iShares Total U.S. Stock Market Index Fund
Data updated: 2026-09-25
C000159049 — iShares Total U.S. Stock Market Index Fund. United States Large Cap Blend / Core Equity. Holdings, fees, performance and SEC filings.
C000159049 Fund Overview
iShares Total U.S. Stock Market Index Fund is a US mutual fund managed by Blackrock Funds, categorised as United States Large Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Blackrock Funds
- Category: United States Large Cap Blend / Core Equity
- Assets under management: $4.75B
- 1-year return: 31.0%
- SEC CIK: 0000844779
- SEC series ID: S000050372
- Share class ID: C000159049
C000159049 Investment Objective and Strategy
iShares Total U.S. Stock Market Index Fund describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Blackrock Funds.
Investment objective
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.
Principal investment strategy
The Fund seeks to track the investment results of the Russell 3000 Index (the Underlying Index), which measures the performance of the broad U.S. equity market. As of October 31, 2018, the Underlying Index included issuers representing approximately 98% of the total market capitalization of all publicly-traded U.S.-domiciled equity securities. The Underlying Index is a float-adjusted capitalization-weighted index of the largest public issuers domiciled in the United States and its territories. Total market capitalization reflects all equity shares outstanding, while total market value reflects float-adjusted capitalizations based on equity shares available for general investment. The Underlying Index may include large-, mid- or small-capitalization companies, and components primarily include technology, financial services and consumer discretionary companies.
The components of the Underlying Index, and the degree to which these components represent certain industries, may change over time. BlackRock uses a representative sampling indexing strategy to manage the Fund. Representative sampling is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to that of the Underlying Index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the Underlying Index. The Fund may or may not hold all of the securities in the Underlying Index. The Fund generally invests at least 90% of its assets, plus the amount of any borrowing for investment purposes, in securities of the Underlying Index.
C000159049 Holdings
Top 10 holdings of iShares Total U.S. Stock Market Index Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| NVIDIA Corp | 6.38% |
| Apple Inc | 6.09% |
| Microsoft Corp | 4.71% |
| Amazon.com Inc | 3.59% |
| Alphabet Inc | 2.82% |
| Broadcom Inc | 2.47% |
| Alphabet Inc | 2.32% |
| Meta Platforms Inc | 1.67% |
| Berkshire Hathaway Inc | 1.30% |
| JPMorgan Chase & Co | 1.28% |
C000159049 Portfolio Allocation
Asset-class allocation of iShares Total U.S. Stock Market Index Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.4% |
| Cash & Equivalents | 1.4% |
C000159049 Performance
Total returns for C000159049 (as of 2026-10-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 5.8% |
| 1 year | 31.0% |
| 3 years (annualised) | 21.3% |
| 5 years (annualised) | 11.9% |
C000159049 Risk Information
Risk metrics for C000159049, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 13.2%
C000159049 Costs and Fees
C000159049 costs about $6 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.06%
- Gross expense ratio: 0.06%
- Portfolio turnover: 8%
- Brokerage commissions: 0.13 bps of average net assets (SEC N-CEN)
C000159049 Cashflows
Over the 12 months to 2026-04, iShares Total U.S. Stock Market Index Fund had net outflows of $201.28M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-04 | −$119.35K |
| 2026-03 | $32.13M |
| 2026-02 | $7.82M |
| 2026-01 | −$190.79M |
| 2025-12 | $6.93M |
| 2025-11 | −$12.34M |
C000159049 Debt Constituents
No individual debt constituents are reported in iShares Total U.S. Stock Market Index Fund's latest SEC N-PORT filing.
C000159049 Prospectus and SEC Filings
Official iShares Total U.S. Stock Market Index Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2025-11-21
- Prospectus (485BPOS) — filed 2024-11-22
- Prospectus (485BPOS) — filed 2023-11-20
- Portfolio holdings (N-PORT) — filed 2026-09-25
- Portfolio holdings (N-PORT) — filed 2026-06-25
- Portfolio holdings (N-PORT) — filed 2026-03-26
- Annual census (N-CEN) — filed 2025-10-14
- Annual census (N-CEN) — filed 2024-10-11
Related Funds
Other United States Large Cap Blend / Core Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.