iShares Mbs ETF (MBB) closed at $92.05 on October 30, 2026, up 0.4% from the previous close, on volume of 2,870,324 shares (30-day average 8,090,544).
Data as of October 30, 2026.
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The iShares Barclays MBS Bond Fund seeks investment results that correspond generally to the price and yield performance before fees and expenses of the investment grade agency mortgage-backed securities sector of the United States as defined by the Bloomberg U.S. MBS Index.
iShares Mbs ETF trades on the NASDAQ stock market under the symbol MBB.
As of October 30, 2026, MBB stock price climbed to $92.05 with 2,870,324 million shares trading.
MBB has a beta of 0.09, meaning it tends to be less sensitive to market movements. MBB has a correlation of 0.07 to the broad based SPY ETF.
MBB has a market cap of $35.84 billion. This is considered a Large Cap stock.
In the last 3 years, MBB traded as high as $96.97 and as low as $86.17.
MBB has underperformed the market in the last year with a return of +0.6%, while the SPY ETF gained +11.0%. In the last 3 month period, MBB fell short of the market, returning -0.1%, while SPY returned +3.9%. However, in the most recent 2 weeks MBB has outperformed the stock market by returning +1.6%, while SPY returned -2.1%.
MBB support price is $91.29 and resistance is $92.07 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that MBB shares will trade within this expected range on the day.
