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William Blair Investment Management, LLC

Q3 2018 Holdings

Filed 2018-11-13 | 419 holdings | $1.7B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Alibaba Group Hldg LTD(BABA)SPONSORED ADS01609W102$926.4M5,622,94155.3%
Burlington Stores Inc(BURL)COM122017106$161.7M992,7379.7%
Adobe SYS Inc(ADBE)COM00724F101$131.3M486,2957.8%
Baozun Inc(BZUN)SPONSORED ADR06684L103$49.5M1,018,1943.0%
Align Technology Inc(ALGN)COM016255101$36.7M93,8912.2%
Carmax Inc(KMX)COM143130102$33.6M449,5192.0%
Conmed Corp(CNMD)COM207410101$29.5M372,7211.8%
Blue Bird Corp(BLBD)COM095306106$28.9M1,178,2301.7%
Biogen Inc(BIIB)COM09062X103$23.9M67,6181.4%
Codexis Inc(CDXS)COM192005106$22.8M1,328,6331.4%
Cavco Inds Inc del(CVCO)COM149568107$21.7M85,6671.3%
Boot Barn Hldgs Inc(BOOT)COM099406100$19.7M692,5591.2%
Darling Ingredients Inc(DAR)COM237266101$19.2M993,0011.1%
Agilysys Inc(AGYS)COM00847J105$16.6M1,018,8291.0%
Casella Waste SYS Inc(CWST)CL A147448104$16.5M532,5631.0%
Dana Incorporated(DAN)COM235825205$16.3M870,4561.0%
Ciena Corp(CIEN)COM NEW171779309$16.0M513,2781.0%
Costco Whsl Corp New(COST)COM22160K105$14.8M63,1550.9%
Cars COM Inc(CARS)COM14575E105$13.9M503,0880.8%
Beigene LTD(ONC)SPONSORED ADR07725L102$13.3M77,4630.8%
Cryolife Inc(AORT)COM228903100$12.5M353,7780.7%
Aspen Group Inc(ASPU)COM NEW04530L203$7.8M1,146,9030.5%
Axos Finl Inc(AX)COM05465C100$6.8M197,3760.4%
Bluelinx Hldgs Inc(BXC)COM NEW09624H208$4.1M129,4880.2%
Apple Hospitality REIT Inc(APLE)COM NEW03784Y200$3.0M170,0400.2%
Cadence Design System Inc(CDNS)COM127387108$992.0K21,8780.1%
Taiwan Semiconductor MFG LTD(TSM)SPONSORED ADR874039100$760.8K17,228,9080.0%
Spdr S&P 500 ETF TR(SPY)TR UNIT78462F103$691.1K2,377,2000.0%
Toronto Dominion BK ONT(TD)COM NEW891160509$425.5K7,001,5940.0%
Costar Group Inc(CSGP)COM22160N109$418.2K993,7060.0%
BWX Technologies Inc(BWXT)COM05605H100$415.7K6,647,1750.0%
Encompass Health Corp(EHC)COM29261A100$401.3K5,147,5800.0%
Live Nation Entertainment in(LYV)COM538034109$367.3K6,744,0570.0%
Copart Inc(CPRT)COM217204106$366.0K7,102,8120.0%
Booz Allen Hamilton Hldg COR(BAH)CL A099502106$362.5K7,304,6750.0%
Amazon COM Inc(AMZN)COM023135106$349.8K174,6390.0%
SIX Flags Entmt Corp New(SIXEUR)COM83001A102$345.6K4,949,5440.0%
Suncor Energy Inc New(SU)COM867224107$335.3K8,663,7000.0%
Ball Corp(BALL)COM058498106$316.3K7,190,8140.0%
Veeva SYS Inc(VEEV)CL A COM922475108$290.3K2,666,3660.0%
Pure Storage Inc(PSTG)CL A74624M102$289.3K11,149,5200.0%
Dexcom Inc(DXCM)COM252131107$284.7K1,990,2630.0%
Ligand Pharmaceuticals Inc(LGND)COM NEW53220K504$282.8K1,030,1750.0%
Microsoft Corp(MSFT)COM594918104$255.7K2,235,7890.0%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$255.5K211,6360.0%
Guidewire Software Inc(GWRE)COM40171V100$254.2K2,516,9920.0%
Teleflex Inc(TFX)COM879369106$254.2K955,4280.0%
Dominos Pizza Inc(DPZ)COM25754A201$251.6K853,5760.0%
Middleby Corp(MIDD)COM596278101$247.1K1,910,4510.0%
Brookfield Asset Mgmt IncCL A LTD VT SH112585104$241.2K5,417,4600.0%
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