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William Blair Investment Management, LLC

Q2 2020 Holdings

Filed 2020-08-12 | 341 holdings | $1.8B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
BJS Whsl Club Hldgs Inc(BJ)COM05550J101$266.3M7,144,84015.2%
Crown Hldgs Inc(CCK)COM228368106$209.4M3,215,69311.9%
Burlington Stores Inc(BURL)COM122017106$192.5M977,45211.0%
Bright Horizons FAM SOL in D(BFAM)COM109194100$177.7M1,516,18510.1%
Adobe Inc(ADBE)COM00724F101$177.2M407,03810.1%
Brooks Automation Inc New(AZTA)COM114340102$160.8M3,635,0549.2%
Alarm COM Hldgs Inc(ALRM)COM011642105$145.1M2,238,1558.3%
Advanced Micro Devices Inc(AMD)COM007903107$64.2M1,220,6233.7%
Costco Whsl Corp New(COST)COM22160K105$41.0M135,2032.3%
Boot Barn Hldgs Inc(BOOT)COM099406100$37.7M1,749,6612.1%
Darling Ingredients Inc(DAR)COM237266101$33.7M1,368,0741.9%
Cadence Design System Inc(CDNS)COM127387108$30.2M314,5051.7%
Casella Waste SYS Inc(CWST)CL A147448104$27.6M529,4901.6%
Codexis Inc(CDXS)COM192005106$26.1M2,290,4831.5%
Centene Corp del(CNC)COM15135B101$18.5M291,8541.1%
Blue Bird Corp(BLBD)COM095306106$18.3M1,220,0561.0%
Align Technology Inc(ALGN)COM016255101$16.7M60,9651.0%
Cryolife Inc(AORT)COM228903100$14.7M765,5300.8%
Agilysys Inc(AGYS)COM00847J105$13.9M776,7060.8%
Conmed Corp(CNMD)COM207410101$13.1M181,8910.7%
Curtiss Wright Corp(CW)COM231561101$11.7M130,8470.7%
Cavco Inds Inc del(CVCO)COM149568107$10.4M54,0970.6%
Axogen Inc(AXGN)COM05463X106$9.2M995,4950.5%
Caredx Inc(CDNA)COM14167L103$8.6M242,9570.5%
CNX Resources Corporation(CNX)COM12653C108$3.8M438,7870.2%
Alibaba Group Hldg LTD(BABA)SPONSORED ADS01609W102$3.5M16,2950.2%
Carmax Inc(KMX)COM143130102$2.0M21,8920.1%
Taiwan Semiconductor MFG LTD(TSM)SPONSORED ADS874039100$850.2K14,973,1900.0%
Spdr S&P 500 ETF TR(SPY)TR UNIT78462F103$602.4K1,953,7000.0%
Netease Inc(NTES)SPONSORED ADS64110W102$466.4K1,086,0690.0%
BWX Technologies Inc(BWXT)COM05605H100$430.6K7,602,1460.0%
Amazon COM Inc(AMZN)COM023135106$425.0K154,0630.0%
Horizon Therapeutics PUB LTDSHSG46188101$423.5K7,619,5780.0%
Grand Canyon ED Inc(LOPE)COM38526M106$371.5K4,104,1520.0%
Mercadolibre Inc(MELI)COM58733R102$344.2K349,1960.0%
TAL Education Group(TAL)SPONSORED ADS874080104$327.7K4,791,9830.0%
Microsoft Corp(MSFT)COM594918104$304.2K1,494,5290.0%
Canadian Natl RY Co(CNI)COM136375102$302.6K3,419,4660.0%
Encompass Health Corp(EHC)COM29261A100$282.6K4,563,2190.0%
Nice LTD(NSY)SPONSORED ADR653656108$281.7K1,488,6160.0%
Pure Storage Inc(PSTG)CL A74624M102$281.2K16,223,9630.0%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$277.0K195,3580.0%
Lululemon Athletica Inc(LULU)COM550021109$275.4K882,6720.0%
Trex Co Inc(TREX)COM89531P105$263.5K2,025,8750.0%
Martin Marietta Matls Inc(MLM)COM573284106$246.6K1,193,8090.0%
Zynga Inc(ZNGAEUR)CL A98986T108$245.9K25,772,5540.0%
Etsy Inc(ETSY)COM29786A106$236.8K2,228,9400.0%
Brookfield Asset Mgmt IncCL A LTD VT SH112585104$232.2K7,056,5090.0%
Yandex N V(NBIS)SHS CLASS AN97284108$231.9K4,636,4300.0%
Penumbra Inc(PEN)COM70975L107$227.4K1,271,8130.0%
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