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13F-HR filed by WESTFIELD CAPITAL MANAGEMENT CO LP

WESTFIELD CAPITAL MANAGEMENT CO LP filed this 13F-HR for the quarter ended 2021-06-30, filed 2021-08-10, with 241 holding rows worth $16,697,140,000.

Accession
0001085146-21-002369
Filed
2021-08-10
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q2 2021

A holdings report, 241 entries on the cover page, a total value of $16,697,140,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $16,697,140,000 with VALUE read as thousands by filing date, 13F file number 028-10220. The quarter's positions are built on this report. The resolved quarter.

The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).

Issuer as filedCUSIPClassAmountValueValue read asType
Apple Inc037833100COM4,753,355$651,020,000thousands by filing date
Amazon.com, Inc023135106COM140,930$484,822,000thousands by filing date
Alphabet Inc. Reg. Shares A02079K305COM187,229$457,174,000thousands by filing date
Microsoft Corp594918104COM1,685,002$456,467,000thousands by filing date
META PLATFORMS INC CL A30303M102COM978,843$340,353,000thousands by filing date
ZENDESK INC98936J101COM2,105,757$303,945,000thousands by filing date
ICON PUB LTD CO SHSG4705A100Stock1,306,581$270,083,000thousands by filing date
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR2,015,927$265,195,000thousands by filing date
BIO RAD LABS INC090572207CL A406,272$261,757,000thousands by filing date
Visa Inc92826C839COM1,082,954$253,216,000thousands by filing date
TRANSDIGM GROUP INC COM893641100Stock359,660$232,804,000thousands by filing date
TRANE TECHNOLOGIES PLC SHSG8994E103Stock1,005,559$185,164,000thousands by filing date
Salesforce.com, Inc79466L302COM756,327$184,748,000thousands by filing date
ServiceNow,Inc.81762P102COM332,822$182,902,000thousands by filing date
PAYPALHLDGSINC70450Y103STOK609,372$177,620,000thousands by filing date
Thermo Fisher Scientific Inc.883556102COM349,428$176,276,000thousands by filing date
AMETEK INC COM031100100Stock1,319,697$176,180,000thousands by filing date
ADVANCED DRAIN SYS INC DEL COM00790R104Stock1,441,422$168,027,000thousands by filing date
TAPESTRY INC COM876030107Stock3,848,802$167,346,000thousands by filing date
WORKDAY INC CL A98138H101Stock638,317$152,392,000thousands by filing date
HUBSPOTINC443573100STOK260,726$151,930,000thousands by filing date
Union Pacific Corporation907818108COM686,501$150,982,000thousands by filing date
DARDEN RESTAURANTS INC COM237194105Stock1,033,589$150,894,000thousands by filing date
NATIONAL VISION HLDGS INC COM63845R107Stock2,896,172$148,081,000thousands by filing date
WESTERN DIGITAL CORP958102105COM1,988,655$141,533,000thousands by filing date
MICROCHIP TECHNOLOGY INC. COM595017104Stock936,069$140,167,000thousands by filing date
LPL FINL HLDGS INC COM50212V100Stock985,164$132,977,000thousands by filing date
GLOBAL PMTS INC37940X102COM701,587$131,576,000thousands by filing date
MGM RESORTS INTERNATIONAL552953101COM3,044,296$129,839,000thousands by filing date
QUEST DIAGNOSTICS INC COM74834L100Stock978,310$129,108,000thousands by filing date
HUMANA INC COM444859102Stock289,882$128,337,000thousands by filing date
Costco Wholesale Corporation22160K105COM320,503$126,813,000thousands by filing date
NVIDIA Corp67066G104COM158,145$126,532,000thousands by filing date
HEXCEL CORP NEW428291108COM2,017,222$125,875,000thousands by filing date
CHIPOTLEMEXICANGRILLI169656105STOK79,583$123,381,000thousands by filing date
NICE LTD SPONSORED ADR653656108ADR488,514$120,888,000thousands by filing date
Morgan Stanley617446448COM1,297,290$118,949,000thousands by filing date
ZYNGA INC.98986T108CL A11,160,925$118,641,000thousands by filing date
TREX CO INC89531P105COM1,157,360$118,294,000thousands by filing date
IDEX CORP COM45167R104Stock533,968$117,500,000thousands by filing date
TRANSUNION COM89400J107Stock1,059,654$116,361,000thousands by filing date
INSULET CORP COM45784P101Stock412,329$113,188,000thousands by filing date
FMC CORP COM NEW302491303Stock1,025,873$110,999,000thousands by filing date
Intuit Inc.461202103COM223,827$109,713,000thousands by filing date
FIDELITY NATL INFORMATION SVCS COM31620M106Stock758,447$107,449,000thousands by filing date
ACCELERON PHARMA INC00434H108COM855,644$107,375,000thousands by filing date
TARGET CORP COM87612E106Stock437,098$105,664,000thousands by filing date
SYNCHRONYFINL87165B103STOK2,171,790$105,375,000thousands by filing date
Applied Materials,Inc.038222105COM736,971$104,945,000thousands by filing date
BLUEPRINT MEDICINES CORP09627Y109COM1,180,119$103,803,000thousands by filing date
FIVE BELOW INC COM33829M101Stock524,243$101,320,000thousands by filing date
TELEDYNE TECHNOLOGIES INC COM879360105Stock240,564$100,755,000thousands by filing date
FORTINET INC COM34959E109Stock419,707$99,970,000thousands by filing date
DOUGLAS EMMETT INC25960P109COM2,973,432$99,967,000thousands by filing date
OAK STR HEALTH INC67181A107COM1,698,494$99,481,000thousands by filing date
ATKORE INC047649108COMMON STOCK1,394,441$99,005,000thousands by filing date
TWILIO INC CL A90138F102Stock248,251$97,851,000thousands by filing date
AMERICAN FINANCIAL GROUP INC COM025932104Stock760,691$94,873,000thousands by filing date
SILICON MOTION TECHNOLOGY CORP SPONSORED ADR82706C108ADR1,478,232$94,755,000thousands by filing date
ROCKET PHARMACEUTICALS INC77313F106COM2,077,095$91,995,000thousands by filing date
WEX INC96208T104COM469,648$91,065,000thousands by filing date
IDEXX LABS INC COM45168D104Stock141,576$89,412,000thousands by filing date
LIVE NATION ENTERTAINMENT INC COM538034109Stock1,019,859$89,329,000thousands by filing date
SAIA INC78709Y105COM421,945$88,393,000thousands by filing date
COPART INC COM217204106Stock653,727$86,181,000thousands by filing date
CATALENT INC USD 0.01148806102COM780,487$84,386,000thousands by filing date
LINCOLN ELEC HLDGS INC533900106COM638,805$84,137,000thousands by filing date
DEXCOM INC COM252131107Stock196,234$83,792,000thousands by filing date
CELANESE CORP DEL COM150870103Stock548,079$83,089,000thousands by filing date
LUMENTUM HLDGS INC COM55024U109Stock1,009,035$82,771,000thousands by filing date
MSCI INC COM55354G100Stock153,999$82,094,000thousands by filing date
SEAGEN INC81181C104COM514,590$81,243,000thousands by filing date
PALO ALTO NETWORKS INC697435105COM217,849$80,833,000thousands by filing date
IRONWOOD PHARMACEUTICALS INC46333X108COMMON STOCK6,258,873$80,552,000thousands by filing date
GALLAGHER ARTHUR J & CO COM363576109Stock566,036$79,290,000thousands by filing date
DEVON ENERGY CORP NEW COM25179M103Stock2,711,373$79,145,000thousands by filing date
Boston Scientific Corporation101137107COM1,839,743$78,667,000thousands by filing date
TOPBUILD COR COM89055F103Stock394,998$78,123,000thousands by filing date
ROSS STORES INC COM778296103Stock627,760$77,842,000thousands by filing date
LIGHTSPEED POS INC53227R106SUB VTG SHS929,894$77,748,000thousands by filing date
AZEK CO INC05478C105CL A1,819,598$77,260,000thousands by filing date
ROKU INC COM CL A77543R102Stock167,556$76,950,000thousands by filing date
ROCKWELL AUTOMATION INC COM773903109Stock264,980$75,790,000thousands by filing date
ALIGN TECHNOLOGY INC COM016255101Stock121,083$73,982,000thousands by filing date
BRP INC COM SUN VTG05577W200Stock935,490$73,305,000thousands by filing date
Micron Technology,Inc.595112103COM849,870$72,222,000thousands by filing date
NUTANIX INC CL A67059N108Stock1,882,254$71,940,000thousands by filing date
ULTA BEAUTY INC COM90384S303Stock204,886$70,843,000thousands by filing date
TURNING PT THERAPEUTICS90041T108COM907,760$70,823,000thousands by filing date
FLEETCOR TECHNOLOGIES INC339041105COM266,520$68,245,000thousands by filing date
XILINX INC983919101COM467,661$67,642,000thousands by filing date
BIOGEN INC COM09062X103Stock191,842$66,429,000thousands by filing date
SPLUNK INC848637104COM457,022$66,076,000thousands by filing date
ITT INC COM45073V108Stock706,929$64,748,000thousands by filing date
SPIRIT RLTY CAP INC NEW NPV84860W300COM NEW1,351,027$64,633,000thousands by filing date
GARTNERINC366651107STOK266,026$64,431,000thousands by filing date
MKS INC. COM55306N104Stock358,003$63,707,000thousands by filing date
ESSEX PPTY TR INC COM297178105REIT212,333$63,702,000thousands by filing date
TG THERAPEUTICS INC COM88322Q108Stock1,639,676$63,603,000thousands by filing date
PACIRA BIOSCIENCES INC COM695127100Stock1,030,645$62,540,000thousands by filing date
F5 INC COM315616102Stock324,634$60,596,000thousands by filing date
METTLER TOLEDO INTERNATIONAL COM592688105Stock43,627$60,438,000thousands by filing date
LYFT INC55087P104CL A COM990,134$59,883,000thousands by filing date
NEUROCRINE BIOSCIENCES INC64125C109COM614,993$59,851,000thousands by filing date
PAYLOCITY HLDG CORP COM70438V106Stock313,623$59,839,000thousands by filing date
PACIFIC BIOSCIENCES CALIF INC COM69404D108Stock1,684,958$58,923,000thousands by filing date
NIKE,Inc. Class B654106103COM374,083$57,792,000thousands by filing date
TIMKEN CO887389104COM708,662$57,111,000thousands by filing date
AVALARA INC05338G106COM349,180$56,497,000thousands by filing date
JUNIPER NETWORKS INC48203R104COM2,055,224$56,210,000thousands by filing date
WILLIAMS SONOMA INC COM969904101Stock351,228$56,074,000thousands by filing date
TAKE-TWO INTERACTIVE SOFTWARE COM874054109Stock314,956$55,754,000thousands by filing date
T-Mobile US,Inc.872590104COM384,613$55,704,000thousands by filing date
FOX CORP CL A COM35137L105Stock1,496,281$55,557,000thousands by filing date
FIRST CTZNS BANCSHARES INC DEL CL A31946M103Stock66,095$55,040,000thousands by filing date
SENSATA TECHNOLOGIES HLDG PLg8060n102SHS925,134$53,630,000thousands by filing date
THE COOPER COMPANIES216648402COM NEW134,731$53,390,000thousands by filing date
FREEPORT MCMORAN INC CL B35671D857Stock1,430,723$53,094,000thousands by filing date
HAEMONETICS CORP MASS COM405024100Stock793,986$52,911,000thousands by filing date
CIRRUS LOGIC INC COM172755100Stock614,342$52,293,000thousands by filing date
ConocoPhillips20825C104COM853,093$51,953,000thousands by filing date
BIOMARIN PHARMACEUTICAL INC09061G101COM619,088$51,657,000thousands by filing date
PEGASYSTEMS INC COM705573103Stock370,864$51,621,000thousands by filing date
COGENT COMMUNICATIONS GROUP19239V302COM NEW646,911$49,741,000thousands by filing date
EXPEDIA GROUP INC COM NEW30212P303Stock303,453$49,678,000thousands by filing date
TERADYNE INC COM880770102Stock358,564$48,033,000thousands by filing date
Tesla Motors, Inc88160R101COM69,775$47,426,000thousands by filing date
WASTE CONNECTIONS INC COM94106B101Stock390,309$46,615,000thousands by filing date
NEWMONT CORP651639106COM732,040$46,397,000thousands by filing date
DIAMONDBACK ENERGY INC COM25278X109Stock480,399$45,105,000thousands by filing date
NOVAVAX INC670002401COM NEW203,500$43,205,000thousands by filing date
Q2 HLDGS INC COM74736L109Stock414,254$42,494,000thousands by filing date
BLACK KNIGHT INC COM09215C105Stock543,581$42,388,000thousands by filing date
LAMAR ADVERTISING CO CL A512816109REIT405,743$42,368,000thousands by filing date
SIGNATURE BANK82669G104COM172,311$42,328,000thousands by filing date
COGNIZANT TECHNOLOGY SOLUTIONS CL A192446102Stock607,449$42,072,000thousands by filing date
REVOLVE GROUP INC CL A76156B107Stock600,142$41,350,000thousands by filing date
INNOVIVA INC45781M101COM3,070,409$41,174,000thousands by filing date
CHURCHILL DOWNS INC171484108COM204,221$40,489,000thousands by filing date
AMEDISYS INC023436108COM164,481$40,286,000thousands by filing date
SHIFT4 PMTS INC CL A82452J109Stock425,534$39,881,000thousands by filing date
ADVANCED ENERGY INDS COM007973100Stock347,601$39,178,000thousands by filing date
TANDEM DIABETES CARE INC875372203COM NEW395,981$38,569,000thousands by filing date
MIMECAST LIMITEDG14838109ORD SHS726,342$38,532,000thousands by filing date
CHEESECAKE FACTORY INC163072101COM685,150$37,121,000thousands by filing date
PAYA HOLDINGS INC70434P103COM CL A3,275,065$36,091,000thousands by filing date
INVITAE CORP46185L103COM1,030,676$34,765,000thousands by filing date
OPTION CARE HEALTH INC COM NEW68404L201Stock1,556,045$34,031,000thousands by filing date
PRIMERICA INC74164M108COM218,942$33,529,000thousands by filing date
BERRY GLOBAL GROUP INC08579W103COM507,522$33,101,000thousands by filing date
PS BUSINESS PKS INC CALIF69360J107COM216,746$32,096,000thousands by filing date
AVIENT CORPORATION05368V106COM651,462$32,026,000thousands by filing date
AMERICAN ASSETS TR INC COM024013104REIT855,459$31,900,000thousands by filing date
SYNAPTICS INC COM87157D109Stock203,433$31,650,000thousands by filing date
WNS HOLDINGS LTD92932M101SPON ADR369,733$29,531,000thousands by filing date
Mersana Therapeutics Inc59045L106Common Stock2,108,810$28,638,000thousands by filing date
RANPAK HOLDINGS CORP75321W103COMMON STOCK1,143,441$28,620,000thousands by filing date
PLAYA HOTELS & RESORTS NVN70544106SHS3,840,633$28,536,000thousands by filing date
COGNYTE SOFTWARE LTDM25133105ORD SHS1,157,706$28,364,000thousands by filing date
BRIDGEBIO PHARMA INC10806X102COM457,540$27,892,000thousands by filing date
SMARTSHEET INC. (CLASS A)83200N103COM CL A384,603$27,814,000thousands by filing date
PDC ENERGY INC69327R101COM607,327$27,810,000thousands by filing date
INSMED INC COM PAR $.01457669307Stock967,079$27,523,000thousands by filing date
MERITOR INC59001K100COMMON STOCK1,174,946$27,517,000thousands by filing date
HORIZON THERAPEUTICS PLCG46188101SHS293,016$27,438,000thousands by filing date
THE BALDWIN INSURANCE GRP IN05589G102COM CL A1,005,283$26,791,000thousands by filing date
FATE THERAPEUTICS INC31189P102COM301,651$26,180,000thousands by filing date
BLACKLINE, INC.09239B109COM216,921$24,137,000thousands by filing date
SMART GLOBAL HLDGS INCG8232Y101COM505,567$24,105,000thousands by filing date
MSA SAFETY INC COM553498106Stock136,723$22,639,000thousands by filing date
PALOMAR HLDGS INC COM69753M105Stock294,304$22,208,000thousands by filing date
NCR VOYIX CORPORATION62886E108COM471,256$21,494,000thousands by filing date
Broadcom Inc.11135F101COM40,425$19,276,000thousands by filing date
EVERPURE INC CL A74624M102Stock980,648$19,152,000thousands by filing date
CINTAS CORP COM172908105Stock47,850$18,279,000thousands by filing date
Home Depot, Inc437076102COM56,378$17,978,000thousands by filing date
2U INC90214J101COM428,719$17,865,000thousands by filing date
ENPHASE ENERGY INC COM29355A107Stock94,077$17,275,000thousands by filing date
OLD DOMINION FREIGHT LINE INC COM679580100Stock67,946$17,245,000thousands by filing date
AXALTA COATING SYS LTD COMG0750C108Stock541,453$16,509,000thousands by filing date
NKARTA INC65487U108COMMON STOCK474,462$15,036,000thousands by filing date
ILLINOIS TOOL WKS INC452308109COM57,967$12,959,000thousands by filing date
Alphabet Inc. Reg. Shares C02079K107COM4,904$12,291,000thousands by filing date
UPWORK INC91688F104COM202,513$11,804,000thousands by filing date
AbbVie,Inc.00287Y109COM101,611$11,445,000thousands by filing date
MISTER CAR WASH INC60646V105COM464,809$10,007,000thousands by filing date
Danaher Corporation235851102COM32,771$8,794,000thousands by filing date
Comcast Corp20030N101COM152,959$8,722,000thousands by filing date
LAM RESEARCH CORP512807108COM13,185$8,579,000thousands by filing date
Caterpillar Inc.149123101COM39,235$8,539,000thousands by filing date
CHEMOURS CO COM163851108Stock212,415$7,392,000thousands by filing date
PRICE T ROWE GROUP INC COM74144T108Stock37,325$7,389,000thousands by filing date
FAIR ISAAC CORP COM303250104Stock14,591$7,335,000thousands by filing date
ALEXANDRIA REAL ESTATE EQ INC COM015271109REIT38,620$7,027,000thousands by filing date
Cisco Systems,Inc.17275R102COM130,760$6,930,000thousands by filing date
BLACKROCK INC CL A COM09247X101COM7,830$6,851,000thousands by filing date
SUN CMNTYS INC COM866674104REIT39,550$6,779,000thousands by filing date
HUNTSMAN CORP447011107COM244,125$6,474,000thousands by filing date
Bristol-Myers Squibb Company110122108COM95,520$6,383,000thousands by filing date
PepsiCo,Inc.713448108COM42,250$6,260,000thousands by filing date
BHP BILLITON LIMITED SPONSORED ADS088606108ADR85,915$6,257,000thousands by filing date
COSTAR GROUP INC COM22160N109Stock74,850$6,199,000thousands by filing date
Coca-Cola Company191216100COM112,255$6,074,000thousands by filing date
HARTFORD INSURANCE GROUP INC COM416515104Stock96,195$5,961,000thousands by filing date
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock37,450$5,509,000thousands by filing date
AVERY DENNISON CORP COM053611109Stock25,813$5,427,000thousands by filing date
3M CO COM88579Y101Stock26,925$5,348,000thousands by filing date
CVS Health Corporation126650100COM63,265$5,279,000thousands by filing date
CMC MATERIALS INC12571T100COM34,227$5,159,000thousands by filing date
VALERO ENERGY CORP COM91913Y100Stock61,540$4,805,000thousands by filing date
RAYMOND JAMES FINL INC COM754730109Stock26,730$3,472,000thousands by filing date
CONSTELLATION BRANDS INC CL A21036P108Stock11,889$2,781,000thousands by filing date
VAIL RESORTS INC COM91879Q109Stock8,694$2,752,000thousands by filing date
HEICO CORP NEW422806208CL A20,130$2,500,000thousands by filing date
SCIENCE APPLICATIONS INTL CORP COM808625107Stock24,770$2,173,000thousands by filing date
S&P Global,Inc.78409V104COM4,974$2,042,000thousands by filing date
Walt Disney Co254687106COM7,931$1,394,000thousands by filing date
Starbucks Corporation855244109COM10,840$1,212,000thousands by filing date
JPMorgan Chase & Co46625H100COM6,300$980,000thousands by filing date
CSX Corporation126408103COM28,590$917,000thousands by filing date
ESSENTIAL PPTYS RLTY TR INC COM29670E107REIT31,900$863,000thousands by filing date
PERELLA WEINBERG PARTNERS71367G102COMMON STOCK64,280$827,000thousands by filing date
International Business Machines Corporation459200101COM5,540$812,000thousands by filing date
METROPOLITAN BANK HOLDING CO591774104COMMON STOCK12,700$765,000thousands by filing date
iShares Silver Trust46428Q109COM29,120$705,000thousands by filing date
ECHOSTAR CORP278768106CL A28,210$685,000thousands by filing date
HOWARD HUGHES CORPORATION44267D107COMMON STOCK6,700$653,000thousands by filing date
NXP SEMICONDUCTORS N V COMN6596X109Stock3,131$644,000thousands by filing date
WILLIAMS COS INC COM969457100Stock23,330$619,000thousands by filing date
TERRENO RLTY CORP88146M101COM8,840$570,000thousands by filing date
BUNGE LTDG16962105COM7,250$567,000thousands by filing date
APTIV PLCG6095L109SHS3,400$535,000thousands by filing date
CASEYS GEN STORES INC147528103COM2,730$531,000thousands by filing date
POOL CORP COM73278L105Stock1,140$523,000thousands by filing date
MATSON INC COM57686G105Stock8,010$513,000thousands by filing date
CANADIAN NAT RES LTD MED TERM COM136385101Stock13,340$484,000thousands by filing date
BANCO BRADESCO S A059460303SP ADR PFD NEW93,010$477,000thousands by filing date
Merck & Co.,Inc.58933Y105COM5,439$423,000thousands by filing date
NATIONAL STORAGE AFFILIATES TR COM SHS BEN IN637870106REIT7,860$397,000thousands by filing date
VENTAS INC COM92276F100REIT4,442$254,000thousands by filing date
ISHARES RUSSELL MID-CAP GROWTH ETF464287481ETF1,837$208,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-21-002369this filing2021-08-10acceptance time not in the bulk data set