iShares MBS ETF (MBB) Holdings $93.72 +0.65 (+0.70%) Closing price 08/1/2025 04:00 PM EasternExtended Trading$93.48 -0.25 (-0.26%) As of 08/1/2025 07:42 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Holdings Stock AnalysisChartDividendHeadlinesHoldingsOptions ChainOwnershipShort InterestTrendsBuy This Stock Top 25 MBB HoldingsRankCompanyCurrent PriceWeightShares Held1BLACKROCK CASH CL INST SL AGENCYN/A3.98%1,549,874,1522FHLMC 30YR UMBS SUPER - 2.0 2051-05-01N/A0.86%424,068,2823GNMA2 30YR - 2.0 2051-10-20N/A0.57%275,271,7984GNMA2 30YR - 2.0 2051-12-20N/A0.56%270,469,1115FNMA 30YR UMBS - 2.0 2051-12-01N/A0.54%265,281,3806FHLMC 30YR UMBS SUPER - 2.0 2051-04-01N/A0.52%254,737,6867UMBS 30YR TBA(REG A) - 5.5 2025-07-14N/A0.50%195,729,0008GNMA2 30YR - 2.5 2051-07-20N/A0.48%222,174,5819FNMA 30YR UMBS - 2.0 2051-11-01N/A0.45%224,890,21810FNMA 30YR UMBS SUPER - 2.0 2051-07-01N/A0.45%222,319,064 Get the Latest News and Ratings for MBB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for iShares MBS ETF and its competitors with MarketBeat's FREE daily newsletter. 11GNMA2 30YR - 5.0 2054-11-20N/A0.41%164,616,49012GNMA2 30YR TBA(REG C) - 6.0 2025-07-21N/A0.41%156,750,00013FNMA 30YR UMBS - 3.0 2051-10-01N/A0.38%172,710,88514GNMA2 30YR - 2.0 2052-03-20N/A0.38%184,264,93615GNMA2 30YR - 2.5 2051-05-20N/A0.37%172,695,22916UMBS 30YR TBA(REG A) - 6.0 2025-07-14N/A0.37%139,950,00017GNMA2 30YR - 2.5 2052-04-20N/A0.36%164,791,75218GNMA2 30YR TBA(REG C) - 5.0 2025-07-21N/A0.36%143,587,00019FHLMC 30YR UMBS SUPER - 2.0 2052-03-01N/A0.35%174,209,08620FNMA 30YR UMBS - 2.0 2051-03-01N/A0.34%165,831,90621FNMA 30YR UMBS SUPER - 2.0 2052-04-01N/A0.34%165,868,74022GNMA2 30YR - 6.5 2054-07-20N/A0.34%128,787,67223UMBS 30YR TBA(REG A) - 5.0 2025-07-14N/A0.34%136,472,00024FNMA 30YR UMBS - 2.0 2051-10-01N/A0.32%159,263,54125GNMA2 30YR - 2.0 2052-01-20N/A0.32%155,981,515 Geographic ExposureUnited States97.0%Currency ExposureUSD100.0%Sector ExposureFinancials91.8%Industry ExposureThrifts & Mortgage Finance91.4%Diversified Financial Services0.4%SubIndustry ExposureThrifts & Mortgage Finance91.8%Coupon Exposure2-459.1%4-631.9%6-812.0%Maturity Exposure20-3080.8%10-158.1%0-13.8%30+3.1%15-202.4%5-101.2%3-50.1% Related Companies and Tools Related Companies Vanguard Mortgage-Backed Securities ETF Holdings First Trust Low Duration Opportunities ETF Holdings iShares GNMA Bond ETF Holdings This page (NASDAQ:MBB) was last updated on 8/2/2025 by MarketBeat.com Staff From Our Partners379 passengers walked away from thisWhy Elon Musk Just Invested $51 Million Into Brand New “Miracle Metal” Developed by MIT ScientistsTrue Market Insiders | SponsoredI warned you about Nvidia… now look what’s happeningNvidia just got Trump’s greenlight to sell high-powered AI chips to China — and their stock surged 5% before t...Timothy Sykes | Sponsored$100 Trillion “AI Metal” Found in American Ghost TownJeff Brown recently traveled to a ghost town in the middle of an American desert… To investigate what could...Brownstone Research | SponsoredOne stock to replace NvidiaInvesting Legend Hints the End May be Near for These 3 Iconic Stocks One company to replace Amazon… another...InvestorPlace | SponsoredMarket Crash Warning: How to Protect Your Wealth Before August 12thChina tariffs hit August 12—and experts warn a market meltdown may follow. 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