ISHARES MBS ETF
Symbol: MBB
Exchange: NASDAQ
Sector: N/A
Category: Government Mortgage-Backed Bond
Inception date: 13/03/2007
Latest date: 15/10/2026
Current price: $90.59
Expense ratio: 0.04%
Period performance
Adjusted cumulative ETF performance, normalized to the first available adjusted price in the selected period.
Performance metrics
Period total return
-0.31%
Ann. -12.77% (Sharpe / Sortino numerator)
Volatility
6.73%
Sharpe ratio
-2.438
VaR 95%
-0.71%
The performance chart and period total return use a rolling window to the latest adjusted close. For 1M/3M/6M/... periods, default behavior is Yahoo-style rolling (first session on or after "latest date minus N calendar months" through the latest quote). If the calendar is already in a new month, the last quote is near month-end, and there is no current-month data yet, the window switches to N full calendar months ending in that quote month. Sharpe, Sortino, VaR and related metrics still come from the latest batch row. Sharpe/Sortino use annualized excess return versus the US risk-free rate, so a positive chart can still show a negative ratio if annualized return is below cash.
Period total return
-2.34%
Ann. 0.23% (Sharpe / Sortino numerator)
Volatility
5.05%
Sharpe ratio
-0.674
VaR 95%
-0.55%
The performance chart and period total return use a rolling window to the latest adjusted close. For 1M/3M/6M/... periods, default behavior is Yahoo-style rolling (first session on or after "latest date minus N calendar months" through the latest quote). If the calendar is already in a new month, the last quote is near month-end, and there is no current-month data yet, the window switches to N full calendar months ending in that quote month. Sharpe, Sortino, VaR and related metrics still come from the latest batch row. Sharpe/Sortino use annualized excess return versus the US risk-free rate, so a positive chart can still show a negative ratio if annualized return is below cash.
Period total return
-2.79%
Ann. 2.08% (Sharpe / Sortino numerator)
Volatility
4.31%
Sharpe ratio
-0.359
VaR 95%
-0.43%
The performance chart and period total return use a rolling window to the latest adjusted close. For 1M/3M/6M/... periods, default behavior is Yahoo-style rolling (first session on or after "latest date minus N calendar months" through the latest quote). If the calendar is already in a new month, the last quote is near month-end, and there is no current-month data yet, the window switches to N full calendar months ending in that quote month. Sharpe, Sortino, VaR and related metrics still come from the latest batch row. Sharpe/Sortino use annualized excess return versus the US risk-free rate, so a positive chart can still show a negative ratio if annualized return is below cash.
Period total return
-0.99%
Ann. 5.04% (Sharpe / Sortino numerator)
Volatility
5.00%
Sharpe ratio
0.281
VaR 95%
-0.54%
The performance chart and period total return use a rolling window to the latest adjusted close. For 1M/3M/6M/... periods, default behavior is Yahoo-style rolling (first session on or after "latest date minus N calendar months" through the latest quote). If the calendar is already in a new month, the last quote is near month-end, and there is no current-month data yet, the window switches to N full calendar months ending in that quote month. Sharpe, Sortino, VaR and related metrics still come from the latest batch row. Sharpe/Sortino use annualized excess return versus the US risk-free rate, so a positive chart can still show a negative ratio if annualized return is below cash.
Period total return
3.96%
Ann. 5.76% (Sharpe / Sortino numerator)
Volatility
5.50%
Sharpe ratio
0.387
VaR 95%
-0.55%
The performance chart and period total return use a rolling window to the latest adjusted close. For 1M/3M/6M/... periods, default behavior is Yahoo-style rolling (first session on or after "latest date minus N calendar months" through the latest quote). If the calendar is already in a new month, the last quote is near month-end, and there is no current-month data yet, the window switches to N full calendar months ending in that quote month. Sharpe, Sortino, VaR and related metrics still come from the latest batch row. Sharpe/Sortino use annualized excess return versus the US risk-free rate, so a positive chart can still show a negative ratio if annualized return is below cash.
Period total return
16.73%
Ann. 3.95% (Sharpe / Sortino numerator)
Volatility
6.49%
Sharpe ratio
0.050
VaR 95%
-0.70%
The performance chart and period total return use a rolling window to the latest adjusted close. For 1M/3M/6M/... periods, default behavior is Yahoo-style rolling (first session on or after "latest date minus N calendar months" through the latest quote). If the calendar is already in a new month, the last quote is near month-end, and there is no current-month data yet, the window switches to N full calendar months ending in that quote month. Sharpe, Sortino, VaR and related metrics still come from the latest batch row. Sharpe/Sortino use annualized excess return versus the US risk-free rate, so a positive chart can still show a negative ratio if annualized return is below cash.
Daily returns for period 12M
Daily simple returns from the same adjusted closes used by the performance chart: 15/10/2025 - 15/10/2026.
Average daily return
-0.003%
Best day
0.731%
Worst day
-1.006%
Days with data
251
Recent price history (last 90 days)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| 15/10/2026 | $91.01 | $91.01 | $90.50 | $90.59 | 6,965,300 |
| 14/10/2026 | $89.44 | $90.08 | $89.41 | $90.00 | 19,694,900 |
| 13/10/2026 | $89.88 | $89.99 | $89.79 | $89.97 | 3,919,300 |
| 12/10/2026 | $89.68 | $89.83 | $89.68 | $89.83 | 1,901,900 |
| 09/10/2026 | $89.55 | $89.79 | $89.40 | $89.79 | 3,817,700 |
| 08/10/2026 | $89.08 | $89.73 | $88.99 | $89.73 | 5,388,500 |
| 07/10/2026 | $88.58 | $89.39 | $88.58 | $89.22 | 4,982,500 |
| 06/10/2026 | $89.16 | $89.44 | $89.10 | $89.36 | 7,087,500 |
| 05/10/2026 | $89.11 | $89.28 | $88.84 | $89.09 | 5,079,800 |
| 02/10/2026 | $89.82 | $89.87 | $89.17 | $89.22 | 4,647,300 |