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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 2024-06-30, filed 2024-08-14, with 248 holding rows worth $20,353,525,988.

Accession
0001085146-24-003888
Filed
2024-08-14
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q2 2024

A holdings report, 248 entries on the cover page, a total value of $20,353,525,988 stated on the cover page (in dollars after the unit check, H1), rows summing to $20,353,525,988 with VALUE read as dollars as filed, 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
NVIDIA Corp67066G104COM7,096,952$876,757,487dollars as filed
Microsoft Corp594918104COM1,846,637$825,354,313dollars as filed
Apple Inc037833100COM3,812,231$802,932,160dollars as filed
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR4,962,824$676,829,960dollars as filed
Amazon.com, Inc023135106COM3,279,806$633,822,515dollars as filed
Alphabet Inc. Reg. Shares A02079K305COM3,100,861$564,821,920dollars as filed
TRANSDIGM GROUP INC COM893641100Stock363,406$464,291,275dollars as filed
META PLATFORMS INC CL A30303M102COM861,572$434,421,615dollars as filed
VERTIV HOLDINGS CO COM CL A92537N108Stock3,570,870$309,130,173dollars as filed
AXONENTERPRISEINC05464C101STOK1,047,559$308,233,892dollars as filed
ServiceNow,Inc.81762P102COM358,202$281,786,727dollars as filed
COMFORT SYS USA INC COM199908104Stock864,869$263,023,960dollars as filed
Visa Inc92826C839COM882,448$231,616,176dollars as filed
DEXCOM INC COM252131107Stock1,965,318$222,827,800dollars as filed
LEGEND BIOTECH CORP52490G102SPONSORED ADS4,772,209$211,361,147dollars as filed
Uber Technologies90353T100COM2,827,566$205,507,514dollars as filed
Progressive Corporation743315103COM914,475$189,945,680dollars as filed
WINGSTOP INC COM974155103Stock436,479$184,482,214dollars as filed
TAIWAN SEMICONDUCTOR MFG874039100SPONSORED ADS1,060,028$184,243,492dollars as filed
AbbVie,Inc.00287Y109COM1,005,058$172,387,502dollars as filed
CADENCE DESIGN SYSTEM INC COM127387108Stock550,394$169,383,751dollars as filed
ICON PUB LTD CO SHSG4705A100Stock527,751$165,434,184dollars as filed
LPL FINL HLDGS INC COM50212V100Stock584,601$163,279,059dollars as filed
OPTION CARE HEALTH INC COM NEW68404L201Stock5,892,563$163,223,995dollars as filed
CHIPOTLEMEXICANGRILLI169656105STOK2,558,292$160,277,013dollars as filed
Salesforce.com, Inc79466L302COM613,741$157,792,878dollars as filed
VAXCYTE INC COM92243G108Stock1,929,348$145,685,067dollars as filed
MASIMO CORP COM574795100Stock1,131,686$142,524,552dollars as filed
MONDAY COM LTD SHSM7S64H106Stock586,075$141,103,438dollars as filed
AMERICAN INTL GROUP INC COM NEW026874784Stock1,827,946$135,706,727dollars as filed
TEXAS ROADHOUSE INC COM882681109Stock789,392$135,546,500dollars as filed
SAP SE SPON ADR803054204ADR671,132$135,374,020dollars as filed
ARES MANAGEMENT CORPORATION CL A COM STK03990B101Stock992,416$132,269,159dollars as filed
DRAFTKINGS INC NEW26142V105COM CL A3,461,599$132,129,249dollars as filed
LANTHEUS HLDGS INC516544103COM1,641,158$131,768,576dollars as filed
M/I HOMES INC55305B101COM1,067,532$130,388,358dollars as filed
SAIA INC78709Y105COM271,591$128,812,895dollars as filed
COSTAR GROUP INC COM22160N109Stock1,719,913$127,514,376dollars as filed
FAIR ISAAC CORP COM303250104Stock83,453$124,232,635dollars as filed
Costco Wholesale Corporation22160K105COM145,392$123,581,970dollars as filed
MONGODB INC CL A60937P106Stock488,722$122,160,897dollars as filed
Advanced Micro Devices,Inc.007903107COM746,157$121,034,114dollars as filed
INSULET CORP COM45784P101Stock591,484$119,361,408dollars as filed
NXP SEMICONDUCTORS N V COMN6596X109Stock443,517$119,345,879dollars as filed
WILLSCOT HLDGS CORP971378104COM CL A3,164,403$119,108,129dollars as filed
PTC INC COM69370C100Stock638,228$115,946,970dollars as filed
BLUE OWL CAPITAL INC COM CL A09581B103Stock6,443,066$114,364,422dollars as filed
ROSS STORES INC COM778296103Stock786,739$114,328,874dollars as filed
HUBSPOTINC443573100STOK193,212$113,954,666dollars as filed
SAMSARA INC COM CL A79589L106Stock3,367,979$113,500,892dollars as filed
CONSTELLATION BRANDS INC CL A21036P108Stock441,031$113,468,476dollars as filed
MACOM TECH SOLUTIONS HLDGS INC COM55405Y100Stock1,000,396$111,514,195dollars as filed
Home Depot, Inc437076102COM310,668$106,944,286dollars as filed
Palantir Technologies Inc. Class A69608A108COM4,220,141$106,896,170dollars as filed
AVERY DENNISON CORP COM053611109Stock488,344$106,776,416dollars as filed
SHIFT4 PMTS INC CL A82452J109Stock1,442,281$105,791,311dollars as filed
F5 INC COM315616102Stock609,615$104,993,991dollars as filed
UnitedHealth Group Inc91324P102COM204,454$104,120,279dollars as filed
GLOBANT S AL44385109COM576,123$102,699,672dollars as filed
Union Pacific Corporation907818108COM427,272$96,674,510dollars as filed
ROCKET PHARMACEUTICALS INC77313F106COM4,327,922$93,180,161dollars as filed
DYNATRACE INC COM NEW268150109Stock2,054,964$91,939,089dollars as filed
FTAI AVIATION LTD SHSG3730V105Stock887,014$91,566,455dollars as filed
GLOBAL PMTS INC37940X102COM939,034$90,804,556dollars as filed
CASELLA WASTE SYS INC147448104CL A910,818$90,371,362dollars as filed
HUBBELL INC COM443510607Stock243,728$89,077,709dollars as filed
Tesla Motors, Inc88160R101COM437,997$86,670,785dollars as filed
COPART INC COM217204106Stock1,597,802$86,536,970dollars as filed
FLEX LTD ORDY2573F102Stock2,932,165$86,469,546dollars as filed
FLYWIRE CORPORATION302492103COM VTG5,220,396$85,562,290dollars as filed
ITT INC COM45073V108Stock641,634$82,886,280dollars as filed
SENSATA TECHNOLOGIES HLDG PLg8060n102SHS2,191,327$81,933,717dollars as filed
ROCKWELL AUTOMATION INC COM773903109Stock296,166$81,528,486dollars as filed
Charles Schwab Corp808513105COM1,086,071$80,032,585dollars as filed
PERMIAN RESOURCES CORP CLASS A COM71424F105Stock4,951,636$79,968,921dollars as filed
COHERENT CORP COM19247G107Stock1,092,405$79,155,666dollars as filed
IDEX CORP COM45167R104Stock391,140$78,697,368dollars as filed
REGAL REXNORD CORPORATION758750103COM579,872$78,410,292dollars as filed
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock685,448$75,454,116dollars as filed
VULCAN MATLS CO COM929160109Stock303,078$75,369,529dollars as filed
APOLLO GLOBAL MGMT INC COM03769M106Stock629,577$74,334,142dollars as filed
INSIGHT ENTERPRISES INC45765U103COM374,339$74,253,884dollars as filed
AMETEK INC COM031100100Stock442,996$73,851,907dollars as filed
CDW CORP COM12514G108Stock329,713$73,802,988dollars as filed
DATADOGINCCLASSA23804L103STOK566,746$73,501,328dollars as filed
HUNT J B TRANS SVCS INC COM445658107Stock456,823$73,091,702dollars as filed
SUN CMNTYS INC COM866674104REIT604,452$72,739,754dollars as filed
INTRA-CELLULAR THERAPIES INC46116X101COMMON STOCK1,042,862$71,425,618dollars as filed
OVINTIV INC69047Q102COM1,510,039$70,775,528dollars as filed
NORTHERN OIL & GAS INC COM665531307Stock1,878,499$69,823,808dollars as filed
DIAMONDBACK ENERGY INC COM25278X109Stock348,608$69,787,760dollars as filed
Cisco Systems,Inc.17275R102COM1,453,819$69,070,944dollars as filed
AXALTA COATING SYS LTD COMG0750C108Stock2,012,196$68,756,737dollars as filed
GE HEALTHCARE TECHNOLOGIES INC COMMON STOCK36266G107Stock877,859$68,402,794dollars as filed
AZEK CO INC05478C105CL A1,622,142$68,340,842dollars as filed
SENTINELONE INC81730H109CL A3,201,739$67,396,606dollars as filed
ASMLHLDGNVFSPONSOREDADR1ADRREPS1ORDSHSN07059210STOK65,541$67,030,975dollars as filed
NEUROCRINE BIOSCIENCES INC64125C109COM484,777$66,739,250dollars as filed
GALLAGHER ARTHUR J & CO COM363576109Stock256,239$66,445,237dollars as filed
BIO RAD LABS INC090572207CL A243,185$66,416,255dollars as filed
IRHYTHM HOLDINGS INC COM450056106Stock609,080$65,561,371dollars as filed
Walmart Inc.931142103COM944,537$63,954,619dollars as filed
AVIENT CORPORATION05368V106COM1,459,518$63,707,961dollars as filed
TAPESTRY INC COM876030107Stock1,479,523$63,308,789dollars as filed
SMARTSHEET INC. (CLASS A)83200N103COM CL A1,421,010$62,638,121dollars as filed
PRIMERICA INC74164M108COM264,741$62,632,426dollars as filed
WASTE CONNECTIONS INC COM94106B101Stock355,704$62,376,233dollars as filed
MSCI INC COM55354G100Stock128,094$61,709,208dollars as filed
MERITAGE HOMES CORP COM59001A102Stock380,657$61,609,335dollars as filed
HAEMONETICS CORP MASS COM405024100Stock742,880$61,458,462dollars as filed
ON HLDG AG NAMEN AKT AH5919C104Stock1,580,135$61,309,238dollars as filed
RED ROCK RESORTS INC75700L108CL A1,096,066$60,206,905dollars as filed
ODDITY TECH LTD SHS CL AM7518J104Stock1,506,752$59,155,084dollars as filed
MGM RESORTS INTERNATIONAL552953101COM1,318,628$58,599,812dollars as filed
Broadcom Inc.11135F101COM36,316$58,306,427dollars as filed
AVANTOR INC COM05352A100Stock2,742,078$58,132,064dollars as filed
COOPER COS INC216648501COM659,021$57,532,498dollars as filed
ZSCALERINC98980G102STOK298,702$57,407,529dollars as filed
HILTON WORLDWIDE HLDGS INC COM43300A203Stock261,647$57,091,469dollars as filed
S&P Global,Inc.78409V104COM124,779$55,651,619dollars as filed
WNS HLDGS LTD COM SHSG98196101Stock1,052,726$55,268,115dollars as filed
CELANESE CORP DEL COM150870103Stock408,627$55,119,727dollars as filed
FIRST CTZNS BANCSHARES INC DEL CL A31946M103Stock32,614$54,909,767dollars as filed
IDEXX LABS INC COM45168D104Stock112,602$54,859,909dollars as filed
DESCARTES SYS GROUP INC COM249906108Stock564,958$54,710,533dollars as filed
NU HLDGS LTDG6683N103ORD SHS CL A4,159,431$53,615,066dollars as filed
CHURCHILL DOWNS INC171484108COM381,807$53,300,257dollars as filed
KYNDRYL HLDGS INC50155Q100COMMON STOCK2,004,874$52,748,235dollars as filed
ZEBRA TECHNOLOGIES CORPORATION CL A989207105Stock170,010$52,521,334dollars as filed
TRADEWEB MKTS INC CL A892672106Stock491,158$52,062,748dollars as filed
MICROCHIP TECHNOLOGY INC. COM595017104Stock549,700$50,297,560dollars as filed
THETRADEDESKINCCLASSCLASSA88339J105STOK512,769$50,082,137dollars as filed
FABRINET SHSG3323L100Stock203,043$49,702,896dollars as filed
EVERPURE INC CL A74624M102Stock769,070$49,381,959dollars as filed
TERADYNE INC COM880770102Stock332,550$49,313,876dollars as filed
MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD61559X104Stock1,117,625$49,141,971dollars as filed
NEXTPOWER INC CLASS A COM65290E101Stock1,020,969$47,863,027dollars as filed
CYTOKINETICS INC23282W605COM NEW873,513$47,326,934dollars as filed
ALIGN TECHNOLOGY INC COM016255101Stock191,276$46,179,847dollars as filed
PROCORE TECHNOLOGIES INC COM74275K108Stock694,185$46,031,419dollars as filed
CCC INTELLIGENT SOLUTIONS HLD COM12510Q100Stock4,123,614$45,813,352dollars as filed
GITLAB INC CLASS A COM37637K108Stock909,356$45,213,180dollars as filed
COINBASE GLOBAL INC COM CL A19260Q107Stock203,302$45,179,803dollars as filed
STAG INDUSTRIAL INC85254J102COM1,227,968$44,280,526dollars as filed
INNOVIVA INC45781M101COM2,679,237$43,939,487dollars as filed
MARQETA INC57142B104CLASS A COM8,013,792$43,915,580dollars as filed
LINCOLN ELEC HLDGS INC533900106COM229,973$43,382,107dollars as filed
PATTERSON-UTI ENERGY INC703481101COM4,170,722$43,208,680dollars as filed
IMPINJ INC453204109COM274,850$43,088,235dollars as filed
DEVON ENERGY CORP NEW COM25179M103Stock896,305$42,484,839dollars as filed
NOVA LTD COMM7516K103Stock179,834$42,176,468dollars as filed
WEX INC96208T104COM237,309$42,036,916dollars as filed
VIKING THERAPEUTICS INC92686J106COM786,695$41,702,702dollars as filed
ROKU INC COM CL A77543R102Stock679,175$40,702,958dollars as filed
VEECO INSTRS INC DEL COM922417100Stock856,308$39,998,147dollars as filed
TENABLE HLDGS INC88025T102COM890,023$38,787,202dollars as filed
PAYLOCITY HLDG CORP COM70438V106Stock290,652$38,322,466dollars as filed
LIVE NATION ENTERTAINMENT INC COM538034109Stock401,962$37,679,924dollars as filed
ALLEGRO MICROSYSTEMS INC01749D105COM1,303,296$36,805,079dollars as filed
CHAMPIONX CORPORATION15872M104COM1,083,743$35,991,105dollars as filed
ENVESTNET INC29404K106COM564,517$35,333,119dollars as filed
LIGHTSPEED COMM INC NPV53229C107SUB VTG SHS2,558,843$35,030,561dollars as filed
UNIVERSAL DISPLAY CORP91347P105COM165,483$34,792,801dollars as filed
KINSALECAPGROUPINC49714P108STOK90,246$34,769,979dollars as filed
CAMECO CORP COM13321L108Stock698,440$34,363,248dollars as filed
REVOLVE GROUP INC CL A76156B107Stock2,089,213$33,239,379dollars as filed
REPLIGEN CORP COM759916109Stock255,762$32,241,358dollars as filed
RAMBUS INC DEL COM750917106Stock545,740$32,067,682dollars as filed
ALKERMES PLCG01767105SHS1,316,605$31,730,181dollars as filed
KEYCORP COM493267108Stock2,228,399$31,665,550dollars as filed
JABIL INC COM466313103Stock286,612$31,180,480dollars as filed
BICYCLE THERAPEUTICS PLC-ADR088786108SPONSORED ADS1,523,856$30,842,845dollars as filed
ENPHASE ENERGY INC COM29355A107Stock298,894$29,802,761dollars as filed
SELECTIVE INS GROUP INC816300107COM309,497$29,040,104dollars as filed
CREDO TECHNOLOGY GROUP HOLDING ORDINARY SHARESG25457105Stock908,362$29,013,082dollars as filed
KEMPER CORP COM488401100Stock462,761$27,455,610dollars as filed
EAST WEST BANCORP INC COM27579R104Stock372,126$27,250,787dollars as filed
Eli Lilly and Company532457108COM29,803$26,983,040dollars as filed
PALOMAR HLDGS INC COM69753M105Stock316,856$25,712,864dollars as filed
XENON PHARMACEUTICALS INC COM98420N105Stock643,546$25,091,859dollars as filed
CELESTICA INC COM15101Q207Stock426,277$24,438,460dollars as filed
VISTRA CORP COM92840M102Stock277,289$23,841,317dollars as filed
Analog Devices,Inc.032654105COM101,816$23,240,520dollars as filed
CERIDIAN HCM HLDG INC15677J108COM468,522$23,238,698dollars as filed
ICHOR HOLDINGSG4740B105SHS555,929$21,431,063dollars as filed
WINTRUST FINL CORP COM97650W108Stock208,584$20,558,039dollars as filed
89BIO INC282559103COM2,319,365$18,578,114dollars as filed
International Business Machines Corporation459200101COM97,992$16,947,716dollars as filed
MARVELL TECHNOLOGY INC573874104COM220,174$15,390,163dollars as filed
Alphabet Inc. Reg. Shares C02079K107COM68,992$12,654,513dollars as filed
Merck & Co.,Inc.58933Y105COM99,708$12,343,850dollars as filed
Coca-Cola Company191216100COM190,601$12,131,754dollars as filed
CINTAS CORP COM172908105Stock15,155$10,612,440dollars as filed
WATSCO INC COM942622200Stock22,397$10,375,186dollars as filed
MUELLER INDS INC COM624756102Stock179,500$10,220,730dollars as filed
Thermo Fisher Scientific Inc.883556102COM18,114$10,017,042dollars as filed
Bank of America Corp060505104COM243,900$9,699,903dollars as filed
PLEXUS CORP COM729132100Stock86,639$8,939,412dollars as filed
AMERIPRISE FINL INC COM03076C106Stock20,606$8,802,677dollars as filed
VALERO ENERGY CORP COM91913Y100Stock53,195$8,338,848dollars as filed
WILEY JOHN & SONS INC968223206CL A198,286$8,070,240dollars as filed
WILLIAMS COS INC COM969457100Stock188,533$8,012,653dollars as filed
TRACTOR SUPPLY CO COM892356106Stock29,077$7,850,790dollars as filed
Pfizer Inc.717081103COM275,178$7,699,480dollars as filed
TJX Companies Inc872540109COM69,199$7,618,810dollars as filed
NextEra Energy,Inc.65339F101COM106,850$7,566,049dollars as filed
HERSHEY CO COM427866108Stock40,657$7,473,976dollars as filed
FIFTH THIRD BANCORP COM316773100Stock198,967$7,260,306dollars as filed
GARTNERINC366651107STOK14,370$6,452,992dollars as filed
FREEPORT MCMORAN INC CL B35671D857Stock132,698$6,449,123dollars as filed
FERGUSON PLC NEWG3421J106SHS30,824$5,969,068dollars as filed
SANOFI SA SPONSORED ADR80105N105ADR117,904$5,720,702dollars as filed
Danaher Corporation235851102COM21,995$5,495,451dollars as filed
ConocoPhillips20825C104COM47,462$5,428,704dollars as filed
CUMMINS INC COM231021106Stock19,098$5,288,809dollars as filed
FIDELITY NATL INFORMATION SVCS COM31620M106Stock70,177$5,288,539dollars as filed
RAYMOND JAMES FINL INC COM754730109Stock40,095$4,956,143dollars as filed
TIMKEN CO887389104COM47,820$3,831,817dollars as filed
HEICO CORP NEW422806208CL A20,130$3,573,478dollars as filed
MKS INC. COM55306N104Stock24,100$3,146,992dollars as filed
ILLINOIS TOOL WKS INC452308109COM12,733$3,017,212dollars as filed
RANPAK HOLDINGS CORP75321W103COMMON STOCK371,198$2,386,803dollars as filed
MURAL ONCOLOGY PUB LTD COG63365103ORD SHS743,495$2,334,574dollars as filed
Applied Materials,Inc.038222105COM9,748$2,300,431dollars as filed
FIVE BELOW INC COM33829M101Stock18,330$1,997,420dollars as filed
TRANE TECHNOLOGIES PLC SHSG8994E103Stock3,559$1,170,662dollars as filed
BUILDERS FIRSTSOURCE INC COM12008R107Stock7,920$1,096,207dollars as filed
CAMTEK LTD ORDM20791105Stock7,810$978,124dollars as filed
CSX Corporation126408103COM28,590$956,336dollars as filed
Intuit Inc.461202103COM1,410$926,666dollars as filed
AAON INC000360206COM PAR $0.0049,630$840,121dollars as filed
Booking Holdings Inc.09857L108COM210$831,915dollars as filed
SUPER MICRO COMPUTER INC86800U104COM928$760,357dollars as filed
Elevance Health, Inc.036752103COM1,230$666,488dollars as filed
TERRENO RLTY CORP88146M101COM8,840$523,151dollars as filed
MEDIAALPHA INC58450V104CL A33,800$445,146dollars as filed
OLD DOMINION FREIGHT LINE INC COM679580100Stock2,498$441,147dollars as filed
STRATEGY INC CL A NEW594972408Stock266$366,410dollars as filed
REPAY HLDGS CORP76029L100COM CL A33,940$358,406dollars as filed
ELFBEAUTYINC26856L103STOK1,650$347,688dollars as filed
BLOCK INC CL A852234103Stock5,390$347,601dollars as filed
MERCURY GENL CORP NEW589400100COM6,350$337,439dollars as filed
NANO DIMENSION LTD63008G203SPONSORD ADS NEW149,070$327,954dollars as filed
NATIONAL STORAGE AFFILIATES TR COM SHS BEN IN637870106REIT7,860$323,989dollars as filed
ISHARES RUSSELL MID-CAP GROWTH ETF464287481ETF2,418$266,798dollars as filed
METTLER TOLEDO INTERNATIONAL COM592688105Stock185$258,554dollars as filed
Vertex Pharmaceuticals Incorporated92532F100COM544$254,984dollars as filed
LULULEMON ATHLETICA INC550021109COM706$210,882dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-24-003888this filing2024-08-14acceptance time not in the bulk data set