iShares Total U.S. Stock Market Index Fund
BlackRock Funds
Fund classification
Classified from what the fund holds · as of 2026 Q2
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
Fund profile
As filed in the prospectus · 2025 Q4
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.
| Share class | Expense ratio |
|---|---|
| C000159048 | 0.33% |
| C000159049 | 0.06% |
| C000159050 | 0.02% |
Portfolio turnover 8.00% · as of 2025 Q4
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q2
| 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.
Sector allocation
The same holdings as Allocation above, grouped by market sector instead of asset type · as of 2026 Q2
| Information Technology | 31.4% |
| Financials | 11.9% |
| Communication Services | 10.0% |
| Consumer Discretionary | 9.6% |
| 11 smaller | 37.0% |
Government, Securitized and Cash are non-corporate buckets; International is foreign holdings we don’t sector-classify, and Other is the residual (held funds, unresolved names).
Portfolio growth profile
How much of the fund’s stock holdings are in fast-growing companies · as of 2026 Q2
Share of the fund’s equity (by value) in companies whose trailing five-year revenue — or net-income — growth ranks in the top 25% of U.S. public companies. Foreign and newly-listed holdings are excluded, so the figure covers only part of the book. From SEC filings — not investment advice. How we measure this.
Latest quarter
What changed since the fund's previous filing
Return profile
Total return as filed — price change plus distributions reinvested · trailing figures to Apr 2026
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.
Holdings
By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page
| Ticker | Issuer | %NAV | Reported price | Value | Shares |
|---|---|---|---|---|---|
| NVDA | NVIDIA CorpNVDA | 6.71% | $199.57 | $303.42M | 1.5M |
| AAPL | Apple IncAAPL | 5.62% | $271.35 | $254.05M | 936.3K |
| MSFT | Microsoft CorpMSFT | 4.35% | $407.78 | $196.53M | 482.0K |
| AMZN | Amazon.com IncAMZN | 3.65% | $265.06 | $165.14M | 623.0K |
| GOOGL | Alphabet IncGOOGL | 3.21% | $384.80 | $145.04M | 376.9K |
| AVGO | Broadcom IncAVGO | 2.77% | $417.43 | $125.23M | 300.0K |
| GOOG | Alphabet IncGOOG | 2.60% | $381.94 | $117.72M | 308.2K |
| META | Meta Platforms IncMETA | 1.92% | $611.91 | $86.78M | 141.8K |
| TSLA | Tesla IncTSLA | 1.55% | $381.63 | $69.93M | 183.2K |
| — | 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.
Top 10 positions are 33.73% of net assets, top 25 46.04%, across 2.6K issuers.
See more of this fund's book
More positions with filed share counts, and the quarter-over-quarter change list rather than the largest few — free with an account, no card required.
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