iShares MBS ETF
1D
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1M
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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
CategoryIntermediate Government
CategoryIntermediate Government
Number of holdings11,400
Number of holdings11,400
Inception DateMar 13, 2007
Inception DateMar 13, 2007
What's in this fund
Sectors
As of October 14, 2025Securitized Bonds95.81%
Cash and Equivalents4.19%
Top 10 Holdings (9.87% of total assets)
As of October 14, 2025NameSymbol% Assets
BlackRock Cash Funds Instl SL Agency—4.31%
Federal Home Loan Mortgage Corp. 2%—0.99%
Government National Mortgage Association 6%—0.88%
Government National Mortgage Association 5.5%—0.78%
Government National Mortgage Association 2%—0.53%
Government National Mortgage Association 2%—0.52%
Federal National Mortgage Association 2%—0.50%
Federal Home Loan Mortgage Corp. 2%—0.49%
Government National Mortgage Association 2.5%—0.44%
Federal National Mortgage Association 2%—0.43%
MBB Key Statistics
AUM42.61B
AUM42.61B
Price-Earnings ratio—
Price-Earnings ratio—
30-Day yield4.16
30-Day yield4.16
Average volume3.89M
Average volume3.89M
High today$95.89
High today$95.89
Low today$95.69
Low today$95.69
Open price$95.87
Open price$95.87
Volume4.59M
Volume4.59M
52 Week high$95.97
52 Week high$95.97
52 Week low$90.28
52 Week low$90.28
Expense ratio0.04
Expense ratio0.04
MBB News
The Motley Fool 2d
Optas Capital Sells $3.5 Million Stake in iShares MBS ETFOn Wednesday, Texas-based Optas Capital disclosed the sale of 37,650 shares of the iShares MBS ETF for an estimated $3.5 million during the third quarter. What...
