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William Blair Investment Management, LLC

Q1 2017 Holdings

Filed 2017-05-10 | 433 holdings | $1.8B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Alibaba Group Holding(BABA)ADR01609W102$819.9M7,603,56646.5%
Align Technology Inc(ALGN)COM016255101$180.5M1,573,60110.2%
Adobe Systems Inc(ADBE)COM00724F101$171.3M1,315,9939.7%
Akamai Technologies Inc(AKAM)COM00971T101$132.1M2,212,9117.5%
Biomarin Pharmaceutical Inc(BMRN)COM09061G101$98.7M1,123,9285.6%
Biogen Inc(BIIB)COM09062X103$80.1M293,0474.5%
Costco Wholesale Corp(COST)COM22160K105$79.2M472,1924.5%
Carmax Inc(KMX)COM143130102$47.4M799,8992.7%
Boston Scientific Corp(BSX)COM101137107$38.5M1,550,0252.2%
Dana Inc(DAN)COM235825205$21.6M1,120,8671.2%
Conmed Corp(CNMD)COM207410101$19.3M435,5181.1%
Cavco Industries Inc(CVCO)COM149568107$19.1M164,1661.1%
Darling Ingredients Inc(DAR)COM237266101$17.2M1,182,1791.0%
Acadia Healthcare Co Inc(ACHC)COM00404A109$6.9M158,0070.4%
Codexis Inc(CDXS)COM192005106$4.7M986,8390.3%
Cadence Design SYS Inc(CDNS)COM127387108$760.0K24,2190.0%
Taiwan Semiconductor(TSM)ADR874039100$580.2K17,666,6830.0%
Spdr S&P 500 ETF Trust(SPY)ETF US78462F103$470.6K1,996,4240.0%
Vantiv IncCOM92210H105$370.0K5,769,7890.0%
Copart Inc(CPRT)COM217204106$340.6K5,500,5450.0%
Costar Group Inc(CSGP)COM22160N109$336.1K1,621,9630.0%
Amazon.com Inc(AMZN)COM023135106$316.5K357,0490.0%
SIX Flags Entertainment Corp(SIXEUR)COM83001A102$313.6K5,271,6440.0%
RED HAT IncCOM756577102$306.6K3,544,1510.0%
Alphabet Inc(GOOGL)COM02079K305$302.1K356,3820.0%
Ishares Russell 1000 Value E(IWD)ETF US464287598$301.0K2,619,0000.0%
SBA Communications Corp(SBAC)COM78410G104$296.9K2,466,3820.0%
Microsoft Corp(MSFT)COM594918104$291.6K4,427,2820.0%
Tractor Supply Company(TSCO)COM892356106$282.7K4,098,4280.0%
Csra IncCOM12650T104$278.7K9,515,7240.0%
BWX Technologies Inc(BWXT)COM05605H100$278.6K5,853,7460.0%
Booz Allen Hamilton Holdings(BAH)COM099502106$274.7K7,762,8740.0%
Maximus Inc(MMS)COM577933104$274.7K4,416,2790.0%
Suncor Energy Inc(SU)COM867224107$269.2K8,794,1690.0%
Check Point Software Tech(CHKP)COMM22465104$262.9K2,560,8340.0%
Affiliated Managers Group(AMG)COM008252108$259.6K1,583,4150.0%
Ball Corp(BALL)COM058498106$259.4K3,492,6130.0%
Zoetis Inc(ZTS)COM98978V103$257.4K4,823,7460.0%
Vail Resorts Inc(MTN)COM91879Q109$251.9K1,312,4630.0%
Guidewire Software Inc(GWRE)COM40171V100$247.3K4,389,7630.0%
Signature Bank(SBNY)COM82669G104$247.2K1,665,9360.0%
Canadian Natl Railway Co(CNI)COM136375102$244.6K3,322,1470.0%
Centene Corp(CNC)COM15135B101$241.7K3,391,9550.0%
O'reilly Automotive Inc(ORLY)COM67103H107$236.0K874,5070.0%
Mastercard Inc(MA)COM57636Q104$235.6K2,095,1100.0%
Veeva Systems Inc(VEEV)COM922475108$224.4K4,376,5160.0%
Credicorp LTD(BAP)COMG2519Y108$223.7K1,369,8940.0%
Facebook Inc(META)COM30303M102$221.2K1,556,9740.0%
Verisk Analytics Inc(VRSK)COM92345Y106$221.0K2,723,6630.0%
Intercontinental Exchange in(ICE)COM45866F104$220.8K3,688,5010.0%
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