iShares Total U.S. Stock Market Index Fund
U.S. stock index fund · tracks Russell 3000 Index
As of its 2026 Q2 report, iShares Total U.S. Stock Market Index Fund held 2,669 positions with $4.52B in net assets. Its ten largest holdings made up 33.7% of the fund. Its share classes cost 0.02%–0.33% a year. Over the 12 months to May 2026, it returned 29.0%, with dividends reinvested. In 2026 Q3 it added 113 new positions and exited 127.
The investment objective of iShares Total U.S. Stock Market Index Fund (the Fund), a series of BlackRock Funds SM (the Trust), is to seek to track the investment results of a broad-based index composed of U.S. equities.
The fund tracks the Russell 3000 Index, a float-adjusted market-capitalization-weighted index of approximately 3,000 U.S. publicly traded companies representing roughly 98% of total U.S. market capitalization. BlackRock uses representative sampling to manage the fund, investing in a sample of securities with similar investment characteristics, fundamental characteristics, and liquidity to the index rather than holding all constituents. Because the fund may not hold all index securities, its returns may diverge from those of the Russell 3000 Index.
What you own
| Company | Weight | Value | Shares | Reported price |
|---|---|---|---|---|
NVDANVIDIA Corp | 6.71% | $303.42M | 1.5M | $199.57 |
AAPLApple Inc | 5.62% | $254.05M | 936.3K | $271.35 |
MSFTMicrosoft Corp | 4.35% | $196.53M | 482.0K | $407.78 |
AMZNAmazon.com Inc | 3.65% | $165.14M | 623.0K | $265.06 |
GOOGLAlphabet Inc | 3.21% | $145.04M | 376.9K | $384.80 |
AVGOBroadcom Inc | 2.77% | $125.23M | 300.0K | $417.43 |
GOOGAlphabet Inc | 2.60% | $117.72M | 308.2K | $381.94 |
1.92% | $86.78M | 141.8K | $611.91 | |
TSLATesla Inc | 1.55% | $69.93M | 183.2K | $381.63 |
BlackRock Funds III | 1.36% | $61.55M | — | — |
Reported price is the fund's own reported value divided by its own reported shares at 2026-04-30 — not a live quote, and not what the fund paid.
The 200 largest of 2,669 holdings, with the share counts as filed, open with a free account.
What the fund is made of
Percentages are of fund net assets. Rounding, liabilities and short positions can make totals differ from 100%.
| Stocks | 99.89% |
| Cash & short-term | 1.43% |
| Derivatives | 0.01% |
Look-through blends 1 underlying fund; 0.0% of NAV was not looked through and stays direct-classified.
By sector
- Information Technology
- 32.9%
- Financials
- 12.3%
- Health Care
- 9.2%
- Industrials
- 9.1%
- 11 other sectors
- 36.4%
- Information Technology
- 32.9%
- Financials
- 12.3%
- Health Care
- 9.2%
- Industrials
- 9.1%
- Consumer Discretionary
- 9.1%
- Communication Services
- 8.8%
- Consumer Staples
- 4.3%
- Energy
- 3.4%
- Real Estate
- 2.2%
- International
- 2.2%
- Utilities
- 2.1%
- Materials
- 1.7%
- Cash
- 1.4%
- Other
- 1.2%
- Government
- 0.0%
How it has done
C000159048 share class · total returns with dividends reinvested
Volatility over the last 12 months: 12.80%. Past returns are a record, not a forecast.
Jun 2026 and Jul 2026 have been filed since the trailing figures were struck, so they are not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
This fund changed legal form during the period shown. The history above is continuous — it spans both eras, and the change is not a gap in reporting.
Fees & fund details
iShares Total U.S. Stock Market Index Fund is a U.S. equity index fund that tracks the Russell 3000 Index. 21% of iShares Total U.S. Stock Market Index Fund’s stock holdings are in companies whose revenue grew in the top quartile of U.S. companies over the last five fiscal years (covering 95% of the fund’s equity).
- Asset class
- Equity
- Region
- United States
- Management
- Index (passive)
- Fund type
- Open-end fund
- Expense ratio, by class
- 0.02% – 0.33%
- Portfolio turnover
- 8.00% a year · as of 2025 Q4
Turnover is how much of the portfolio was replaced in a year.
Classified from what the fund holds, not from its name · 2026 Q2. The summary is a paraphrase of the prospectus; the objective is verbatim.
What changed this quarter
Positions that entered or left the fund since its previous filing. Positions that were only resized are not listed.
113 new· the largest 8
127 exited· the largest 8
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