iShares Biotechnology ETF (IBB) Holdings $142.72 -0.91 (-0.63%) Closing price 09/19/2025 04:00 PM EasternExtended Trading$143.23 +0.51 (+0.36%) As of 09/19/2025 07:59 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 ChainOwnershipRatingsSEC FilingsShort InterestTrendsBuy This Stock Top 25 IBB HoldingsRankCompanyCurrent PriceWeightShares Held1GILDGilead Sciences$114.09+0.4%7.20%3,593,8122AMGNAmgen$285.41+3.5%6.68%1,372,7763VRTXVertex Pharmaceuticals$383.12-1.0%6.22%894,9354REGNRegeneron Pharmaceuticals$591.99-1.1%6.21%629,2815ALNYAlnylam Pharmaceuticals$453.56+0.3%6.19%753,9036IQVIQVIA$187.29-1.5%3.42%1,037,0757INSMInsmed$144.76-0.8%3.21%1,250,0048ARGXargenex$736.76+0.7%3.10%232,7749MTDMettler-Toledo International$1,264.84-1.7%2.78%125,12010NTRANatera$181.11+0.7%2.32%781,79511BIIBBiogen$142.50-0.9%2.26%884,53412ONCBeOne Medicines$334.40-2.5%1.93%337,34213UTHRUnited Therapeutics$417.57+1.9%1.90%265,98614WATWaters$301.43-1.6%1.87%359,09515INCYIncyte$86.53+0.6%1.69%1,153,43316ILMNIllumina$102.75-0.3%1.56%929,48417BNTXBioNTech$96.22-0.1%1.54%905,52118NBIXNeurocrine Biosciences$145.23-0.3%1.44%577,29519MEDPMedpace$498.60-0.7%1.22%141,00620GMABGenmab A/S$28.28+0.9%1.20%2,453,04121EXELExelixis$40.10-0.9%1.10%1,596,13422BMRNBioMarin Pharmaceutical$54.36-1.4%1.09%1,143,24323IONSIonis Pharmaceuticals$61.01-1.2%1.04%938,95324HALOHalozyme Therapeutics$77.81+1.5%1.00%736,90525MDGLMadrigal Pharmaceuticals$439.93-0.2%0.92%121,442 Geographic ExposureUnited States96.0%Netherlands0.7%Bermuda0.7%Canada0.6%Switzerland0.6%Ireland0.5%Virgin Islands, British0.1%Italy0.1%Jersey0.1%Cayman Islands0.1%Singapore0.1%Luxembourg0.1%Israel0.1%Currency ExposureUSD100.0%Sector ExposureHealth Care99.1%Consumer Discretionary0.3%Biotechnology0.1%Life Sciences Tools & Services0.1%Industrials0.1%Energy0.1%Industry ExposureBiotechnology79.6%Health Care Equipment & Supplies8.5%Health Care Providers & Services6.7%Pharmaceuticals1.8%Life Sciences Tools & Services1.4%Diversified Consumer Services1.3%Distributors0.3%Commercial Services & Supplies0.1%Renewable Energy0.1%Chemicals0.1%SubIndustry ExposureBiotechnology75.7%Life Sciences Tools & Services10.9%Health Care Services6.7%Pharmaceuticals2.7%Health Care Equipment0.4%Renewable Energy Equipment0.1%Coupon Exposure0-299.8%4-60.2% Related Companies and Tools Related Companies PPH Holdings BBH Holdings PSCH Holdings PTH Holdings LFSC Holdings BIB Holdings HEAL Holdings IBBQ Holdings MEDX Holdings FTXH Holdings This page (NASDAQ:IBB) was last updated on 9/21/2025 by MarketBeat.com Staff From Our PartnersTrump’s national nightmare is herePorter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger ...Porter & Company | SponsoredHe Called Nvidia at $1.10. 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