WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Q4 2020 Filing

Filed February 9, 2021

Portfolio Value

$30.0B

Holdings

356

Report Date

Q4 2020

Filing Type

13F-HR

All Holdings (356 positions)

StockValue
TSMTAIWAN SEMICONDUCTOR MFG LTD
$1.3B
SPYSPDR S&P 500 ETF TR
$638.2M
MLB1MERCADOLIBRE INC
$577.8M
BWXTBWX TECHNOLOGIES INC
$445.3M
SESEA LTD
$414.8M
AMZNAMAZON COM INC
$392.6M
EHCENCOMPASS HEALTH CORP
$385.9M
HZNPHORIZON THERAPEUTICS PUB L
$384.3M
GKDGRAND CANYON ED INC
$380.0M
BCOBRINKS CO
$377.9M
MSFTMICROSOFT CORP
$374.1M
NSYNICE LTD
$361.9M
PSTGPURE STORAGE INC
$355.2M
ETSYETSY INC
$354.5M
CNRCANADIAN NATL RY CO
$351.7M
MLMMARTIN MARIETTA MATLS INC
$329.7M
TALTAL EDUCATION GROUP
$328.6M
CCKCROWN HLDGS INC
$309.8M
ALRMALARM COM HLDGS INC
$296.8M
EEFTEURONET WORLDWIDE INC
$290.5M
MRCYMERCURY SYS INC
$286.2M
GOOGLALPHABET INC
$285.1M
NBISYANDEX N V
$284.9M
LULULULULEMON ATHLETICA INC
$280.0M
RBAGBPRITCHIE BROS AUCTIONEERS
$276.8M
HALOHALOZYME THERAPEUTICS INC
$271.7M
TREXTREX CO INC
$265.3M
SEDGSOLAREDGE TECHNOLOGIES INC
$264.7M
BJBJS WHSL CLUB HLDGS INC
$264.6M
AZTABROOKS AUTOMATION INC NEW
$260.5M
VCYTVERACYTE INC
$254.9M
HQYHEALTHEQUITY INC
$254.7M
CABOCABLE ONE INC
$243.1M
PENPENUMBRA INC
$233.8M
LYVLIVE NATION ENTERTAINMENT IN
$233.8M
TECHBIO-TECHNE CORP
$232.1M
PODDINSULET CORP
$231.4M
RAMPLIVERAMP HLDGS INC
$231.0M
STESTERIS PLC
$228.8M
BLDRBUILDERS FIRSTSOURCE INC
$222.9M
AXONAXON ENTERPRISE INC
$221.6M
MAMASTERCARD INCORPORATED
$220.4M
AMEDAMEDISYS INC
$220.1M
HELEHELEN OF TROY LTD
$218.4M
PYPLPAYPAL HLDGS INC
$212.8M
BFAMBRIGHT HORIZONS FAM SOL IN D
$212.6M
AVLRUSDAVALARA INC
$212.4M
GDDYGODADDY INC
$210.8M
TEAMATLASSIAN CORP PLC
$209.4M
CCOCAMECO CORP
$206.5M
MDBMONGODB INC
$205.4M
AWNADVANCE AUTO PARTS INC
$204.9M
TFXTELEFLEX INCORPORATED
$203.2M
LGNDLIGAND PHARMACEUTICALS INC
$203.0M
VRNSVARONIS SYS INC
$202.6M
AZPNUSDASPEN TECHNOLOGY INC
$200.1M
GLOBGLOBANT S A
$198.4M
JXC1J2 GLOBAL INC
$197.7M
ZNGAEURZYNGA INC
$193.4M
GNRCGENERAC HLDGS INC
$190.7M
MMSIMERIT MED SYS INC
$188.0M
ABMDEURABIOMED INC
$183.7M
TXG10X GENOMICS INC
$181.6M
HDBHDFC BANK LTD
$177.6M
TDYTELEDYNE TECHNOLOGIES INC
$177.3M
EYENATIONAL VISION HLDGS INC
$176.2M
FSVFIRSTSERVICE CORP NEW
$174.8M
CREECREE INC
$174.4M
UNHUNITEDHEALTH GROUP INC
$173.6M
ARESARES MANAGEMENT CORPORATION
$173.4M
FIRSTCASH INC
$164.1M
ULTAULTA BEAUTY INC
$161.3M
NATINATIONAL INSTRS CORP
$158.6M
BURLBURLINGTON STORES INC
$158.3M
ZEN1EURZENDESK INC
$158.2M
TMETENCENT MUSIC ENTMT GROUP
$156.8M
GWREGUIDEWIRE SOFTWARE INC
$155.3M
VIRTVIRTU FINL INC
$154.5M
WEAWESTERN ALLIANCE BANCORP
$150.6M
ADBEADOBE SYSTEMS INCORPORATED
$150.0M
NKENIKE INC
$148.2M
ENQENTEGRIS INC
$147.4M
SERVUSDTERMINIX GLOBAL HOLDINGS INC
$144.0M
CRMSALESFORCE COM INC
$141.5M
LECOLINCOLN ELEC HLDGS INC
$141.5M
NFENEW FORTRESS ENERGY INC
$138.5M
ACHCACADIA HEALTHCARE COMPANY IN
$136.0M
BAHBOOZ ALLEN HAMILTON HLDG COR
$131.9M
PFPTPROOFPOINT INC
$127.9M
IM8NINSMED INC
$123.3M
CPRTCOPART INC
$120.7M
1GSNNOVANTA INC
$120.0M
3M4MASIMO CORP
$117.9M
ELLAUDER ESTEE COS INC
$116.1M
STAR PEAK ENERGY TRANSITION
$112.4M
HEIHEICO CORP NEW
$110.7M
BAPCREDICORP LTD
$110.6M
2L9BLUEPRINT MEDICINES CORP
$110.2M
TWSTTWIST BIOSCIENCE CORP
$106.1M
ZTSZOETIS INC
$105.5M
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