iShares MBS ETF (MBB) Holdings $95.85 -0.20 (-0.21%) Closing price 04:00 PM EasternExtended Trading$95.28 -0.56 (-0.59%) As of 07:43 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/A5.01%2,118,180,2242FHLMC 30YR UMBS SUPER - 2.0 2051-05-01N/A0.99%510,213,5733GNMA2 30YR TBA(REG C) - 6.0 2025-10-20N/A0.89%367,925,0004GNMA2 30YR TBA(REG C) - 5.5 2025-10-20N/A0.78%327,933,0005GNMA2 30YR - 2.0 2051-10-20N/A0.53%268,456,3946GNMA2 30YR - 2.0 2051-12-20N/A0.52%263,678,7617FNMA 30YR UMBS - 2.0 2051-12-01N/A0.50%260,536,2848FHLMC 30YR UMBS SUPER - 2.0 2051-04-01N/A0.48%250,078,5469GNMA2 30YR - 2.5 2051-07-20N/A0.44%216,721,38710FNMA 30YR UMBS - 2.0 2051-11-01N/A0.43%221,094,695 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. 11FNMA 30YR UMBS SUPER - 2.0 2051-07-01N/A0.42%218,051,49612GNMA2 30YR - 5.0 2054-11-20N/A0.41%173,822,01513GNMA2 30YR TBA(REG C) - 6.5 2025-10-20N/A0.40%163,868,49314FNMA 30YR UMBS - 3.0 2051-10-01N/A0.35%169,004,61315GNMA2 30YR - 2.0 2052-03-20N/A0.35%179,942,45916GNMA2 30YR - 2.5 2051-05-20N/A0.35%168,569,67317FHLMC 30YR UMBS SUPER - 2.0 2052-03-01N/A0.33%171,019,49518GNMA2 30YR - 2.5 2052-04-20N/A0.33%160,462,05119GNMA2 30YR - 5.5 2053-09-20N/A0.33%139,331,88420UMBS 30YR TBA(REG A) - 6.0 2025-11-13N/A0.33%137,675,00021FNMA 30YR UMBS - 2.0 2051-03-01N/A0.31%162,759,30222FNMA 30YR UMBS SUPER - 2.0 2052-04-01N/A0.31%162,786,55223FNMA 30YR UMBS - 2.0 2051-10-01N/A0.30%156,331,40224GNMA2 30YR - 2.0 2052-01-20N/A0.30%152,334,41725GNMA2 30YR - 5.5 2054-10-20N/A0.29%122,696,894 Geographic ExposureUnited States95.4%Currency ExposureUSD100.0%Sector ExposureFinancials87.4%Industry ExposureThrifts & Mortgage Finance87.3%Diversified Financial Services0.1%SubIndustry ExposureThrifts & Mortgage Finance87.4%Coupon Exposure2-462.3%4-626.9%6-812.4%Maturity Exposure20-3079.6%10-157.7%30+4.1%0-13.8%15-202.4%5-101.1%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 10/23/2025 by MarketBeat.com Staff From Our PartnersBuy alert: Move $1,000 before Tesla’s Optimus launchElon's $1,000,000,000,000 payday Elon Musk just made his biggest insider purchase of Tesla stock ever. 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