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William Blair Investment Management, LLC

Q3 2021 Holdings

Filed 2021-11-10 | 431 holdings | $4.3B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Builders Firstsource Inc(BLDR)COM12008R107$439.4M8,491,61610.1%
Charles RIV Labs Intl Inc(CRL)COM159864107$389.0M942,5969.0%
Brooks Automation Inc New(AZTA)COM114340102$385.6M3,767,0768.9%
Crown Hldgs Inc(CCK)COM228368106$338.7M3,360,4427.8%
Axon Enterprise Inc(AXON)COM05464C101$328.9M1,879,1807.6%
Bright Horizons FAM SOL in D(BFAM)COM109194100$292.4M2,097,1656.7%
Acadia Healthcare Company in(ACHC)COM00404A109$263.9M4,136,9026.1%
Burlington Stores Inc(BURL)COM122017106$211.5M745,7534.9%
Alarm COM Hldgs Inc(ALRM)COM011642105$209.0M2,672,7814.8%
Adobe Systems Incorporated(ADBE)COM00724F101$167.7M291,3673.9%
Certara Inc(CERT)COM15687V109$149.2M4,506,1963.4%
Advanced Micro Devices Inc(AMD)COM007903107$121.5M1,180,4882.8%
Chart Inds Inc(GTLS)COM16115Q308$119.4M624,7502.8%
Costco Whsl Corp New(COST)COM22160K105$96.3M214,3562.2%
Costar Group Inc(CSGP)COM22160N109$74.0M859,9011.7%
Boot Barn Hldgs Inc(BOOT)COM099406100$65.1M732,2111.5%
Align Technology Inc(ALGN)COM016255101$64.5M96,9021.5%
Casella Waste SYS Inc(CWST)CL A147448104$59.7M786,4281.4%
Connectone Bancorp Inc(CNOB)COM20786W107$57.3M1,908,3831.3%
Codexis Inc(CDXS)COM192005106$55.2M2,371,1971.3%
Coupang Inc(CPNG)CL A22266T109$48.9M1,755,1511.1%
Canada Goose Hldgs Inc(GOOS)SHS SUB VTG135086106$47.1M1,321,3751.1%
Conduent Inc(CNDT)COM206787103$46.1M6,991,2921.1%
Cbiz Inc(CBZ)COM124805102$43.4M1,342,2881.0%
Cracker Barrel Old Ctry Stor(CBRL)COM22410J106$40.0M285,7300.9%
Autodesk Inc(ADSK)COM052769106$38.0M133,2530.9%
Cadence Design System Inc(CDNS)COM127387108$36.6M241,8340.8%
Century Alum Co(CENX)COM156431108$21.8M1,621,0360.5%
Cryolife Inc(AORT)COM228903100$20.6M925,6440.5%
Axogen Inc(AXGN)COM05463X106$19.3M1,219,0660.4%
Callaway Golf Co(CALY)COM131193104$12.8M464,9740.3%
ANI Pharmaceuticals Inc(ANIP)COM00182C103$12.3M374,1060.3%
Butterfly Network Inc(BFLY)COM CL A124155102$10.7M1,023,0520.2%
Centene Corp del(CNC)COM15135B101$9.3M148,4890.2%
Carmax Inc(KMX)COM143130102$2.4M19,1180.1%
Alibaba Group Hldg LTD(BABA)SPONSORED ADS01609W102$1.7M11,3420.0%
Taiwan Semiconductor MFG LTD(TSM)SPONSORED ADS874039100$1.2M11,012,6830.0%
Darling Ingredients Inc(DAR)COM237266101$1.0M13,9250.0%
Microsoft Corp(MSFT)COM594918104$530.6K1,882,2670.0%
SEA LTD(SE)SPONSORD ADS81141R100$511.1K1,603,5590.0%
Mercadolibre Inc(MELI)COM58733R102$504.5K300,3760.0%
Canadian Natl RY Co(CNI)COM136375102$418.3K3,614,3490.0%
Amazon COM Inc(AMZN)COM023135106$403.1K122,6960.0%
DXC Technology Co(DXC)COM23355L106$400.0K11,8950.0%
Dynatrace Inc(DT)COM NEW268150109$398.6K5,616,9000.0%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$393.2K147,0790.0%
BWX Technologies Inc(BWXT)COM05605H100$390.7K7,253,1580.0%
Pure Storage Inc(PSTG)CL A74624M102$388.9K15,458,7820.0%
Nice LTD(NSY)SPONSORED ADR653656108$382.3K1,346,0330.0%
Spdr S&P 500 ETF TR(SPY)TR UNIT78462F103$358.4K835,2500.0%
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