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William Blair Investment Management, LLC

Q2 2017 Holdings

Filed 2017-08-04 | 448 holdings | $2.0B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Alibaba Group Holding(BABA)ADR01609W102$1.0B7,188,01151.3%
Align Technology Inc(ALGN)COM016255101$227.0M1,511,92511.5%
Adobe Systems Inc(ADBE)COM00724F101$161.1M1,139,2678.2%
Acadia Healthcare Co Inc(ACHC)COM00404A109$105.1M2,128,9725.3%
Biomarin Pharmaceutical Inc(BMRN)COM09061G101$96.5M1,062,5064.9%
Carmax Inc(KMX)COM143130102$84.0M1,331,8364.3%
Costco Wholesale Corp(COST)COM22160K105$58.1M363,1532.9%
Biogen Inc(BIIB)COM09062X103$55.7M205,1072.8%
Boston Scientific Corp(BSX)COM101137107$42.5M1,533,4552.2%
Dana Inc(DAN)COM235825205$24.3M1,086,3221.2%
Conmed Corp(CNMD)COM207410101$22.0M432,8221.1%
Darling Ingredients Inc(DAR)COM237266101$18.2M1,156,0420.9%
Cavco Industries Inc(CVCO)COM149568107$17.9M137,7250.9%
Blue Bird Corp(BLBD)COM095306106$8.2M481,6080.4%
Codexis Inc(CDXS)COM192005106$5.9M1,090,0720.3%
Cryolife Inc(AORT)COM228903100$4.5M226,4090.2%
Apple Hospitality REIT Inc(APLE)COM03784Y200$2.1M114,6250.1%
Cadence Design SYS Inc(CDNS)COM127387108$707.0K21,1220.0%
Taiwan Semiconductor(TSM)ADR874039100$588.4K16,829,9730.0%
Akamai Technologies Inc(AKAM)COM00971T101$528.0K10,6000.0%
Spdr S&P 500 ETF Trust(SPY)ETF US78462F103$447.3K1,849,7240.0%
Costar Group Inc(CSGP)COM22160N109$382.7K1,451,6440.0%
Canadian Natl Railway Co(CNI)COM136375102$362.5K4,474,6420.0%
SBA Communications Corp(SBAC)COM78410G104$361.8K2,682,0910.0%
Copart Inc(CPRT)COM217204106$334.6K10,526,4630.0%
Ball Corp(BALL)COM058498106$322.7K7,644,1610.0%
Vantiv IncCOM92210H105$321.4K5,074,0660.0%
Alphabet Inc(GOOGL)COM02079K305$320.3K344,5680.0%
BWX Technologies Inc(BWXT)COM05605H100$319.1K6,544,7810.0%
Amazon.com Inc(AMZN)COM023135106$316.1K326,5460.0%
RED HAT IncCOM756577102$310.8K3,245,7890.0%
SIX Flags Entertainment Corp(SIXEUR)COM83001A102$304.5K5,108,8280.0%
Ishares Russell 1000 Value E(IWD)ETF US464287598$303.3K2,604,7000.0%
Microsoft Corp(MSFT)COM594918104$294.9K4,278,7610.0%
Guidewire Software Inc(GWRE)COM40171V100$294.5K4,286,6700.0%
Csra IncCOM12650T104$294.4K9,273,0030.0%
Check Point Software Tech(CHKP)COMM22465104$289.9K2,657,4050.0%
Zoetis Inc(ZTS)COM98978V103$284.6K4,562,7450.0%
Suncor Energy Inc(SU)COM867224107$275.6K9,447,9230.0%
J2 Global Inc(ZD)COM48123V102$265.0K3,114,7430.0%
Affiliated Managers Group(AMG)COM008252108$256.4K1,545,6430.0%
Booz Allen Hamilton Holdings(BAH)COM099502106$255.9K7,862,7780.0%
Vail Resorts Inc(MTN)COM91879Q109$255.7K1,260,4940.0%
Verisk Analytics Inc(VRSK)COM92345Y106$253.6K3,006,3490.0%
Old Dominion Freight Line(ODFL)COM679580100$250.1K2,625,6050.0%
Ctrip.com International(CTRPUSD)ADR22943F100$249.3K4,629,2410.0%
Netease Inc(NTES)ADR64110W102$246.7K820,7640.0%
Mastercard Inc(MA)COM57636Q104$246.5K2,029,8750.0%
Unitedhealth Group Inc(UNH)COM91324P102$242.0K1,305,2410.0%
Centene Corp(CNC)COM15135B101$239.7K3,001,1430.0%
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