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William Blair Investment Management, LLC

Q1 2020 Holdings

Filed 2020-05-08 | 339 holdings | $2.2B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Alibaba Group Hldg LTD(BABA)SPONSORED ADS01609W102$1.1B5,597,63648.5%
BJS Whsl Club Hldgs Inc(BJ)COM05550J101$229.5M9,009,51610.2%
Crown Hldgs Inc(CCK)COM228368106$185.8M3,200,4588.3%
Burlington Stores Inc(BURL)COM122017106$154.8M977,0936.9%
Adobe Inc(ADBE)COM00724F101$120.3M378,1265.4%
Brooks Automation Inc New(AZTA)COM114340102$81.2M2,661,7313.6%
Advanced Micro Devices Inc(AMD)COM007903107$79.6M1,750,9803.5%
Costco Whsl Corp New(COST)COM22160K105$35.5M124,6151.6%
Autodesk Inc(ADSK)COM052769106$27.9M179,0381.2%
Darling Ingredients Inc(DAR)COM237266101$26.9M1,404,8741.2%
Codexis Inc(CDXS)COM192005106$26.7M2,394,9401.2%
Casella Waste SYS Inc(CWST)CL A147448104$23.7M607,2481.1%
Alarm COM Hldgs Inc(ALRM)COM011642105$19.6M504,4520.9%
Boot Barn Hldgs Inc(BOOT)COM099406100$19.0M1,466,2790.8%
Centene Corp del(CNC)COM15135B101$18.2M305,6640.8%
Agilysys Inc(AGYS)COM00847J105$15.7M938,6920.7%
Blue Bird Corp(BLBD)COM095306106$14.3M1,309,0530.6%
Cryolife Inc(AORT)COM228903100$13.5M798,7520.6%
Carmax Inc(KMX)COM143130102$12.8M238,4350.6%
Axogen Inc(AXGN)COM05463X106$10.8M1,037,8000.5%
Conmed Corp(CNMD)COM207410101$10.4M181,8300.5%
Curtiss Wright Corp(CW)COM231561101$10.0M108,6470.4%
Cavco Inds Inc del(CVCO)COM149568107$4.4M30,2660.2%
Taiwan Semiconductor MFG LTD(TSM)SPONSORED ADS874039100$828.3K17,319,2350.0%
Spdr S&P 500 ETF TR(SPY)TR UNIT78462F103$552.0K2,141,6000.0%
Netease Inc(NTES)SPONSORED ADS64110W102$385.4K1,200,3330.0%
BWX Technologies Inc(BWXT)COM05605H100$378.6K7,772,1850.0%
TAL Education Group(TAL)SPONSORED ADS874080104$334.0K6,268,5540.0%
Grand Canyon ED Inc(LOPE)COM38526M106$312.3K4,093,8840.0%
Encompass Health Corp(EHC)COM29261A100$291.9K4,558,4870.0%
Amazon COM Inc(AMZN)COM023135106$255.0K130,7970.0%
Trex Co Inc(TREX)COM89531P105$247.8K3,091,8420.0%
Canadian Natl RY Co(CNI)COM136375102$247.7K3,166,8270.0%
Horizon Therapeutics PUB LTDSHSG46188101$246.4K8,319,9450.0%
Teledyne Technologies Inc(TDY)COM879360105$243.4K818,7220.0%
Copart Inc(CPRT)COM217204106$230.3K3,360,9550.0%
Live Nation Entertainment in(LYV)COM538034109$220.2K4,843,1560.0%
Brookfield Asset Mgmt IncCL A LTD VT SH112585104$219.3K4,956,5850.0%
Martin Marietta Matls Inc(MLM)COM573284106$215.7K1,139,7590.0%
Nice LTD(NSY)SPONSORED ADR653656108$207.7K1,446,3580.0%
Teleflex Incorporated(TFX)COM879369106$205.8K702,7080.0%
Penumbra Inc(PEN)COM70975L107$204.3K1,266,2330.0%
Brinks Co(BCO)COM109696104$202.4K3,887,8330.0%
Cable One Inc(CABO)COM12685J105$202.1K122,9520.0%
Pure Storage Inc(PSTG)CL A74624M102$199.0K16,178,6710.0%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$196.7K169,2700.0%
J2 Global Inc(ZD)COM48123V102$193.9K2,590,0380.0%
Microsoft Corp(MSFT)COM594918104$190.5K1,207,7780.0%
Booz Allen Hamilton Hldg COR(BAH)CL A099502106$189.9K2,766,9360.0%
Amedisys Inc(AMED)COM023436108$178.0K970,0330.0%
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