iShares MBS ETF
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Why Robinhood?
Robinhood gives you the tools you need to put your money in motion. You can buy or sell MBB and other ETFs, options, and stocks.About MBB
MBB tracks a market-weighted index of investment-grade mortgage pass-through securities. The index includes fixed and floating rate securities issued by GNMA, FNMA and FHLMC.
Index-TrackedBBgBarc US Universal TR USD
Index-TrackedBBgBarc US Universal TR USD
CategoryGovernment Mortgage-Backed Bond
CategoryGovernment Mortgage-Backed Bond
Number of holdings11,165
Number of holdings11,165
Inception DateMar 13, 2007
Inception DateMar 13, 2007
What's in this fund
Sectors
As of December 19, 2025Securitized Bonds96.62%
Cash and Equivalents3.38%
Top 10 Holdings (9.16% of total assets)
As of December 19, 2025NameSymbol% Assets
BlackRock Cash Funds Instl SL Agency—3.46%
Federal Home Loan Mortgage Corp. 2%—1.06%
Government National Mortgage Association 5.5%—1.00%
Government National Mortgage Association 2%—0.56%
Government National Mortgage Association 2%—0.56%
Federal Home Loan Mortgage Corp. 2%—0.54%
Government National Mortgage Association 5%—0.52%
Federal Home Loan Mortgage Corp. 2%—0.52%
Government National Mortgage Association 2.5%—0.47%
Government National Mortgage Association 6%—0.47%
MBB Key Statistics
AUM38.99B
AUM38.99B
Price-Earnings ratio—
Price-Earnings ratio—
30-Day yield4.12
30-Day yield4.12
Average volume2.27M
Average volume2.27M
High today$95.12
High today$95.12
Low today$95.03
Low today$95.03
Open price$95.10
Open price$95.10
Volume1.65M
Volume1.65M
52 Week high$96.25
52 Week high$96.25
52 Week low$90.28
52 Week low$90.28
Expense ratio0.04
Expense ratio0.04
Stock Snapshot
The current iShares MBS ETF(MBB) stock price is $95.08, with a market capitalization of 38.96B. It offers a dividend yield of 2.6%.
As of 2025-12-23, iShares MBS ETF(MBB) stock has fluctuated between $95.03 and $95.12. The current price stands at $95.08, placing the stock +0.1% above today's low and -0.0% off the high.
iShares MBS ETF(MBB) shares are trading with a volume of 1.65M, against a daily average of 2.27M.
In the last year, iShares MBS ETF(MBB) shares hit a 52-week high of $96.25 and a 52-week low of $90.28.
In the last year, iShares MBS ETF(MBB) shares hit a 52-week high of $96.25 and a 52-week low of $90.28.