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William Blair Investment Management, LLC

Q2 2021 Holdings

Filed 2021-08-12 | 465 holdings | $4.2B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Brooks Automation Inc New(AZTA)COM114340102$363.2M3,812,0578.7%
Charles RIV Labs Intl Inc(CRL)COM159864107$362.0M978,4788.7%
Builders Firstsource Inc(BLDR)COM12008R107$359.4M8,423,9978.6%
Crown Hldgs Inc(CCK)COM228368106$347.7M3,402,0628.4%
Axon Enterprise Inc(AXON)COM05464C101$340.6M1,926,4018.2%
Bright Horizons FAM SOL in D(BFAM)COM109194100$313.6M2,131,9557.5%
Acadia Healthcare Company in(ACHC)COM00404A109$296.6M4,726,7967.1%
Burlington Stores Inc(BURL)COM122017106$238.0M739,0995.7%
Alarm COM Hldgs Inc(ALRM)COM011642105$221.9M2,619,6195.3%
Adobe Systems Incorporated(ADBE)COM00724F101$178.2M304,2814.3%
BJS Whsl Club Hldgs Inc(BJ)COM05550J101$166.6M3,501,4944.0%
Certara Inc(CERT)COM15687V109$135.2M4,772,7663.3%
Advanced Micro Devices Inc(AMD)COM007903107$112.6M1,198,9832.7%
Costco Whsl Corp New(COST)COM22160K105$86.4M218,4882.1%
Costar Group Inc(CSGP)COM22160N109$73.4M885,8961.8%
Boot Barn Hldgs Inc(BOOT)COM099406100$68.9M819,2751.7%
Coupang Inc(CPNG)CL A22266T109$67.4M1,611,3881.6%
Align Technology Inc(ALGN)COM016255101$59.9M98,0901.4%
Canada Goose Hldgs Inc(GOOS)SHS SUB VTG135086106$58.8M1,344,1401.4%
Codexis Inc(CDXS)COM192005106$53.1M2,343,8781.3%
Casella Waste SYS Inc(CWST)CL A147448104$49.3M777,7681.2%
Cadence Design System Inc(CDNS)COM127387108$33.5M245,0340.8%
Caredx Inc(CDNA)COM14167L103$30.5M332,9230.7%
Axogen Inc(AXGN)COM05463X106$30.4M1,408,1750.7%
Cryolife Inc(AORT)COM228903100$26.0M915,5570.6%
Callaway Golf Co(CALY)COM131193104$15.5M458,0710.4%
Butterfly Network Inc(BFLY)COM CL A124155102$14.6M1,007,6260.4%
Centene Corp del(CNC)COM15135B101$10.6M145,0820.3%
Alibaba Group Hldg LTD(BABA)SPONSORED ADS01609W102$2.8M12,2280.1%
Carmax Inc(KMX)COM143130102$2.5M19,1180.1%
Darling Ingredients Inc(DAR)COM237266101$2.3M33,6270.1%
Conmed Corp(CNMD)COM207410101$1.6M11,7010.0%
Curtiss Wright Corp(CW)COM231561101$1.4M11,3830.0%
Chart Inds Inc(GTLS)COM16115Q308$1.3M9,0190.0%
Taiwan Semiconductor MFG LTD(TSM)SPONSORED ADS874039100$1.3M10,834,7330.0%
CNX RES Corp(CNX)COM12653C108$902.0K66,0490.0%
Cavco Inds Inc del(CVCO)COM149568107$600.0K2,7020.0%
Allscripts Healthcare Solutn(MDRX)COM01988P108$566.0K30,5630.0%
Spdr S&P 500 ETF TR(SPY)TR UNIT78462F103$556.4K1,299,8600.0%
Microsoft Corp(MSFT)COM594918104$531.7K1,962,8050.0%
Avanos MED Inc(AVNS)COM05350V106$531.0K14,6040.0%
Amazon COM Inc(AMZN)COM023135106$438.8K127,5520.0%
BWX Technologies Inc(BWXT)COM05605H100$427.5K7,355,3910.0%
Mercadolibre Inc(MELI)COM58733R102$419.9K269,5270.0%
Horizon Therapeutics PUB LSHSG46188101$411.4K4,393,6870.0%
SEA LTD(SE)SPONSORD ADS81141R100$406.4K1,480,1040.0%
Brinks Co(BCO)COM109696104$403.7K5,253,2370.0%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$387.9K158,8410.0%
Canadian Natl RY Co(CNI)COM136375102$382.8K3,628,6820.0%
Euronet Worldwide Inc(EEFT)COM298736109$343.9K2,541,0160.0%
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