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William Blair Investment Management, LLC

Q4 2018 Holdings

Filed 2019-02-13 | 404 holdings | $1.3B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Alibaba Group Hldg LTD(BABA)SPONSORED ADS01609W102$704.0M5,135,75155.9%
Burlington Stores Inc(BURL)COM122017106$187.7M1,153,79014.9%
Adobe Inc(ADBE)COM00724F101$76.6M338,6776.1%
Align Technology Inc(ALGN)COM016255101$28.3M134,9522.2%
Darling Ingredients Inc(DAR)COM237266101$27.2M1,411,3552.2%
Conmed Corp(CNMD)COM207410101$24.3M379,2671.9%
Blue Bird Corp(BLBD)COM095306106$21.1M1,159,9291.7%
Codexis Inc(CDXS)COM192005106$18.3M1,095,6911.5%
Ciena Corp(CIEN)COM NEW171779309$17.7M520,9141.4%
Boot Barn Hldgs Inc(BOOT)COM099406100$16.9M992,1861.3%
Casella Waste SYS Inc(CWST)CL A147448104$15.7M552,4621.2%
Agilysys Inc(AGYS)COM00847J105$15.6M1,084,8211.2%
Costco Whsl Corp New(COST)COM22160K105$13.3M65,1711.1%
Dana Incorporated(DAN)COM235825205$12.0M883,5041.0%
Cavco Inds Inc del(CVCO)COM149568107$11.5M88,2330.9%
Cars COM Inc(CARS)COM14575E105$11.0M509,5780.9%
Cryolife Inc(AORT)COM228903100$10.7M376,6250.8%
Carmax Inc(KMX)COM143130102$10.1M161,5490.8%
Biogen Inc(BIIB)COM09062X103$8.5M28,1490.7%
Aspen Group Inc(ASPU)COM NEW04530L203$6.7M1,220,4980.5%
Apple Hospitality REIT Inc(APLE)COM NEW03784Y200$2.7M190,7070.2%
Cadence Design System Inc(CDNS)COM127387108$1.1M25,6240.1%
Taiwan Semiconductor MFG LTD(TSM)SPONSORED ADR874039100$605.8K16,411,8620.0%
Spdr S&P 500 ETF TR(SPY)TR UNIT78462F103$564.3K2,257,8500.0%
Copart Inc(CPRT)COM217204106$320.7K6,711,4950.0%
Rogers Communications Inc(RCI)CL B775109200$319.5K6,232,6660.0%
Costar Group Inc(CSGP)COM22160N109$284.6K843,7640.0%
Booz Allen Hamilton Hldg COR(BAH)CL A099502106$266.2K5,906,6800.0%
Brookfield Asset Mgmt IncCL A LTD VT SH112585104$265.8K6,930,3490.0%
Ball Corp(BALL)COM058498106$256.8K5,584,5340.0%
Canadian Natl RY Co(CNI)COM136375102$245.3K3,309,9150.0%
Toronto Dominion BK ONT(TD)COM NEW891160509$245.0K4,925,8330.0%
Cboe Global Markets Inc(CBOE)COM12503M108$242.7K2,480,9560.0%
BWX Technologies Inc(BWXT)COM05605H100$242.3K6,339,1650.0%
Live Nation Entertainment in(LYV)COM538034109$238.4K4,840,2750.0%
Euronet Worldwide Inc(EEFT)COM298736109$229.0K2,236,6090.0%
Credicorp LTD(BAP)COMG2519Y108$227.7K1,027,1740.0%
Adtalem Global ED Inc(ATGE)COM00737L103$227.1K4,799,3960.0%
Encompass Health Corp(EHC)COM29261A100$220.8K3,578,7040.0%
Veeva SYS Inc(VEEV)CL A COM922475108$211.5K2,368,2880.0%
Vail Resorts Inc(MTN)COM91879Q109$205.3K973,9980.0%
Teleflex Inc(TFX)COM879369106$203.2K786,1280.0%
Ishares TR(IWD)RUS 1000 VAL ETF464287598$187.9K1,692,0000.0%
Dominos Pizza Inc(DPZ)COM25754A201$186.1K750,6020.0%
Hdfc Bank LTD(HDB)ADR REPS 3 SHS40415F101$175.5K1,693,8800.0%
Amazon COM Inc(AMZN)COM023135106$174.7K116,2990.0%
Martin Marietta Matls Inc(MLM)COM573284106$173.8K1,011,0450.0%
Grand Canyon ED Inc(LOPE)COM38526M106$168.7K1,755,2060.0%
Healthcare Svcs GRP Inc(HCSG)COM421906108$167.5K4,168,2170.0%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$164.5K157,4100.0%
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