ETF · real data, updated daily
MBB · iShares MBS ETF
Over the last 15 years (2011-10 to 2026-10), $10,000 invested in MBB with dividends reinvested grew to $12,505, 1.49% a year, with a worst peak-to-trough fall of -16.77%. Past performance doesn't predict future results.
Growth of $10,000 · 2011-10 to 2026-10 · dividends reinvested
How MBB held up in past market crashes
MBB has been through 4 of the market crashes since 2000 in our data. Its deepest price fall was 15.5% in the 2022 bear market, when the S&P 500 fell 25.4%. Its price had not yet regained that high by the latest close (price only, not counting the dividends or interest it paid). No fund is safe from losses; past falls do not predict future ones.
| Crash | MBB deepest fall | S&P 500 (SPY) | Peak to bottom | Back to peak |
|---|---|---|---|---|
| 2008 financial crisis | -4.5% | -56.5% | Jan 2008 to Oct 2008 | 1 months |
| 2018 fourth-quarter selloff | -1.5% | -20.2% | Sep 2018 to Nov 2018 | 1 months |
| 2020 COVID crash | -4.3% | -34.1% | Mar 2020 to Mar 2020 | Under a month |
| 2022 bear market | -15.5% | -25.4% | Jan 2022 to Sep 2022 | Not yet |
Price declines in the fund's listing currency, dividends not included, inside each crash's S&P 500 peak-to-bottom window. See how 50 popular ETFs compare in the crash study.
About MBB
iShares MBS ETF is a fixed income exchange-traded fund that seeks to track the Bloomberg U.S. MBS Index by investing in investment-grade mortgage-backed pass-through securities issued or guaranteed by U.S. government agencies.
Fund description from our market-data provider.
Put MBB to the test
Every tool below opens prefilled with MBB: free, no account needed.
Backtest MBB →
Full history, any date range, benchmarks, drawdowns, rolling returns.
Would MBB survive 2008? →
What actually happened to it in the crisis: real drawdown and recovery.
Project it forward →
Monte Carlo simulation of where it could go from here.
Compare MBB vs VTI →
Side by side with the total US market: returns, drawdowns and volatility over their shared history.
Replay $100/mo into MBB →
Animated growth of steady monthly contributions.
Fundamentals →
Holdings-level financials where available.
Educational use only, not investment advice. Results are hypothetical.Read full disclaimer
This tool is for educational and informational purposes only and does not provide financial, investment, tax, legal, or accounting advice. Results are hypothetical and based on historical data and assumptions that may be inaccurate. Past performance does not guarantee future results. Consult a licensed professional before making investment decisions.