iShares MBS ETF (MBB) Holdings $94.08 +0.58 (+0.62%) Closing price 08/22/2025 04:00 PM EasternExtended Trading$92.98 -1.10 (-1.17%) As of 08/22/2025 07:48 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/A4.15%1,668,672,6342FHLMC 30YR UMBS SUPER - 2.0 2051-05-01N/A1.02%516,484,4963GNMA2 30YR TBA(REG C) - 6.0 2025-08-20N/A0.59%231,750,0004GNMA2 30YR - 2.0 2051-10-20N/A0.55%272,952,2985GNMA2 30YR - 2.0 2051-12-20N/A0.54%268,065,9716FNMA 30YR UMBS - 2.0 2051-12-01N/A0.52%263,645,0047FHLMC 30YR UMBS SUPER - 2.0 2051-04-01N/A0.50%253,156,4378GNMA2 30YR - 2.5 2051-07-20N/A0.46%220,284,2159FNMA 30YR UMBS - 2.0 2051-11-01N/A0.44%223,540,91310FNMA 30YR UMBS SUPER - 2.0 2051-07-01N/A0.44%221,002,144 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 TBA(REG C) - 6.5 2025-08-20N/A0.42%163,868,49312GNMA2 30YR - 5.0 2054-11-20N/A0.40%163,215,51013UMBS 30YR TBA(REG A) - 6.5 2025-09-15N/A0.38%148,925,00014FNMA 30YR UMBS - 3.0 2051-10-01N/A0.37%170,421,56015GNMA2 30YR - 2.0 2052-03-20N/A0.37%182,716,69316GNMA2 30YR - 2.5 2051-05-20N/A0.36%171,222,26917GNMA2 30YR - 5.5 2053-09-20N/A0.36%143,484,48718GNMA2 30YR TBA(REG C) - 5.0 2025-08-20N/A0.35%143,587,00019FHLMC 30YR UMBS SUPER - 2.0 2052-03-01N/A0.34%173,139,74620GNMA2 30YR - 2.5 2052-04-20N/A0.34%163,265,24021FNMA 30YR UMBS - 2.0 2051-03-01N/A0.33%164,791,13822FNMA 30YR UMBS SUPER - 2.0 2052-04-01N/A0.33%164,758,41023GNMA2 30YR - 6.5 2054-07-20N/A0.32%123,260,04024GNMA2 30YR TBA(REG C) - 5.5 2025-08-20N/A0.32%129,433,00025GNMA2 30YR - 2.0 2052-01-20N/A0.31%154,755,518 Geographic ExposureUnited States95.7%Currency ExposureUSD100.0%Sector ExposureFinancials90.0%Industry ExposureThrifts & Mortgage Finance89.9%Diversified Financial Services0.1%SubIndustry ExposureThrifts & Mortgage Finance90.0%Coupon Exposure2-458.5%4-631.1%6-811.9%Maturity Exposure20-3080.0%10-158.0%0-13.7%30+3.3%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 8/24/2025 by MarketBeat.com Staff From Our PartnersIs This Stock the 'Next Nvidia'?'AI Bottleneck' Now Threatens Entire Magnificent 7 A new critical failure has appeared in the AI market, an...Altimetry | Sponsored“Sell Nvidia before earnings”Eric Fry just went live with one of his most controversial calls yet: “Sell Nvidia.” While Wall Street has bee...InvestorPlace | SponsoredTrump’s “new dollar” could shock Americans"I Made Millions in the Tech Boom. 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