WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Q3 2020 Filing

Filed November 6, 2020

Portfolio Value

$25.7B

Holdings

343

Report Date

Q3 2020

Filing Type

13F-HR

All Holdings (343 positions)

StockValue
TSMTAIWAN SEMICONDUCTOR MFG LTD
$1.1B
SPYSPDR S&P 500 ETF TR
$621.4M
HZNPHORIZON THERAPEUTICS PUB L
$454.7M
AMZNAMAZON COM INC
$428.1M
BWXTBWX TECHNOLOGIES INC
$423.0M
MLB1MERCADOLIBRE INC
$373.1M
TALTAL EDUCATION GROUP
$362.1M
CNRCANADIAN NATL RY CO
$357.5M
SESEA LTD
$330.1M
GKDGRAND CANYON ED INC
$324.2M
MSFTMICROSOFT CORP
$309.0M
EHCENCOMPASS HEALTH CORP
$303.8M
NSYNICE LTD
$297.2M
LULULULULEMON ATHLETICA INC
$277.8M
BJBJS WHSL CLUB HLDGS INC
$277.4M
MLMMARTIN MARIETTA MATLS INC
$276.9M
NBISYANDEX N V
$275.0M
TREXTREX CO INC
$274.9M
GOOGLALPHABET INC
$262.3M
IRTCIRHYTHM TECHNOLOGIES INC
$255.1M
PSTGPURE STORAGE INC
$248.3M
RBAGBPRITCHIE BROS AUCTIONEERS
$247.5M
SEDGSOLAREDGE TECHNOLOGIES INC
$246.2M
ETSYETSY INC
$245.9M
CCKCROWN HLDGS INC
$241.5M
PENPENUMBRA INC
$238.6M
MAMASTERCARD INCORPORATED
$236.2M
BFAMBRIGHT HORIZONS FAM SOL IN D
$235.0M
ZNGAEURZYNGA INC
$230.6M
EXASEXACT SCIENCES CORP
$223.0M
PODDINSULET CORP
$221.6M
STESTERIS PLC
$218.4M
MRCYMERCURY SYS INC
$213.9M
CABOCABLE ONE INC
$211.9M
AWNADVANCE AUTO PARTS INC
$211.1M
PYPLPAYPAL HLDGS INC
$209.0M
GNRCGENERAC HLDGS INC
$206.1M
AZPNUSDASPEN TECHNOLOGY INC
$199.4M
BCOBRINKS CO
$198.8M
GLOBGLOBANT S A
$196.2M
BAHBOOZ ALLEN HAMILTON HLDG COR
$192.4M
GDDYGODADDY INC
$191.8M
TDYTELEDYNE TECHNOLOGIES INC
$188.1M
HQYHEALTHEQUITY INC
$187.5M
EEFTEURONET WORLDWIDE INC
$185.3M
VCYTVERACYTE INC
$184.6M
LGNDLIGAND PHARMACEUTICALS INC
$180.7M
ADBEADOBE SYSTEMS INCORPORATED
$179.8M
TFXTELEFLEX INCORPORATED
$179.8M
AMEDAMEDISYS INC
$179.7M
LYVLIVE NATION ENTERTAINMENT IN
$178.3M
AZTABROOKS AUTOMATION INC NEW
$178.0M
UNHUNITEDHEALTH GROUP INC
$177.5M
HELEHELEN OF TROY LTD
$176.2M
FSVFIRSTSERVICE CORP NEW
$176.2M
EYENATIONAL VISION HLDGS INC
$176.1M
TEAMATLASSIAN CORP PLC
$174.7M
HALOHALOZYME THERAPEUTICS INC
$171.4M
TRUTRANSUNION
$166.2M
AVLRUSDAVALARA INC
$165.7M
ALRMALARM COM HLDGS INC
$163.9M
ABMDEURABIOMED INC
$157.4M
AXONAXON ENTERPRISE INC
$157.3M
CCOCAMECO CORP
$155.8M
NKENIKE INC
$152.9M
ARESARES MANAGEMENT CORPORATION
$151.0M
CRMSALESFORCE COM INC
$149.2M
VRNSVARONIS SYS INC
$148.1M
VIRTVIRTU FINL INC
$143.1M
JXC1J2 GLOBAL INC
$142.1M
GWREGUIDEWIRE SOFTWARE INC
$139.4M
ULTAULTA BEAUTY INC
$139.1M
MDBMONGODB INC
$138.2M
RAMPLIVERAMP HLDGS INC
$136.7M
FIRSTCASH INC
$131.9M
NATIONAL INSTRS CORP
$130.5M
CREE INC
$128.9M
BURLBURLINGTON STORES INC
$128.9M
FISFIDELITY NATL INFORMATION SV
$125.5M
ZTSZOETIS INC
$122.6M
TMETENCENT MUSIC ENTMT GROUP
$122.4M
CPRTCOPART INC
$119.8M
HDBHDFC BANK LTD
$117.3M
ENQENTEGRIS INC
$117.2M
BAMBROOKFIELD ASSET MGMT INC
$111.5M
LECOLINCOLN ELEC HLDGS INC
$111.2M
BLDRBUILDERS FIRSTSOURCE INC
$108.0M
1GSNNOVANTA INC
$106.5M
ELLAUDER ESTEE COS INC
$106.0M
3M4MASIMO CORP
$105.1M
CSGPCOSTAR GROUP INC
$102.8M
MMSMAXIMUS INC
$101.7M
PFPTPROOFPOINT INC
$100.1M
ICLRICON PLC
$97.4M
METAFACEBOOK INC
$94.8M
WDAYWORKDAY INC
$91.7M
AMDADVANCED MICRO DEVICES INC
$90.9M
TXNTEXAS INSTRS INC
$89.4M
HEIHEICO CORP NEW
$84.7M
LWLAMB WESTON HLDGS INC
$82.9M
Page 1 of 4Next