WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Q1 2021 Filing

Filed May 13, 2021

Portfolio Value

$30.9B

Holdings

367

Report Date

Q1 2021

Filing Type

13F-HR

All Holdings (367 positions)

StockValue
TSMTAIWAN SEMICONDUCTOR MFG LTD
$1.2B
SPYSPDR S&P 500 ETF TR
$565.3M
BWXTBWX TECHNOLOGIES INC
$492.0M
MSFTMICROSOFT CORP
$454.2M
CNRCANADIAN NATL RY CO
$442.8M
GKDGRAND CANYON ED INC
$439.3M
BCOBRINKS CO
$422.5M
MLB1MERCADOLIBRE INC
$404.9M
AMZNAMAZON COM INC
$389.3M
HZNPHORIZON THERAPEUTICS PUB L
$381.9M
EHCENCOMPASS HEALTH CORP
$376.7M
GOOGLALPHABET INC
$336.1M
CCKCROWN HLDGS INC
$334.1M
PSTGPURE STORAGE INC
$333.0M
MLMMARTIN MARIETTA MATLS INC
$329.9M
SESEA LTD
$323.0M
AZTABROOKS AUTOMATION INC NEW
$317.5M
TECHBIO-TECHNE CORP
$315.6M
BJBJS WHSL CLUB HLDGS INC
$304.9M
ABMDEURABIOMED INC
$298.7M
TREXTREX CO INC
$290.9M
EEFTEURONET WORLDWIDE INC
$290.3M
CRLCHARLES RIV LABS INTL INC
$287.6M
ACHCACADIA HEALTHCARE COMPANY IN
$274.5M
GNRCGENERAC HLDGS INC
$270.2M
MAMASTERCARD INCORPORATED
$268.8M
BFAMBRIGHT HORIZONS FAM SOL IN D
$265.9M
LYVLIVE NATION ENTERTAINMENT IN
$265.3M
NSYNICE LTD
$264.8M
CCOCAMECO CORP
$259.6M
HQYHEALTHEQUITY INC
$257.9M
BLDRBUILDERS FIRSTSOURCE INC
$257.1M
AXONAXON ENTERPRISE INC
$256.0M
NBISYANDEX N V
$251.2M
VCYTVERACYTE INC
$247.0M
JXC1J2 GLOBAL INC
$241.8M
LULULULULEMON ATHLETICA INC
$238.6M
ETSYETSY INC
$238.6M
PENPENUMBRA INC
$234.5M
RBAGBPRITCHIE BROS AUCTIONEERS
$234.4M
MRCYMERCURY SYS INC
$230.9M
ALRMALARM COM HLDGS INC
$228.8M
RYAAYRYANAIR HOLDINGS PLC
$226.8M
AZPNUSDASPEN TECHNOLOGY INC
$223.3M
WEAWESTERN ALLIANCE BANCORP
$222.9M
HALOHALOZYME THERAPEUTICS INC
$222.5M
VIRTVIRTU FINL INC
$220.4M
BURLBURLINGTON STORES INC
$219.9M
PYPLPAYPAL HLDGS INC
$212.8M
TALTAL EDUCATION GROUP
$210.4M
MMSIMERIT MED SYS INC
$208.2M
TXG10X GENOMICS INC
$208.1M
ARESARES MANAGEMENT CORPORATION
$207.7M
PODDINSULET CORP
$207.5M
HDBHDFC BANK LTD
$206.2M
AWNADVANCE AUTO PARTS INC
$204.5M
UNHUNITEDHEALTH GROUP INC
$202.0M
ZNGAEURZYNGA INC
$200.8M
CABOCABLE ONE INC
$199.9M
DTDYNATRACE INC
$199.6M
AMEDAMEDISYS INC
$198.2M
GDDYGODADDY INC
$197.3M
LGNDLIGAND PHARMACEUTICALS INC
$196.9M
VRNSVARONIS SYS INC
$192.0M
FSVFIRSTSERVICE CORP NEW
$190.9M
HELEHELEN OF TROY LTD
$188.9M
NATIONAL INSTRS CORP
$184.4M
ZEN1EURZENDESK INC
$184.4M
TEAMATLASSIAN CORP PLC
$182.1M
GLOBGLOBANT S A
$181.6M
SERVUSDTERMINIX GLOBAL HOLDINGS INC
$174.4M
ENQENTEGRIS INC
$172.3M
EYENATIONAL VISION HLDGS INC
$172.1M
AVLRUSDAVALARA INC
$171.4M
TFXTELEFLEX INCORPORATED
$168.0M
RAMPLIVERAMP HLDGS INC
$162.2M
NFENEW FORTRESS ENERGY INC
$158.6M
TMETENCENT MUSIC ENTMT GROUP
$158.5M
CREE INC
$156.2M
LECOLINCOLN ELEC HLDGS INC
$152.7M
FIRSTCASH INC
$152.3M
ADBEADOBE SYSTEMS INCORPORATED
$144.3M
NKENIKE INC
$142.2M
LESLIES INC
$141.6M
STAR PEAK ENERGY TRANSITION
$141.3M
ELLAUDER ESTEE COS INC
$137.8M
CRMSALESFORCE COM INC
$135.4M
1GSNNOVANTA INC
$135.0M
INSPINSPIRE MED SYS INC
$133.1M
CERTCERTARA INC
$132.1M
GWREGUIDEWIRE SOFTWARE INC
$130.0M
IM8NINSMED INC
$128.2M
PFPTPROOFPOINT INC
$117.6M
PEGAPEGASYSTEMS INC
$112.2M
ZTSZOETIS INC
$112.1M
FISFIDELITY NATL INFORMATION SV
$111.3M
TXNTEXAS INSTRS INC
$108.5M
HEIHEICO CORP NEW
$107.2M
WKWORKIVA INC
$103.6M
CPRTCOPART INC
$103.3M
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