William Blair Investment Management, LLC Top Holdings and 13F Report (2025) About William Blair Investment Management, LLCInvestment ActivityWilliam Blair Investment Management, LLC has $37.68 billion in total holdings as of June 30, 2025.William Blair Investment Management, LLC owns shares of 417 different stocks, but just 107 companies or ETFs make up 80% of its holdings.Approximately 10.57% of the portfolio was purchased this quarter.About 15.84% of the portfolio was sold this quarter.This quarter, William Blair Investment Management, LLC has purchased 423 new stocks and bought additional shares in 118 stocks.William Blair Investment Management, LLC sold shares of 256 stocks and completely divested from 44 stocks this quarter.Largest Holdings Microsoft $1,980,547,836NVIDIA $1,938,915,381Taiwan Semiconductor Manufacturing $1,500,243,658Amazon.com $1,184,783,445Apple $1,077,930,466 Largest New Holdings this Quarter 68389X105 - Oracle $188,315,420 Holding565394103 - MAPLEBEAR INC $151,363,630 Holding144285103 - Carpenter Technology $134,789,697 Holding07831C103 - BellRing Brands $124,777,281 Holding29977A105 - Evercore $106,681,662 Holding Largest Purchases this Quarter O'Reilly Automotive 3,285,249 shares (about $296.10M)Oracle 861,343 shares (about $188.32M)BWX Technologies 1,273,895 shares (about $183.52M)MAPLEBEAR INC 3,345,792 shares (about $151.36M)Pure Storage 2,612,300 shares (about $150.42M) Largest Sales this Quarter e.l.f. Beauty 2,075,714 shares (about $258.30M)Yum China 4,853,287 shares (about $217.16M)Palo Alto Networks 1,035,967 shares (about $212.00M)Blueprint Medicines 1,421,094 shares (about $182.16M)Stride 1,218,542 shares (about $176.92M) Sector Allocation Over TimeMap of 500 Largest Holdings ofWilliam Blair Investment Management, LLC Selling Neutral Buying Latest 13F Holdings and Changes Since Previous Quarterly FilingIssuer NameHoldings ValueApproximate Purchase/SaleChange in SharesShares Held% of PortfolioSectorMSFTMicrosoft$1,980,547,836$72,364,201 ▼-3.5%3,981,7215.3%Computer and TechnologyNVDANVIDIA$1,938,915,381$11,810,543 ▲0.6%12,272,3935.1%Computer and TechnologyTSMTaiwan Semiconductor Manufacturing$1,500,243,658$167,514,263 ▼-10.0%6,622,2554.0%Computer and TechnologyAMZNAmazon.com$1,184,783,445$157,473,315 ▼-11.7%5,400,3533.1%Retail/WholesaleAAPLApple$1,077,930,466$2,963,270 ▲0.3%5,253,8412.9%Computer and TechnologyMETAMeta Platforms$1,054,820,049$105,627,335 ▼-9.1%1,429,1212.8%Computer and TechnologyAVGOBroadcom$815,695,762$32,980,144 ▼-3.9%2,959,1722.2%Computer and TechnologyMAMastercard$685,715,836$2,782,165 ▲0.4%1,220,2651.8%Business ServicesMELIMercadoLibre$623,609,504$44,348,074 ▼-6.6%238,5991.7%Retail/WholesaleSESEA$574,021,132$14,376,177 ▼-2.4%3,588,1471.5%Computer and TechnologyCGCarlyle Group$511,401,965$114,211,977 ▼-18.3%9,949,4551.4%FinanceTRUTransUnion$417,041,024$122,743,532 ▲41.7%4,739,1031.1%Business ServicesINTUIntuit$407,307,981$46,063,763 ▼-10.2%517,1311.1%Computer and TechnologyCOSTCostco Wholesale$372,697,561$22,675,566 ▲6.5%376,4851.0%Retail/WholesaleIDXXIDEXX Laboratories$367,440,098$25,731,984 ▲7.5%685,0881.0%MedicalNOWServiceNow$360,412,978$16,740,227 ▼-4.4%350,5691.0%Computer and TechnologyCMGChipotle Mexican Grill$352,421,208$29,530,464 ▼-7.7%6,276,4240.9%Retail/WholesaleTALEN ENERGY CORP$320,365,152$3,259,822 ▼-1.0%1,101,7820.9%COMDOCSDoximity$320,157,628$38,946,422 ▲13.8%5,219,3940.8%MedicalORLYO'Reilly Automotive$319,428,201$296,099,493 ▲1,269.2%3,544,0830.8%Retail/WholesalePRIMO BRANDS CORPORATION$314,051,470$23,676,125 ▼-7.0%10,602,6830.8%CLASS A COM SHSDDOGDatadog$291,640,639$51,760,976 ▲21.6%2,171,0760.8%Computer and TechnologyCCJCameco$287,217,440$37,609,887 ▲15.1%3,869,2910.8%Basic MaterialsSPOTSpotify Technology$285,286,269$44,975,332 ▼-13.6%371,7860.8%Computer and TechnologyPSTGPure Storage$283,687,217$150,416,234 ▲112.9%4,926,8360.8%Computer and TechnologyLINDE PLC$283,396,919$40,719,194 ▼-12.6%604,0260.8%SHSAAgilent Technologies$261,331,562$42,967,315 ▲19.7%2,214,4870.7%MedicalUBERUber Technologies$256,811,795$15,129,715 ▼-5.6%2,752,5380.7%Computer and TechnologyMRCYMercury Systems$252,909,486$36,437,098 ▼-12.6%4,695,6830.7%AerospaceLYVLive Nation Entertainment$245,832,269$22,016,989 ▼-8.2%1,625,0150.7%Consumer DiscretionaryCFLTConfluent$240,302,813$8,881,986 ▲3.8%9,639,1020.6%Computer and TechnologyEGEverest Group$233,058,595$5,630,635 ▼-2.4%685,7690.6%FinanceBRPThe Baldwin Insurance Group$231,291,728$6,837,613 ▼-2.9%5,402,7500.6%FinanceDTDynatrace$229,859,161$49,618,000 ▼-17.8%4,163,3610.6%Computer and TechnologyNVTnVent Electric$228,095,812$51,968,238 ▲29.5%3,113,9360.6%Computer and TechnologyCIENCiena$220,285,558$57,167,589 ▲35.0%2,708,5400.6%Computer and TechnologyBWXTBWX Technologies$218,590,305$183,517,313 ▲523.2%1,517,3560.6%AerospaceSNSharkNinja$216,992,613$10,449,582 ▼-4.6%2,192,0660.6%Retail/WholesaleWAYSTAR HLDG CORP$214,132,848$41,357,988 ▲23.9%5,239,3650.6%COMUNHUnitedHealth Group$213,431,392$18,443,660 ▲9.5%684,1410.6%MedicalTYLTyler Technologies$212,517,726$29,591,609 ▲16.2%358,4740.6%Computer and TechnologyCPRTCopart$211,734,351$122,124,827 ▼-36.6%4,314,9450.6%Business ServicesRACEFerrari$211,424,533$84,559,410 ▼-28.6%430,8280.6%Auto/Tires/TrucksCWSTCasella Waste Systems$207,701,884$48,010,772 ▼-18.8%1,800,1550.6%Business ServicesCRMSalesforce$206,907,901$88,600,253 ▼-30.0%758,7660.5%Computer and TechnologyITUBItau Unibanco$198,859,583$67,935,781 ▲51.9%29,278,4620.5%FinanceMNSTMonster Beverage$196,932,205$59,149,574 ▲42.9%3,143,8730.5%Consumer StaplesCWANClearwater Analytics$193,266,371$587,373 ▼-0.3%8,812,8760.5%Computer and TechnologyFLUTTER ENTMT PLC$191,572,932$40,109,845 ▼-17.3%670,3980.5%SHSPLNTPlanet Fitness$189,631,843$11,422,224 ▼-5.7%1,738,9440.5%Consumer DiscretionaryORCLOracle$188,315,420$188,315,420 ▲New Holding861,3430.5%Computer and TechnologyLAM RESEARCH CORP$185,760,541$137,785,938 ▼-42.6%1,908,3680.5%COM NEWBAMBrookfield Asset Management$184,941,396$22,641,527 ▼-10.9%3,345,5390.5%FinanceMLIMueller Industries$184,336,148$2,892,867 ▼-1.5%2,319,5690.5%IndustrialsQTWOQ2$183,984,744$124,288 ▼-0.1%1,965,8590.5%Computer and TechnologyPODDInsulet$183,210,611$14,263,144 ▼-7.2%583,1390.5%MedicalWALWestern Alliance Bancorporation$180,393,941$1,614,498 ▲0.9%2,313,3360.5%FinanceACVAACV Auctions$180,199,431$531,967 ▲0.3%11,109,7060.5%Retail/WholesaleMANHManhattan Associates$179,368,715$57,597,457 ▼-24.3%908,3340.5%Computer and TechnologyBFAMBright Horizons Family Solutions$178,726,094$94,543,384 ▼-34.6%1,446,1210.5%Business ServicesRYRoyal Bank Of Canada$178,478,340$42,306,331 ▼-19.2%1,353,3890.5%FinanceVEEVVeeva Systems$177,609,361$3,325,881 ▼-1.8%616,7420.5%MedicalCWCurtiss-Wright$176,963,558$60,086,764 ▼-25.3%362,2220.5%AerospaceBCOBrink's$175,274,540$22,911,542 ▼-11.6%1,962,9810.5%Business ServicesPOOLPool$170,897,639$20,803,802 ▲13.9%586,3100.5%Consumer DiscretionaryEHCEncompass Health$169,691,470$46,562,611 ▼-21.5%1,383,7680.5%MedicalAPPFAppFolio$168,893,800$71,578,854 ▲73.6%733,4280.4%Computer and TechnologyINSMInsmed$167,626,185$65,175,973 ▼-28.0%1,665,6020.4%MedicalCHEChemed$165,111,146$49,892,796 ▼-23.2%339,0860.4%MedicalLRNStride$159,861,595$176,920,113 ▼-52.5%1,101,0510.4%Consumer DiscretionaryMLMMartin Marietta Materials$157,395,066$3,314,072 ▼-2.1%286,7150.4%ConstructionMAPLEBEAR INC$151,363,630$151,363,630 ▲New Holding3,345,7920.4%COMLANCLancaster Colony$150,889,889$26,442,794 ▲21.2%873,3570.4%Consumer StaplesWGSGeneDx$150,594,719$40,839,236 ▲37.2%1,631,4020.4%MedicalWSCWillScot$149,685,049$4,953,838 ▲3.4%5,462,9580.4%FinanceFTAI AVIATION LTD$149,202,854$14,726,616 ▼-9.0%1,296,9650.4%SHSEPAMEPAM Systems$148,868,648$25,711,573 ▲20.9%841,9220.4%Computer and TechnologyTWSTTwist Bioscience$143,723,961$3,669,324 ▲2.6%3,906,6040.4%MedicalGMEDGlobus Medical$141,944,930$7,746,021 ▲5.8%2,405,0310.4%MedicalEXLSExlService$139,581,851$32,511,929 ▼-18.9%3,187,5280.4%Computer and TechnologyPSNParsons$135,593,697$56,971,528 ▲72.5%1,889,2810.4%Business ServicesCRSCarpenter Technology$134,789,697$134,789,697 ▲New Holding487,6970.4%Basic MaterialsAPOApollo Global Management$131,441,846$2,654,388 ▼-2.0%926,4950.3%FinanceNOVTNovanta$126,337,604$6,576,075 ▲5.5%979,8930.3%Computer and TechnologyBRBRBellRing Brands$124,777,281$124,777,281 ▲New Holding2,153,9320.3%Consumer StaplesEXPEagle Materials$123,639,782$44,976,953 ▲57.2%611,7450.3%ConstructionGKOSGlaukos$117,347,253$40,366,249 ▲52.4%1,136,0950.3%MedicalIBNICICI Bank$116,681,033$8,415,805 ▼-6.7%3,467,4870.3%FinanceGWREGuidewire Software$112,650,582$23,419,270 ▼-17.2%478,4480.3%Computer and TechnologyONBOld National Bancorp$111,491,940$14,257,702 ▼-11.3%5,224,5520.3%FinanceONTOOnto Innovation$110,907,940$96,127,650 ▲650.4%1,098,8600.3%Computer and TechnologyEXASExact Sciences$107,351,834$12,162,046 ▼-10.2%2,020,1700.3%MedicalWMSAdvanced Drainage Systems$107,232,754$9,149,750 ▼-7.9%933,5950.3%ConstructionBAPCredicorp$106,790,033$10,759,135 ▲11.2%477,7650.3%FinanceEVREvercore$106,681,662$106,681,662 ▲New Holding395,0880.3%FinanceGRABGrab$106,386,351$43,799,922 ▲70.0%21,150,3680.3%Computer and TechnologyMDGLMadrigal Pharmaceuticals$106,011,463$867,366 ▼-0.8%350,2890.3%MedicalFRPTFreshpet$103,779,541$17,728,589 ▲20.6%1,527,0680.3%Consumer StaplesMMYTMakeMyTrip$103,544,211$19,167,027 ▲22.7%1,056,3580.3%Computer and TechnologyINSPInspire Medical Systems$99,815,061$9,895,092 ▲11.0%769,1690.3%MedicalShowing largest 100 holdings. View all holdings. More Institutional Buying and Selling Information SEC Filings and Trading Data SEC Filings 13F Filings Top 13F Buys Top 13F Sells Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. 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