- Issuer
- iShares
- Inception Date
- Aug 13, 2015
- Region
- North America (U.S.)
- Category
- Large Cap Blend Equities
- Index Tracked
- Russell 3000 Index
- Domicile
- United States
- Distribution Policy
- Distributing
- Asset Class
- Equity
- Asset Class Size
- Large-Cap
- Asset Class Style
- Blend
Share Price Chart
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Performance
BASMX Performance Chart
iShares Total U.S. Stock Market Index Fund Investor A Shares (BASMX) is up 10.3% since the beginning of the year. BASMX is currently trading at $34 per share. Investors who bought $1,000 worth of BASMX shares 5 years ago would now be looking at an investment worth $1,812.
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Returns By Period
iShares Total U.S. Stock Market Index Fund Investor A Shares (BASMX) has returned 10.27% so far this year and 26.74% over the past 12 months. Looking at the last ten years, BASMX has achieved an annualized return of 14.73%, outperforming the S&P 500 Index benchmark, which averaged 13.88% per year.
iShares Total U.S. Stock Market Index Fund Investor A Shares
- 1D
- 1.13%
- 1M
- 0.77%
- YTD
- 10.27%
- 6M
- 9.49%
- 1Y
- 26.74%
- 3Y*
- 20.24%
- 5Y*
- 12.62%
- 10Y*
- 14.73%
Benchmark (S&P 500 Index)
- 1D
- -0.37%
- 1M
- -0.01%
- YTD
- 9.16%
- 6M
- 8.64%
- 1Y
- 25.22%
- 3Y*
- 19.78%
- 5Y*
- 11.99%
- 10Y*
- 13.88%
BASMX Monthly Returns History
Based on dividend-adjusted daily data since Jan 4, 2016, BASMX's average daily return is +0.06%, while the average monthly return is +1.24%. At this rate, an investment would double in approximately 4.7 years.
Historically, 70% of months were positive and 30% were negative. The best month was Apr 2020 with a return of +13.0%, while the worst month was Mar 2020 at -13.8%. The longest winning streak lasted 15 consecutive months, and the longest losing streak was 3 months.
On a daily basis, BASMX closed higher 53% of trading days. The best single day was Apr 9, 2025 with a return of +9.6%, while the worst single day was Mar 16, 2020 at -12.3%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1.55% | -0.51% | -5.01% | 10.19% | 5.04% | -0.73% | 10.27% | ||||||
| 2025 | 3.13% | -1.92% | -5.86% | -0.70% | 6.33% | 5.06% | 2.16% | 2.29% | 3.40% | 2.13% | 0.26% | -0.06% | 16.81% |
| 2024 | 1.09% | 5.37% | 3.21% | -4.45% | 4.70% | 3.07% | 1.89% | 2.14% | 2.06% | -0.74% | 6.61% | -3.11% | 23.46% |
| 2023 | 6.84% | -2.33% | 2.66% | 1.04% | 0.37% | 6.79% | 3.55% | -1.94% | -4.78% | -2.65% | 9.30% | 5.27% | 25.63% |
| 2022 | -5.90% | -2.54% | 3.19% | -8.98% | -0.05% | -8.39% | 9.40% | -3.73% | -9.32% | 8.25% | 5.13% | -5.87% | -19.32% |
| 2021 | -0.45% | 3.07% | 3.58% | 5.11% | 0.45% | 2.48% | 1.64% | 2.82% | -4.51% | 6.68% | -1.55% | 3.92% | 25.26% |
Benchmark Metrics
iShares Total U.S. Stock Market Index Fund Investor A Shares has an annualized alpha of 1.08%, beta of 1.01, and R2 of 0.98 versus S&P 500 Index. Calculated based on daily prices since January 04, 2016.
- This fund captured 104.46% of S&P 500 Index gains but only 99.13% of its losses - a favorable profile for investors.
- With beta of 1.01 and R2 of 0.98, this fund moves broadly in line with S&P 500 Index - much of its variation is explained by market exposure rather than independent behavior.
- Alpha
- 1.08%
- Beta
- 1.01
- R²
- 0.98
- Upside Capture
- 104.46%
- Downside Capture
- 99.13%
Expense Ratio
BASMX has an expense ratio of 0.33%, placing it in the medium range.
Return for Risk
Risk / Return Rank
BASMX ranks 62 for risk / return — better than 62% of mutual funds on our site. You're getting solid returns for the risk taken. A good sign, especially for investors who want growth without excessive volatility.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for iShares Total U.S. Stock Market Index Fund Investor A Shares (BASMX) and compare them to S&P 500 Index.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| BASMX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.06 | ||
| Sortino ratioReturn per unit of downside risk | +0.08 | ||
| Omega ratioGain probability vs. loss probability | 1.37 | 1.37 | +0.01 |
| Calmar ratioReturn relative to maximum drawdown | 2.98 | 2.78 | +0.20 |
| Martin ratioReturn relative to average drawdown | 13.29 | 12.44 | +0.85 |
Dividends
Dividend History
iShares Total U.S. Stock Market Index Fund Investor A Shares provided a 0.79% dividend yield over the last twelve months, with an annual payout of $0.27 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $0.27 | $0.27 | $0.27 | $0.26 | $0.24 | $0.30 | $0.22 | $0.29 | $0.26 | $0.25 | $0.15 |
Dividend yield | 0.79% | 0.86% | 0.99% | 1.19% | 1.33% | 1.33% | 1.20% | 1.90% | 2.18% | 1.93% | 1.37% |
Monthly Dividends
The table displays the monthly dividend distributions for iShares Total U.S. Stock Market Index Fund Investor A Shares. The dividends shown in the table have been adjusted to account for any splits that may have occurred.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | $0.00 | $0.00 | $0.00 | $0.06 | $0.00 | $0.00 | $0.06 | ||||||
| 2025 | $0.00 | $0.00 | $0.00 | $0.06 | $0.00 | $0.00 | $0.07 | $0.00 | $0.00 | $0.07 | $0.00 | $0.07 | $0.27 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.05 | $0.00 | $0.00 | $0.06 | $0.00 | $0.00 | $0.07 | $0.00 | $0.09 | $0.27 |
| 2023 | $0.00 | $0.00 | $0.00 | $0.06 | $0.00 | $0.00 | $0.06 | $0.00 | $0.00 | $0.06 | $0.00 | $0.09 | $0.26 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.05 | $0.00 | $0.00 | $0.06 | $0.00 | $0.00 | $0.06 | $0.00 | $0.08 | $0.24 |
| 2021 | $0.00 | $0.00 | $0.00 | $0.03 | $0.00 | $0.00 | $0.04 | $0.00 | $0.00 | $0.05 | $0.00 | $0.17 | $0.30 |
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the iShares Total U.S. Stock Market Index Fund Investor A Shares. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the iShares Total U.S. Stock Market Index Fund Investor A Shares was 34.95%, occurring on Mar 23, 2020. Recovery took 99 trading sessions.
The current iShares Total U.S. Stock Market Index Fund Investor A Shares drawdown is 1.19%.
Related event | Drawdown | Fall | Recovery | Underwater |
|---|---|---|---|---|
COVID crash2020 | -34.95%Mar 2020 | 1mo 2d | 4mo 22d | 5mo 24dFeb 2020 - Aug 2020 |
Bear market2022 | -25.12%Sep 2022 | 8mo 29d | 1y 2mo | 1y 11moJan 2022 - Dec 2023 |
Rate-hike selloffLate 2018 | -20.24%Dec 2018 | 3mo 4d | 4mo | 7mo 4dSep 2018 - Apr 2019 |
2025 selloff2025 | -19.32%Apr 2025 | 1mo 17d | 2mo 20d | 4mo 7dFeb 2025 - Jun 2025 |
2016 pullback2016 | -9.92%Feb 2016 | 1mo 6d | 29d | 2mo 5dJan 2016 - Mar 2016 |
Drawdown Indicators
| BASMX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -34.95% | -56.78% | +21.83% |
Max Drawdown (1Y)Largest decline over 1 year | -8.92% | -9.10% | +0.18% |
Max Drawdown (3Y)Largest decline over 3 years | -19.32% | -18.90% | -0.42% |
Max Drawdown (5Y)Largest decline over 5 years | -25.12% | -25.43% | +0.31% |
Max Drawdown (10Y)Largest decline over 10 years | -34.95% | -33.92% | -1.03% |
Current DrawdownCurrent decline from peak | -1.19% | -1.80% | +0.61% |
Average DrawdownAverage peak-to-trough decline | -4.58% | -10.71% | +6.13% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.00% | 2.03% | -0.03% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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