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Summary Prospectus |
| Shareholder Fees
(fees paid directly from your investment) |
|
Investor P
Shares |
| Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)
|
|
4.00% |
| Maximum Deferred Sales Charge (Load) (as a percentage of offering price or redemption proceeds, whichever is
lower) |
|
None |
| Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |
|
Investor P Shares |
| Management Fee1,2,3 |
|
0.04% |
| Distribution and/or Service (12b-1) Fees |
|
0.25% |
| Other Expenses4 |
|
0.06% |
| Administration Fees |
|
0.06% |
| Independent Expenses4 |
|
— |
| Total Annual Fund Operating Expenses |
|
0.35% |
| Fee Waivers and/or Expense Reimbursements2,3,4 |
|
— |
| Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements2,3,4 |
|
0.35% |
| |
1 Year |
3 Years |
5 Years |
10 Years |
| Investor P Shares |
$434 |
$508 |
$589 |
$825 |
| For the periods ended 12/31/25
Average Annual Total Returns |
1 Year |
5 Years |
10 Years |
| iShares U.S. Aggregate Bond Index Fund — Investor P Shares |
|
|
|
| Return Before Taxes |
2.55 % |
(1.52 )% |
1.23 % |
| Return After Taxes on Distributions |
1.10 % |
(2.60 )% |
0.17 % |
| Return After Taxes on Distributions and Sale of Fund Shares |
1.49 % |
(1.61 )% |
0.48 % |
| Bloomberg U.S. Aggregate Bond Index
(Reflects no deduction for fees, expenses or taxes) |
7.30 % |
(0.36 )% |
2.01 % |
| Portfolio Manager |
Portfolio Manager of the Master Portfolio Since |
Title |
| James Mauro |
2011 |
Managing Director of BlackRock, Inc. |
| Jonathan Graves |
2025 |
Managing Director of BlackRock, Inc. |
| Marcus Tom |
2025 |
Director of BlackRock, Inc. |
| |
|
| Minimum Initial Investment |
$1,000 for all accounts except: •$50, if establishing an Automatic Investment Plan. •There is
no investment minimum for employer-sponsored retirement plans (not including SEP IRAs,
SIMPLE IRAs or SARSEPs). •There is
no investment minimum for certain fee-based programs. |
| Minimum Additional Investment |
$50 for all accounts (with the exception of certain employer-sponsored retirement plans which may have a lower minimum). |