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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 2021-09-30, filed 2021-11-12, with 235 holding rows worth $16,580,184,000.

Accession
0001085146-21-003126
Filed
2021-11-12
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q3 2021

A holdings report, 235 entries on the cover page, a total value of $16,580,184,000 stated on the cover page (in dollars after the unit check, H1), rows summing to $16,580,184,000 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 Inc037833100COM4,699,480$664,976,000thousands by filing date
Alphabet Inc. Reg. Shares A02079K305COM184,585$493,492,000thousands by filing date
Microsoft Corp594918104COM1,701,379$479,653,000thousands by filing date
Amazon.com, Inc023135106COM135,579$445,382,000thousands by filing date
ICON PUB LTD CO SHSG4705A100Stock1,284,943$336,681,000thousands by filing date
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR2,111,493$336,551,000thousands by filing date
META PLATFORMS INC CL A30303M102COM965,347$327,629,000thousands by filing date
BIO RAD LABS INC090572207CL A349,683$260,846,000thousands by filing date
Visa Inc92826C839COM1,036,339$230,845,000thousands by filing date
ZENDESK INC98936J101COM1,903,372$221,533,000thousands by filing date
TRANSDIGM GROUP INC COM893641100Stock348,755$217,822,000thousands by filing date
ServiceNow,Inc.81762P102COM339,992$211,567,000thousands by filing date
Salesforce.com, Inc79466L302COM756,707$205,234,000thousands by filing date
HUBSPOTINC443573100STOK278,533$188,313,000thousands by filing date
LPL FINL HLDGS INC COM50212V100Stock1,176,494$184,427,000thousands by filing date
NATIONAL VISION HLDGS INC COM63845R107Stock2,964,929$168,319,000thousands by filing date
ATKORE INC047649108COMMON STOCK1,928,268$167,605,000thousands by filing date
FORTINET INC COM34959E109Stock566,040$165,306,000thousands by filing date
AMETEK INC COM031100100Stock1,292,719$160,310,000thousands by filing date
ADVANCED DRAIN SYS INC DEL COM00790R104Stock1,476,375$159,699,000thousands by filing date
WORKDAY INC CL A98138H101Stock633,738$158,365,000thousands by filing date
PAYPALHLDGSINC70450Y103STOK601,867$156,612,000thousands by filing date
ACCELERON PHARMA INC00434H108COM894,898$154,012,000thousands by filing date
Union Pacific Corporation907818108COM737,958$144,647,000thousands by filing date
Costco Wholesale Corporation22160K105COM315,790$141,900,000thousands by filing date
Morgan Stanley617446448COM1,433,446$139,489,000thousands by filing date
TAPESTRY INC COM876030107Stock3,756,532$139,067,000thousands by filing date
MGM RESORTS INTERNATIONAL552953101COM3,172,660$136,900,000thousands by filing date
MICROCHIP TECHNOLOGY INC. COM595017104Stock891,163$136,785,000thousands by filing date
NICE LTD SPONSORED ADR653656108ADR475,333$135,014,000thousands by filing date
TRANSUNION COM89400J107Stock1,186,515$133,257,000thousands by filing date
Thermo Fisher Scientific Inc.883556102COM232,794$133,002,000thousands by filing date
TRANE TECHNOLOGIES PLC SHSG8994E103Stock749,685$129,433,000thousands by filing date
HUMANA INC COM444859102Stock329,494$128,223,000thousands by filing date
NVIDIA Corp67066G104COM617,191$127,857,000thousands by filing date
BLUEPRINT MEDICINES CORP09627Y109COM1,215,353$124,950,000thousands by filing date
TREX CO INC89531P105COM1,152,517$117,476,000thousands by filing date
GALLAGHER ARTHUR J & CO COM363576109Stock783,584$116,480,000thousands by filing date
MERCADOLIBREINC58733R102STOK67,677$113,657,000thousands by filing date
INSULET CORP COM45784P101Stock397,404$112,954,000thousands by filing date
VAIL RESORTS INC COM91879Q109Stock325,122$108,607,000thousands by filing date
IDEX CORP COM45167R104Stock518,927$107,392,000thousands by filing date
IRONWOOD PHARMACEUTICALS INC46333X108COMMON STOCK8,181,003$106,844,000thousands by filing date
Intuit Inc.461202103COM197,773$106,701,000thousands by filing date
SAIA INC78709Y105COM436,138$103,814,000thousands by filing date
FIVE BELOW INC COM33829M101Stock585,930$103,598,000thousands by filing date
SYNCHRONYFINL87165B103STOK2,075,316$101,441,000thousands by filing date
Qualcomm Incorporated747525103COM782,152$100,882,000thousands by filing date
SVB FINANCIAL GROUP78486Q101COM154,568$99,987,000thousands by filing date
TARGET CORP COM87612E106Stock429,362$98,225,000thousands by filing date
LIVE NATION ENTERTAINMENT INC COM538034109Stock1,067,198$97,254,000thousands by filing date
GLOBAL PMTS INC37940X102COM612,103$96,455,000thousands by filing date
PALO ALTO NETWORKS INC697435105COM201,365$96,454,000thousands by filing date
HAEMONETICS CORP MASS COM405024100Stock1,356,614$95,763,000thousands by filing date
TELEDYNE TECHNOLOGIES INC COM879360105Stock218,923$94,045,000thousands by filing date
DOUGLAS EMMETT INC25960P109COM2,913,245$92,088,000thousands by filing date
HEXCEL CORP NEW428291108COM1,548,141$91,944,000thousands by filing date
CHIPOTLEMEXICANGRILLI169656105STOK50,470$91,730,000thousands by filing date
TOPBUILD COR COM89055F103Stock444,639$91,067,000thousands by filing date
FIDELITY NATL INFORMATION SVCS COM31620M106Stock745,736$90,741,000thousands by filing date
PAYLOCITY HLDG CORP COM70438V106Stock322,942$90,553,000thousands by filing date
BRP INC COM SUN VTG05577W200Stock966,877$89,610,000thousands by filing date
LUMENTUM HLDGS INC COM55024U109Stock1,068,930$89,298,000thousands by filing date
DEVON ENERGY CORP NEW COM25179M103Stock2,458,154$87,289,000thousands by filing date
OAK STR HEALTH INC67181A107COM2,049,183$87,152,000thousands by filing date
Boston Scientific Corporation101137107COM2,002,229$86,877,000thousands by filing date
ConocoPhillips20825C104COM1,269,804$86,055,000thousands by filing date
COPART INC COM217204106Stock620,262$86,043,000thousands by filing date
AVANTOR INC COM05352A100Stock2,074,741$84,857,000thousands by filing date
LINCOLN ELEC HLDGS INC533900106COM658,022$84,747,000thousands by filing date
BIOGEN INC COM09062X103Stock296,922$84,026,000thousands by filing date
MKS INC. COM55306N104Stock553,972$83,600,000thousands by filing date
SEAGEN INC81181C104COM473,390$80,382,000thousands by filing date
Applied Materials,Inc.038222105COM615,906$79,286,000thousands by filing date
CATALENT INC USD 0.01148806102COM594,767$79,146,000thousands by filing date
MSCI INC COM55354G100Stock129,616$78,851,000thousands by filing date
ZYNGA INC.98986T108CL A10,165,657$76,547,000thousands by filing date
AMERICAN FINANCIAL GROUP INC COM025932104Stock605,464$76,186,000thousands by filing date
TWILIO INC CL A90138F102Stock233,281$74,428,000thousands by filing date
ROCKWELL AUTOMATION INC COM773903109Stock244,459$71,881,000thousands by filing date
SILICON MOTION TECHNOLOGY CORP SPONSORED ADR82706C108ADR1,040,749$71,791,000thousands by filing date
NEUROCRINE BIOSCIENCES INC64125C109COM723,178$69,360,000thousands by filing date
FREEPORT MCMORAN INC CL B35671D857Stock2,130,621$69,309,000thousands by filing date
ULTA BEAUTY INC COM90384S303Stock189,230$68,297,000thousands by filing date
GARTNERINC366651107STOK222,636$67,655,000thousands by filing date
ALIGN TECHNOLOGY INC COM016255101Stock100,387$66,801,000thousands by filing date
F5 INC COM315616102Stock332,669$66,128,000thousands by filing date
ROKU INC COM CL A77543R102Stock208,394$65,300,000thousands by filing date
XILINX INC983919101COM430,820$65,050,000thousands by filing date
DEXCOM INC COM252131107Stock118,654$64,887,000thousands by filing date
NUTANIX INC CL A67059N108Stock1,718,666$64,794,000thousands by filing date
SPIRIT RLTY CAP INC NEW NPV84860W300COM NEW1,387,203$63,867,000thousands by filing date
PACIRA BIOSCIENCES INC COM695127100Stock1,126,319$63,074,000thousands by filing date
ROSS STORES INC COM778296103Stock577,698$62,882,000thousands by filing date
SIGNATURE BANK82669G104COM230,072$62,644,000thousands by filing date
AVALARA INC05338G106COM357,832$62,538,000thousands by filing date
ESSEX PPTY TR INC COM297178105REIT194,976$62,342,000thousands by filing date
TURNING PT THERAPEUTICS90041T108COM936,491$62,211,000thousands by filing date
ITT INC COM45073V108Stock723,953$62,144,000thousands by filing date
WILLIAMS SONOMA INC COM969904101Stock348,366$61,776,000thousands by filing date
AXALTA COATING SYS LTD COMG0750C108Stock2,106,739$61,496,000thousands by filing date
SPLUNK INC848637104COM421,808$61,040,000thousands by filing date
ROCKET PHARMACEUTICALS INC77313F106COM2,026,481$60,572,000thousands by filing date
VULCAN MATLS CO COM929160109Stock347,162$58,726,000thousands by filing date
INNOVIVA INC45781M101COM3,496,845$58,432,000thousands by filing date
Micron Technology,Inc.595112103COM820,053$58,207,000thousands by filing date
LIGHTSPEED COMM INC NPV53229C107SUB VTG SHS589,122$56,809,000thousands by filing date
QUEST DIAGNOSTICS INC COM74834L100Stock388,397$56,438,000thousands by filing date
PEGASYSTEMS INC COM705573103Stock443,730$56,398,000thousands by filing date
TG THERAPEUTICS INC COM88322Q108Stock1,666,699$55,468,000thousands by filing date
LYFT INC55087P104CL A COM1,013,124$54,293,000thousands by filing date
CELANESE CORP DEL COM150870103Stock351,927$53,014,000thousands by filing date
OPTION CARE HEALTH INC COM NEW68404L201Stock2,167,199$52,576,000thousands by filing date
CIRRUS LOGIC INC COM172755100Stock629,269$51,820,000thousands by filing date
FIRST CTZNS BANCSHARES INC DEL CL A31946M103Stock61,225$51,623,000thousands by filing date
THE COOPER COMPANIES216648402COM NEW123,969$51,238,000thousands by filing date
CHURCHILL DOWNS INC171484108COM212,530$51,024,000thousands by filing date
BIOMARIN PHARMACEUTICAL INC09061G101COM654,123$50,557,000thousands by filing date
FLEETCOR TECHNOLOGIES INC339041105COM191,605$50,061,000thousands by filing date
JUNIPER NETWORKS INC48203R104COM1,798,858$49,505,000thousands by filing date
DIAMONDBACK ENERGY INC COM25278X109Stock522,053$49,423,000thousands by filing date
NOVAVAX INC670002401COM NEW238,400$49,423,000thousands by filing date
WEX INC96208T104COM280,272$49,367,000thousands by filing date
T-Mobile US,Inc.872590104COM384,302$49,098,000thousands by filing date
ARES MANAGEMENT CORPORATION CL A COM STK03990B101Stock659,498$48,691,000thousands by filing date
TIMKEN CO887389104COM728,848$47,681,000thousands by filing date
COGENT COMMUNICATIONS GROUP19239V302COM NEW664,668$47,085,000thousands by filing date
IDEXX LABS INC COM45168D104Stock75,096$46,702,000thousands by filing date
TERADYNE INC COM880770102Stock421,845$46,053,000thousands by filing date
SENSATA TECHNOLOGIES HLDG PLg8060n102SHS830,059$45,421,000thousands by filing date
TAKE-TWO INTERACTIVE SOFTWARE COM874054109Stock294,358$45,352,000thousands by filing date
IAA INC449253103COM831,029$45,349,000thousands by filing date
PACIFIC BIOSCIENCES CALIF INC COM69404D108Stock1,737,125$44,384,000thousands by filing date
WASTE CONNECTIONS INC COM94106B101Stock352,112$44,341,000thousands by filing date
DARDEN RESTAURANTS INC COM237194105Stock289,838$43,902,000thousands by filing date
EXPEDIA GROUP INC COM NEW30212P303Stock265,114$43,452,000thousands by filing date
EVERPURE INC CL A74624M102Stock1,719,935$43,274,000thousands by filing date
MIMECAST LIMITEDG14838109ORD SHS667,361$42,444,000thousands by filing date
PS BUSINESS PKS INC CALIF69360J107COM262,662$41,170,000thousands by filing date
FMC CORP COM NEW302491303Stock438,427$40,142,000thousands by filing date
TANDEM DIABETES CARE INC875372203COM NEW331,027$39,518,000thousands by filing date
AZEK CO INC05478C105CL A1,080,213$39,460,000thousands by filing date
AMERICAN ASSETS TR INC COM024013104REIT1,044,255$39,076,000thousands by filing date
PRIMERICA INC74164M108COM249,981$38,405,000thousands by filing date
SMARTSHEET INC. (CLASS A)83200N103COM CL A555,906$38,257,000thousands by filing date
RINGCENTRAL INC76680R206CL A172,955$37,618,000thousands by filing date
PDC ENERGY INC69327R101COM791,747$37,521,000thousands by filing date
INVITAE CORP46185L103COM1,305,681$37,121,000thousands by filing date
PAYA HOLDINGS INC70434P103COM CL A3,355,737$36,477,000thousands by filing date
ON SEMICONDUCTOR CORP COM682189105Stock795,812$36,424,000thousands by filing date
COGNIZANT TECHNOLOGY SOLUTIONS CL A192446102Stock474,225$35,192,000thousands by filing date
WESTERN DIGITAL CORP958102105COM611,079$34,489,000thousands by filing date
ANAPLAN INC03272L108COM562,892$34,274,000thousands by filing date
SHIFT4 PMTS INC CL A82452J109Stock441,940$34,259,000thousands by filing date
AMEDISYS INC023436108COM225,617$33,639,000thousands by filing date
PLAYA HOTELS & RESORTS NVN70544106SHS3,997,951$33,143,000thousands by filing date
RANPAK HOLDINGS CORP75321W103COMMON STOCK1,208,886$32,422,000thousands by filing date
WNS HOLDINGS LTD92932M101SPON ADR385,126$31,503,000thousands by filing date
AVIENT CORPORATION05368V106COM678,625$31,454,000thousands by filing date
THE BALDWIN INSURANCE GRP IN05589G102COM CL A910,543$30,312,000thousands by filing date
REVOLVE GROUP INC CL A76156B107Stock467,781$28,895,000thousands by filing date
FLYWIRE CORPORATION302492103COM VTG634,179$27,802,000thousands by filing date
SMART GLOBAL HLDGS INCG8232Y101COM622,280$27,691,000thousands by filing date
BLACKLINE, INC.09239B109COM225,388$26,609,000thousands by filing date
SEMTECH CORP COM816850101Stock331,053$25,812,000thousands by filing date
PALOMAR HLDGS INC COM69753M105Stock297,046$24,010,000thousands by filing date
UnitedHealth Group Inc91324P102COM57,014$22,278,000thousands by filing date
BRIDGEBIO PHARMA INC10806X102COM474,976$22,262,000thousands by filing date
MISTER CAR WASH INC60646V105COM1,103,749$20,143,000thousands by filing date
Broadcom Inc.11135F101COM39,990$19,392,000thousands by filing date
NCR VOYIX CORPORATION62886E108COM486,926$18,873,000thousands by filing date
CINTAS CORP COM172908105Stock48,575$18,491,000thousands by filing date
Home Depot, Inc437076102COM56,208$18,451,000thousands by filing date
FATE THERAPEUTICS INC31189P102COM291,101$17,254,000thousands by filing date
2U INC90214J101COM446,378$14,985,000thousands by filing date
SILVERGATE CAP CORP CLASS A82837P408CL A120,795$13,952,000thousands by filing date
NKARTA INC65487U108COMMON STOCK494,173$13,743,000thousands by filing date
Alphabet Inc. Reg. Shares C02079K107COM4,873$12,988,000thousands by filing date
ILLINOIS TOOL WKS INC452308109COM57,407$11,862,000thousands by filing date
ENCORE WIRE CORP292562105COM123,392$11,701,000thousands by filing date
AbbVie,Inc.00287Y109COM98,316$10,605,000thousands by filing date
COGNYTE SOFTWARE LTDM25133105ORD SHS496,695$10,207,000thousands by filing date
Danaher Corporation235851102COM32,521$9,901,000thousands by filing date
METTLER TOLEDO INTERNATIONAL COM592688105Stock7,073$9,742,000thousands by filing date
UPWORK INC91688F104COM210,668$9,486,000thousands by filing date
Comcast Corp20030N101COM150,914$8,441,000thousands by filing date
Johnson & Johnson478160104COM50,476$8,152,000thousands by filing date
LAM RESEARCH CORP512807108COM12,975$7,385,000thousands by filing date
ALEXANDRIA REAL ESTATE EQ INC COM015271109REIT38,050$7,270,000thousands by filing date
PRICE T ROWE GROUP INC COM74144T108Stock36,775$7,234,000thousands by filing date
SUN CMNTYS INC COM866674104REIT38,950$7,210,000thousands by filing date
Cisco Systems,Inc.17275R102COM128,850$7,013,000thousands by filing date
HARTFORD INSURANCE GROUP INC COM416515104Stock94,895$6,666,000thousands by filing date
BLACKROCK INC CL A COM09247X101COM7,695$6,453,000thousands by filing date
COSTAR GROUP INC COM22160N109Stock74,500$6,411,000thousands by filing date
Walmart Inc.931142103COM45,950$6,405,000thousands by filing date
PepsiCo,Inc.713448108COM41,650$6,265,000thousands by filing date
Coca-Cola Company191216100COM111,255$5,838,000thousands by filing date
FAIR ISAAC CORP COM303250104Stock14,331$5,703,000thousands by filing date
Bristol-Myers Squibb Company110122108COM95,960$5,678,000thousands by filing date
BUNGE LTDG16962105COM65,860$5,356,000thousands by filing date
AVERY DENNISON CORP COM053611109Stock25,813$5,349,000thousands by filing date
CVS Health Corporation126650100COM62,325$5,289,000thousands by filing date
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock37,450$5,221,000thousands by filing date
Analog Devices,Inc.032654105COM29,040$4,864,000thousands by filing date
AMERICAN INTL GROUP INC COM NEW026874784Stock84,520$4,639,000thousands by filing date
VALERO ENERGY CORP COM91913Y100Stock61,460$4,337,000thousands by filing date
FOOT LOCKER INC344849104COM84,225$3,846,000thousands by filing date
RAYMOND JAMES FINL INC COM754730109Stock40,095$3,700,000thousands by filing date
HEICO CORP NEW422806208CL A20,130$2,384,000thousands by filing date
SCIENCE APPLICATIONS INTL CORP COM808625107Stock24,770$2,119,000thousands by filing date
NEWMONT CORP651639106COM34,064$1,850,000thousands by filing date
S&P Global,Inc.78409V104COM4,274$1,816,000thousands by filing date
MERITOR INC59001K100COMMON STOCK69,680$1,485,000thousands by filing date
Walt Disney Co254687106COM7,921$1,340,000thousands by filing date
Starbucks Corporation855244109COM10,830$1,195,000thousands by filing date
METROPOLITAN BANK HOLDING CO591774104COMMON STOCK12,700$1,071,000thousands by filing date
JPMorgan Chase & Co46625H100COM6,300$1,031,000thousands by filing date
NIKE,Inc. Class B654106103COM6,929$1,006,000thousands by filing date
ESSENTIAL PPTYS RLTY TR INC COM29670E107REIT31,900$891,000thousands by filing date
SPDR SER TR78468R556S&P OILGAS EXP8,900$861,000thousands by filing date
PERELLA WEINBERG PARTNERS71367G102COMMON STOCK64,280$852,000thousands by filing date
CSX Corporation126408103COM28,590$850,000thousands by filing date
BLACK KNIGHT INC COM09215C105Stock11,550$832,000thousands by filing date
NXP SEMICONDUCTORS N V COMN6596X109Stock3,131$613,000thousands by filing date
WILLIAMS COS INC COM969457100Stock23,330$605,000thousands by filing date
HOWARD HUGHES CORPORATION44267D107COMMON STOCK6,700$588,000thousands by filing date
SOTERA HEALTH CO83601L102COM21,690$567,000thousands by filing date
TERRENO RLTY CORP88146M101COM8,840$559,000thousands by filing date
POOL CORP COM73278L105Stock1,140$495,000thousands by filing date
TENNECO INC880349105COM32,220$460,000thousands by filing date
NATIONAL STORAGE AFFILIATES TR COM SHS BEN IN637870106REIT7,860$415,000thousands by filing date
OLD DOMINION FREIGHT LINE INC COM679580100Stock1,249$357,000thousands by filing date
ISHARES RUSSELL MID-CAP GROWTH ETF464287481ETF2,281$256,000thousands by filing date
VENTAS INC COM92276F100REIT4,442$245,000thousands by filing date

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-21-003126this filing2021-11-12acceptance time not in the bulk data set