0000836906 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:C000276099Member 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member oef:RiskLoseMoneyMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:GeneralMarketRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:InvestingInBondMarketsRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:HighYieldSecuritiesRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member us-gaap:InterestRateRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:IncomeRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member us-gaap:CreditRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:BondLiquidityRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:CallRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:ExtensionRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:IndexInvestingRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:ConcentrationRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:InvestinginForeignMarketsRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:ETFShareTradingRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member malvern:AuthorizedParticipantsRiskMember 2025-09-30 2025-09-30 0000836906 malvern:ETFProspectusMember malvern:S000105350Member oef:RiskNotInsuredDepositoryInstitutionMember 2025-09-30 2025-09-30 pure iso4217:USD 2025-09-30 0000836906 false 485BPOS N-1A VANGUARD MALVERN FUNDS 2026-06-02 Fund Summary Investment Objective Vanguard U.S. High-Yield Corporate Bond Index ETF (the “Fund”) seeks to track the performance of a U.S. dollar-denominated, below investment-grade corporate bond index. Fees and Expenses The following tables describe the fees and expenses you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and example below. Shareholder Fees (Fees paid directly from your investment) 0 0 Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0003 0 0.0002 0.0005 Example This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. 5 16 This example does not include the brokerage commissions that you may pay to buy and sell shares of the Fund. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. The Fund has no operating history and therefore has no portfolio turnover information. Principal Investment Strategies The Fund employs an indexing investment approach designed to track the performance of the Bloomberg US High Yield 250MM 2% Issuer Capped Index (the “Target Index”), which measures the performance of U.S. dollar-denominated, high-yield, fixed-rate corporate bonds, including international U.S. dollar-denominated bonds, that have an amount outstanding, or par value, of at least $250 million; are rated high-yield (Ba1/BB+/BB+ or below) using the middle rating of Moody’s, S&P, and Fitch; and have remaining maturities of at least one year. The Target Index caps the exposure of individual issuers at 2% of the total market value of the uncapped index. Under normal circumstances, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the bonds that make up the Target Index.The Fund invests by sampling the Target Index, meaning that it holds a range of securities that, in the aggregate, approximates the full Target Index in terms of key risk factors and other characteristics. The Fund seeks to maintain a dollar-weighted average maturity consistent with that of the Target Index. As of April 30, 2026, the dollar-weighted average maturity of the Target Index was 4.8 years. As with any investment, an investment in the Fund could lose money over any time period. • General Market Risk. The markets in which the Fund invests can be affected by a variety of factors. These factors, which can be real or perceived, may include economic, market, political, and regulatory conditions and developments as well as local, regional, or global events such as wars, military conflicts, natural disasters, and public health issues. In addition, investor sentiment and expectations regarding these factors can also impact the markets. Different parts of the market, including different industries and sectors as well as different types of securities, may react differently to factors that affect the market. These factors can contribute to market uncertainty, market volatility, and fluctuations in the value of the Fund’s investments, thereby resulting in potential losses to the Fund over short or long periods. • Investing in Bond Markets. The Fund may be impacted by the general condition of the bond markets and by factors that affect bonds and bond issuers. For example, as a general rule, bond prices and interest rates move in opposite directions. When interest rates rise, bond prices tend to fall, and when interest rates fall, bond prices tend to go up. Bond income also is affected by changes in interest rates. Interest rates can rise or fall for a number of reasons, including, but not limited to, central bank monetary policy, inflationary or deflationary pressures, and changes in general market and economic conditions. Changing interest rates, including, but not limited to, rates that fall below zero, could have unpredictable effects on the overall market and may expose the bond markets in particular to heightened volatility and potential illiquidity. The degree to which the Fund is impacted by certain bond market risks may vary based on factors disclosed in its principal investment strategies, such as the types of bonds in which it invests and the overall credit quality, average maturity, and/or average duration of its bond holdings. • High-Yield Securities. Bonds rated below investment-grade, also referred to as high-yield securities, are considered speculative with respect to the issuer’s ability, or perceptions of the issuer’s ability, to make timely principal and interest payments. They are more volatile, less liquid, and involve greater risk of default than investment-grade securities. Investing in high-yield securities could result in a loss of income and/or principal for the Fund. • Interest Rate Risk. During periods of rising interest rates, bond prices overall may decline, which could result in a decline in the Fund’s value. The prices of longer-term bonds are more sensitive to changes in interest rates than the prices of shorter-term bonds. • Income Risk. During periods of falling interest rates, the Fund’s income may decline. The income paid by shorter-term bonds is subject to a higher degree of fluctuation than the income paid by longer-term bonds. • Credit Risk. Credit risk refers to the chance that an issuer will default (fail to meet its credit obligations) or fail to make payments in a timely manner, which could result in a loss to the Fund. In addition, negative perceptions of an issuer’s ability to make payments can cause the price of a security to decline. While all debt securities are subject to credit risk to some extent, those with higher credit quality ratings generally pose less credit risk than those with lower credit quality ratings. • Bond Liquidity Risk. If the Fund is unable to sell a security at an advantageous time or price, its returns may be reduced. There may be limited trading in the secondary market for certain debt securities, which could make them more difficult to value or sell. • Call Risk. Certain bonds held by the Fund may be callable. The issuer of a callable bond has the right to “call” (redeem) the bond before its maturity date. Calls on bonds held by the Fund would result in the Fund losing any price appreciation above the bond’s call price. In addition, because bond calls occur more frequently during periods of falling interest rates, the Fund likely would be forced to reinvest the proceeds of any called bonds at a lower interest rate than that of the called bonds, resulting in a decline in the Fund’s income and a potential loss in the value of the Fund’s investments. Frequent bond calls and subsequent reinvestments of the proceeds also would increase the Fund’s turnover rate. • Extension Risk. During periods of rising interest rates, certain bonds held by the Fund may be paid off substantially more slowly than originally anticipated. As a result, the value of the bonds may fall, resulting in a decline in the Fund’s income and a potential loss in the value of the Fund’s investments. • Index Investing. The Fund is subject to risks associated with index investing. Because the Fund generally seeks to track the performance of the Target Index regardless of how the Target Index is performing, the Fund’s performance may be lower than it would be if it were actively managed. Additionally, because the Fund does not hold all of the securities included in the Target Index, it is subject to the risk that the representative sample of securities selected by the advisor will, in the aggregate, vary from the investment profile of the full Target Index. The performance of the Fund’s investments, in the aggregate, may not match the investment performance of the Target Index. This risk, known as tracking error risk, may be heightened during times of increased market volatility or under other unusual market conditions. The Fund also could be negatively impacted by changes to the Target Index made by the index provider or by errors made by the index provider. Any gains, losses, or costs associated with or resulting from an error made by the index provider will generally be borne by the Fund and, as a result, the Fund’s shareholders. • Concentration Risk. Except as may be necessary to approximate the composition of its Target Index, the Fund will not concentrate its investments in the securities of issuers whose principal business activities are in the same industry or group of industries. If the Target Index becomes concentrated and the Fund needs to concentrate in the same industry or group of industries, its performance could be negatively impacted by the industry or industries in which it is concentrated. • Investing in Foreign Markets. Foreign markets can perform differently than U.S. markets. World events could adversely affect the value and/or liquidity of securities of foreign companies or foreign issuers, potentially in ways that differ from impacts to U.S. companies or issuers. Further, global economies and financial markets are becoming increasingly interconnected, which increases the possibility that conditions in one country or region could adversely impact a different country or region. In addition, the rights and remedies associated with investments in a fund that invests in foreign securities may be different than a fund that invests in domestic securities. To the extent that the Fund invests a large portion of its assets in securities of issuers located primarily in one country or region, the Fund’s performance may be hurt disproportionately by the poor performance of its investments in such country or region.  • ETF Share Trading. The Fund’s ETF shares are listed for trading on the Cboe BZX Exchange, Inc. and individual investors may only buy and sell them on the secondary market at market prices. Although it is expected that the market price of an ETF share typically will approximate its net asset value (NAV), there may be times when the market price of an ETF share and its NAV differ significantly. Disruptions to creation and redemption transactions, the existence of significant market volatility, or potential lack of an active trading market for ETF shares (including through a trading halt), as well as other factors, may result in ETF shares trading significantly above (at a premium) or below (at a discount) the Fund’s NAV or the intraday value of the Fund’s holdings. Thus, you may pay more or less than NAV when you buy ETF shares on the secondary market, and you may receive more or less than NAV when you sell those shares. • Authorized Participants. Only Authorized Participants may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of financial institutions that may act as Authorized Participants. The Fund’s Authorized Participants are not obligated to engage in creation or redemption transactions. To the extent that the Fund’s Authorized Participants are unable to or choose not to proceed with creation and/or redemption transactions with respect to the Fund and no other Authorized Participants step forward to engage in creation or redemption transactions with the Fund, the Fund’s ETF shares may trade at a discount to NAV and possibly face trading halts and/or delisting. An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Annual Total Returns This is the Fund’s initial Prospectus, so it does not contain performance data. This is the Fund’s initial Prospectus, so it does not contain performance data. None through Vanguard (Broker fees vary) The expense information shown in the table reflects estimated amounts for the current fiscal year.