nowrap;">January 1, 2026</span>, to <span style="white-space: nowrap;">June 30, 2026</span>. semi-annual shareholder report You can find additional information about the Fund at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature</span>. You can also request this information by contacting us at 800-662-7447. https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature 800-662-7447 The report describes changes to the Fund that occurred during the reporting period. <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt;">What were the Fund costs for the last six months?</div> <div style="margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt;"><i>(based on a hypothetical $10,000 investment)</i></div> <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 1pt; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); width: 33%; vertical-align: middle; text-align: center; padding: 2pt 3pt 2pt 3pt;"><strong>Share Class Name</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; padding: 2pt 3pt 2pt 3pt;"><strong>Costs of a $10,000 investment</strong></td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: center; width: 33%; vertical-align: middle; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt 3pt 2pt 3pt;"><strong>Costs paid as a percentage of a $10,000 investment</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.25pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; text-align: center; font-weight: normal; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">Institutional Shares</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;"><span style="float: none;">$</span>1</td> <td style="break-inside: avoid-page; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); text-align: center; font-weight: normal; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; vertical-align: bottom; padding: 2pt 3pt 2pt 3pt;">0.02<span>%</span>^¹</td> </tr> </table> <table style="border-collapse: collapse; break-inside: avoid; width: auto; margin-top: 4pt;"> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: auto;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; width: 0px; vertical-align: top; text-align: center; font-weight: normal; padding: 0;"></td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; padding: 0;"> <div style="margin-top: 0px; line-height: 99%; color: rgb(0, 0, 0); font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left; margin-bottom: 0px;">​¹</div> </td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; line-height: normal; vertical-align: baseline; font-weight: normal; font-family: 'Arial'; font-style: normal; font-size: 8pt; text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 0 0 0 3pt;"> <div style="color: rgb(0, 0, 0); margin-top: 0px; margin-bottom: 0px; line-height: 99%; font-family: 'arial'; font-style: normal; font-size: 8pt; text-align: left;">Annualized.</div> </td> </tr> </table> 1 0.0002 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-after: avoid; break-inside: avoid-page; border-top-color: rgb(0, 0, 0); border-top-style: solid; border-top-width: 0.25pt; height: 20pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; border-right-width: 0; padding: 2pt;"><strong>Fund Statistics<br/>(as of June 30, 2026)</strong></td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; background-color: rgb(242, 242, 242); border-right-color: initial; border-right-style: none; border-right-width: 0; text-align: left; top: 0.7pt; left: 0.7pt; background-image: initial; padding: 2pt;"></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Fund Net Assets<br/>(in millions)</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;"><span style="float: none;">$</span>386,563</td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Number of Portfolio Holdings</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">15,862</td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: 0.5pt; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; height: 20pt;"> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; color: rgb(0, 0, 0); font-size: 8pt; font-family: 'Arial'; text-align: left; font-weight: normal; width: 75%; padding: 2pt;">Portfolio Turnover Rate</td> <td style="break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; color: rgb(0, 0, 0); font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; text-align: right; padding: 2pt;">62<span>%</span></td> </tr> </table> 386563000000 15862 0.62 <table style="width: 100%; border-collapse: collapse; break-inside: avoid;"> <tr style="break-inside: avoid-page;border-top-color: rgb(0, 0, 0);border-top-style: solid;border-top-width: 0.25pt;height: 20pt;border-bottom-color: rgb(0, 0, 0);border-bottom-style: solid;border-bottom-width: 0.5pt"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; background-color: rgb(242, 242, 242); text-align: left; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>Portfolio Composition % of Net Assets<br/>(as of June 30, 2026)</strong></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Asset-Backed/Commercial Mortgage-Backed Securities</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.9<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Corporate Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">24.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Sovereign Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">3.3<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Taxable Municipal Bonds</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">0.4<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">U.S. Government and Agency Obligations</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">69.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-color: rgb(0, 0, 0); border-bottom-style: solid; border-bottom-width: 0.5pt; height: 20pt;"> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; padding: 2pt;">Other Assets and Liabilities—Net</td> <td style="color: rgb(0, 0, 0); break-inside: avoid-page; text-align: right; vertical-align: middle; line-height: normal; font-family: 'Arial'; font-size: 8pt; white-space: nowrap; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;">1.0<span>%</span></td> </tr> <tr style="break-inside: avoid-page; border-bottom-width: initial; border-bottom-color: initial; border-bottom-style: none; height: 20pt;"> <td colspan="2" style="color: rgb(0, 0, 0); break-inside: avoid-page; vertical-align: middle; line-height: normal; text-align: left; font-family: 'Arial'; font-size: 8pt; border-right-color: initial; border-right-style: none; border-right-width: initial; padding: 2pt;"><strong>This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.</strong></td> </tr> </table> 0.019 0.244 0.033 0.004 0.690 0.010 <div style="line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 9pt; font-weight: bold; margin-bottom: 1.5pt; margin-top: 10pt;">How has the Fund changed?</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> <div style="margin-top: 0px; line-height: 99%; font-family: 'arial'; color: rgb(0, 0, 0); font-size: 8pt; margin-bottom: 5pt;">This is a summary of certain changes to the Fund since December 31, 2025. For more complete information, you may review the Fund’s prospectus at <span style="text-decoration-line: underline; color: rgb(0, 0, 0); white-space: nowrap; line-height: 99%; font-family: 'arial'; font-size: 8pt;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span> or upon request at 800-662-7447.</div> https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature 800-662-7447 Annualized. Annualized. Annualized. 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