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William Blair Investment Management, LLC

Q1 2026 Holdings

Filed 2026-05-08 | 413 holdings | $30.3B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Taiwan Semiconductor Manufac(TSM)SPONSORED ADS874039100$1.9B5,518,2606.2%
Nvidia Corporation(NVDA)COM67066G104$1.6B8,941,7565.2%
Apple Inc(AAPL)COM037833100$1.2B4,812,4334.0%
Microsoft Corp(MSFT)COM594918104$1.1B2,896,7823.5%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$720.2M2,504,6052.4%
Broadcom Inc(AVGO)COM11135F101$681.4M2,201,5582.3%
Amazon COM Inc(AMZN)COM023135106$658.9M3,163,6292.2%
Meta Platforms Inc(META)CL A30303M102$579.6M1,013,1221.9%
Mastercard Incorporated(MA)CL A57636Q104$530.0M1,060,6511.8%
Astrazeneca PLC(AZN)ORDG0593M107$377.3M1,942,1551.2%
Linde PLC(LIN)SHSG54950103$315.5M636,3381.0%
Carlyle Group Inc(CG)COM14316J108$304.9M6,301,1091.0%
Costco Wholesale Corporation(COST)COM22160K105$301.4M302,4681.0%
Itau Unibanco Hldg S A(BVXB)SPON ADR REP PFD465562106$265.6M31,684,7080.9%
Twist Bioscience Corp(TWST)COM90184D100$250.4M5,269,7180.8%
Servicenow Inc(NOW)COM81762P102$248.0M2,371,6140.8%
Primo Brands Corporation(PRMB)CLASS A COM SHS741623102$245.8M13,056,1920.8%
Mueller Inds Inc(MLI)COM624756102$233.8M2,109,7290.8%
Intuit(INTU)COM461202103$230.8M533,7360.8%
Monster Beverage Corp New(MNST)COM61174X109$212.7M2,935,2470.7%
Advanced Micro Devices Inc(AMD)COM007903107$212.1M1,042,5940.7%
Credicorp LTD(BAP)COMG2519Y108$211.2M622,6900.7%
Agilent Technologies Inc(A)COM00846U101$204.7M1,795,7640.7%
Oreilly Automotive Inc(ORLY)COM67103H107$204.0M2,210,0340.7%
BWX Technologies Inc(BWXT)COM05605H100$200.8M981,7820.7%
Transunion(TRU)COM89400J107$200.0M2,891,1870.7%
Onto Innovation Inc(ONTO)COM683344105$197.7M964,2130.7%
Idexx Labs Inc(IDXX)COM45168D104$197.6M351,6210.7%
Nextpower Inc(NXT)CLASS A COM65290E101$195.6M1,622,4890.6%
Argenx SE(ARGX)SPONSORED ADR04016X101$194.4M266,0670.6%
Cava Group Inc(CAVA)COM148929102$193.7M2,393,9710.6%
Lattice Semiconductor Corp(LSCC)COM518415104$189.6M2,043,7200.6%
F5 Inc(FFIV)COM315616102$188.0M649,9480.6%
Akamai Technologies Inc(AKAM)COM00971T101$185.9M1,619,0600.6%
Cameco Corp(CCJ)COM13321L108$182.7M1,682,3030.6%
Unitedhealth Group Inc(UNH)COM91324P102$182.2M673,2630.6%
Madrigal Pharmaceuticals Inc(MDGL)COM558868105$178.3M340,5190.6%
NU Hldgs LTD(NU)ORD SHS CL AG6683N103$176.3M12,267,6000.6%
Globus MED Inc(GMED)CL A379577208$173.2M2,009,7630.6%
C H Robinson Worldwide in(CHRW)COM NEW12541W209$173.0M1,041,6580.6%
Everpure Inc(PSTG)CL A74624M102$170.1M2,881,4810.6%
Snowflake Inc(SNOW)COM SHS833445109$170.1M1,127,5250.6%
Talen Energy Corp(TLN)COM87422Q109$167.7M525,2140.6%
Grand Canyon ED Inc(LOPE)COM38526M106$166.6M979,7340.6%
Everest Group LTD(EG)COMG3223R108$165.4M506,1660.5%
Halozyme Therapeutics Inc(HALO)COM40637H109$163.3M2,525,9750.5%
Martin Marietta Matls Inc(MLM)COM573284106$160.4M272,3920.5%
Coherent Corp(COHR)COM19247G107$159.2M668,1370.5%
Curtiss Wright Corp(CW)COM231561101$158.1M232,0690.5%
Regal Rexnord Corporation(RRX)COM758750103$156.8M837,4930.5%
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