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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 2023-09-30, filed 2023-11-13, with 234 holding rows worth $14,680,795,887.

Accession
0001085146-23-004307
Filed
2023-11-13
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q3 2023

A holdings report, 234 entries on the cover page, a total value of $14,680,795,887 stated on the cover page (in dollars after the unit check, H1), rows summing to $14,680,795,887 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
Apple Inc037833100COM2,620,832$448,712,647dollars as filed
Alphabet Inc. Reg. Shares A02079K305COM3,263,044$427,001,873dollars as filed
Microsoft Corp594918104COM1,342,536$423,905,899dollars as filed
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR3,802,177$356,035,825dollars as filed
Amazon.com, Inc023135106COM2,380,224$302,574,054dollars as filed
NVIDIA Corp67066G104COM638,970$277,945,763dollars as filed
TRANSDIGM GROUP INC COM893641100Stock323,938$273,122,169dollars as filed
Visa Inc92826C839COM1,099,058$252,794,318dollars as filed
META PLATFORMS INC CL A30303M102COM734,688$220,560,560dollars as filed
UnitedHealth Group Inc91324P102COM430,802$217,205,995dollars as filed
DEXCOM INC COM252131107Stock1,847,865$172,405,787dollars as filed
ServiceNow,Inc.81762P102COM303,647$169,726,647dollars as filed
BUILDERS FIRSTSOURCE INC COM12008R107Stock1,273,570$158,546,701dollars as filed
SAIA INC78709Y105COM386,496$154,076,630dollars as filed
AMETEK INC COM031100100Stock1,040,033$153,675,238dollars as filed
Eli Lilly and Company532457108COM286,015$153,627,059dollars as filed
INSPIRE MED SYS INC COM457730109Stock732,400$145,337,456dollars as filed
LPL FINL HLDGS INC COM50212V100Stock599,104$142,377,109dollars as filed
FORTINET INC COM34959E109Stock2,412,418$141,560,662dollars as filed
AXONENTERPRISEINC05464C101STOK696,193$138,535,478dollars as filed
ICON PUB LTD CO SHSG4705A100Stock556,017$136,919,185dollars as filed
SPLUNK INC848637104COM929,975$136,008,895dollars as filed
HUBBELL INC COM443510607Stock424,895$133,166,421dollars as filed
CHIPOTLEMEXICANGRILLI169656105STOK72,682$133,141,720dollars as filed
BIO RAD LABS INC090572207CL A362,328$129,876,617dollars as filed
WILLSCOT HLDGS CORP971378104COM CL A3,003,308$124,907,580dollars as filed
OPTION CARE HEALTH INC COM NEW68404L201Stock3,747,388$121,228,002dollars as filed
F5 INC COM315616102Stock748,118$120,551,735dollars as filed
Costco Wholesale Corporation22160K105COM205,617$116,165,414dollars as filed
Home Depot, Inc437076102COM383,099$115,757,211dollars as filed
Salesforce.com, Inc79466L302COM570,176$115,620,279dollars as filed
LINCOLN ELEC HLDGS INC533900106COM619,974$112,705,073dollars as filed
FLYWIRE CORPORATION302492103COM VTG3,514,112$112,065,032dollars as filed
LEGEND BIOTECH CORP52490G102SPONSORED ADS1,668,150$112,049,624dollars as filed
GENPACT LIMITED SHSG3922B107Stock2,948,433$106,733,291dollars as filed
MARVELL TECHNOLOGY INC573874104COM1,962,787$106,245,670dollars as filed
INSULET CORP COM45784P101Stock637,261$101,636,809dollars as filed
SMARTSHEET INC. (CLASS A)83200N103COM CL A2,482,430$100,439,118dollars as filed
TENABLE HLDGS INC88025T102COM2,195,092$98,340,122dollars as filed
SAREPTA THERAPEUTICS INC803607100COM806,400$97,751,772dollars as filed
HUBSPOTINC443573100STOK193,532$95,314,533dollars as filed
HEXCEL CORP NEW428291108COM1,462,293$95,253,766dollars as filed
GLOBAL PMTS INC37940X102COM809,810$93,443,968dollars as filed
VISTEON CORP92839U206COM NEW664,137$91,697,396dollars as filed
CADENCE DESIGN SYSTEM INC COM127387108Stock389,797$91,329,542dollars as filed
LANTHEUS HLDGS INC516544103COM1,294,391$89,934,287dollars as filed
Tesla Motors, Inc88160R101COM359,314$89,907,604dollars as filed
AVANTOR INC COM05352A100Stock4,246,946$89,525,632dollars as filed
CONSTELLATION BRANDS INC CL A21036P108Stock349,382$87,810,189dollars as filed
NICE LTD SPONSORED ADR653656108ADR511,020$86,873,379dollars as filed
ROCKWELL AUTOMATION INC COM773903109Stock303,324$86,711,248dollars as filed
ROCKET PHARMACEUTICALS INC77313F106COM4,193,996$85,934,978dollars as filed
PAYLOCITY HLDG CORP COM70438V106Stock472,517$85,856,339dollars as filed
Union Pacific Corporation907818108COM416,126$84,735,814dollars as filed
AVERY DENNISON CORP COM053611109Stock457,013$83,482,565dollars as filed
CERIDIAN HCM HLDG INC15677J108COM1,226,077$83,189,301dollars as filed
BRP INC COM SUN VTG05577W200Stock1,094,083$82,997,136dollars as filed
MSCI INC COM55354G100Stock160,679$82,441,173dollars as filed
WORKDAY INC CL A98138H101Stock383,625$82,421,798dollars as filed
GALLAGHER ARTHUR J & CO COM363576109Stock361,096$82,304,621dollars as filed
DYNATRACE INC COM NEW268150109Stock1,760,141$82,251,389dollars as filed
M/I HOMES INC55305B101COM977,922$82,184,565dollars as filed
CELANESE CORP DEL COM150870103Stock653,146$81,982,934dollars as filed
HUNT J B TRANS SVCS INC COM445658107Stock432,173$81,473,257dollars as filed
AMERICAN INTL GROUP INC COM NEW026874784Stock1,336,355$80,983,089dollars as filed
COPART INC COM217204106Stock1,773,535$76,421,640dollars as filed
IDEX CORP COM45167R104Stock360,063$74,900,305dollars as filed
ARES MANAGEMENT CORPORATION CL A COM STK03990B101Stock727,479$74,835,721dollars as filed
FAIR ISAAC CORP COM303250104Stock85,643$74,383,869dollars as filed
DIAGEO PLC SPON ADR NEW25243Q205ADR495,284$73,886,468dollars as filed
APOLLO GLOBAL MGMT INC COM03769M106Stock822,633$73,839,524dollars as filed
NEUROCRINE BIOSCIENCES INC64125C109COM649,292$73,045,350dollars as filed
MGM RESORTS INTERNATIONAL552953101COM1,984,496$72,950,088dollars as filed
Progressive Corporation743315103COM522,746$72,818,507dollars as filed
Uber Technologies90353T100COM1,577,631$72,555,243dollars as filed
AMERIPRISE FINL INC COM03076C106Stock219,178$72,258,556dollars as filed
FIVE BELOW INC COM33829M101Stock443,081$71,291,733dollars as filed
DECKERS OUTDOOR CORP243537107COM135,105$69,456,129dollars as filed
TRANSUNION COM89400J107Stock967,445$69,452,877dollars as filed
SUN CMNTYS INC COM866674104REIT576,833$68,262,417dollars as filed
S&P Global,Inc.78409V104COM186,231$68,050,581dollars as filed
TEXAS ROADHOUSE INC COM882681109Stock703,046$67,562,721dollars as filed
PALO ALTO NETWORKS INC697435105COM287,981$67,514,163dollars as filed
PPG INDS INC COM693506107Stock515,948$66,970,082dollars as filed
OVINTIV INC69047Q102COM1,403,007$66,741,043dollars as filed
WATSCO INC COM942622200Stock176,533$66,680,034dollars as filed
CDW CORP COM12514G108Stock328,984$66,375,796dollars as filed
DEVON ENERGY CORP NEW COM25179M103Stock1,356,705$64,714,815dollars as filed
MICROCHIP TECHNOLOGY INC. COM595017104Stock817,206$63,782,959dollars as filed
IDEXX LABS INC COM45168D104Stock145,612$63,671,737dollars as filed
ALIGN TECHNOLOGY INC COM016255101Stock207,956$63,493,235dollars as filed
VULCAN MATLS CO COM929160109Stock310,031$62,632,435dollars as filed
LULULEMON ATHLETICA INC550021109COM162,299$62,583,984dollars as filed
Walmart Inc.931142103COM389,282$62,257,872dollars as filed
BLUE OWL CAPITAL INC COM CL A09581B103Stock4,629,423$59,997,322dollars as filed
ITT INC COM45073V108Stock602,444$58,985,292dollars as filed
TAPESTRY INC COM876030107Stock2,028,083$58,307,383dollars as filed
NEW YORK COMMUNITY BANCORP649445103COM5,135,955$58,241,730dollars as filed
PTC INC COM69370C100Stock410,467$58,154,965dollars as filed
HILTON WORLDWIDE HLDGS INC COM43300A203Stock378,231$56,802,787dollars as filed
NORTHERN OIL & GAS INC COM665531307Stock1,406,271$56,574,282dollars as filed
OKTAINCCLASSA679295105STOK690,334$56,269,124dollars as filed
IMPINJ INC453204109COM1,022,359$56,260,416dollars as filed
RED ROCK RESORTS INC75700L108CL A1,354,249$55,524,209dollars as filed
THE COOPER COMPANIES216648402COM NEW173,324$55,118,672dollars as filed
PERMIAN RESOURCES CORP CLASS A COM71424F105Stock3,921,499$54,744,126dollars as filed
ZSCALERINC98980G102STOK346,083$53,847,081dollars as filed
Advanced Micro Devices,Inc.007903107COM516,866$53,144,166dollars as filed
GE HEALTHCARE TECHNOLOGIES INC COMMON STOCK36266G107Stock780,145$53,081,033dollars as filed
MASIMO CORP COM574795100Stock603,681$52,930,772dollars as filed
TRADEWEB MKTS INC CL A892672106Stock656,485$52,650,097dollars as filed
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock646,208$52,640,104dollars as filed
COSTAR GROUP INC COM22160N109Stock667,521$51,325,687dollars as filed
VAXCYTE INC COM92243G108Stock1,003,916$51,179,638dollars as filed
WNS HOLDINGS LTD92932M101SPON ADR741,793$50,783,149dollars as filed
HAEMONETICS CORP MASS COM405024100Stock559,963$50,161,486dollars as filed
WASTE CONNECTIONS INC COM94106B101Stock372,284$49,997,723dollars as filed
SPIRIT RLTY CAP INC NEW NPV84860W300COM NEW1,483,413$49,738,838dollars as filed
MONGODB INC CL A60937P106Stock143,368$49,585,357dollars as filed
ARISTA NETWORKS INC040413106COM268,368$49,360,927dollars as filed
BIO-TECHNE CORP09073M104COM699,662$47,625,967dollars as filed
APTIV PLCG6095L109SHS477,636$47,090,120dollars as filed
ALKERMES PLCG01767105SHS1,669,613$46,765,860dollars as filed
VERTIV HOLDINGS CO COM CL A92537N108Stock1,249,534$46,482,665dollars as filed
BOOZ ALLEN HAMILTON HLDG CORP CL A099502106Stock425,074$46,447,836dollars as filed
KINSALECAPGROUPINC49714P108STOK110,862$45,911,280dollars as filed
CASELLA WASTE SYS INC147448104CL A591,703$45,146,939dollars as filed
DATADOGINCCLASSA23804L103STOK493,343$44,938,612dollars as filed
POOL CORP COM73278L105Stock121,201$43,159,676dollars as filed
PRIMERICA INC74164M108COM219,886$42,660,083dollars as filed
MERITAGE HOMES CORP COM59001A102Stock340,662$41,693,622dollars as filed
DIAMONDBACK ENERGY INC COM25278X109Stock264,791$41,010,827dollars as filed
SAMSARA INC COM CL A79589L106Stock1,613,516$40,676,738dollars as filed
AMERICOLD REALTY TRUST INC COM03064D108REIT1,332,669$40,526,464dollars as filed
NETAPP INC COM64110D104Stock533,589$40,488,768dollars as filed
AXCELIS TECHNOLOGIES INC054540208COM NEW247,928$40,424,660dollars as filed
CABLE ONE INC12685J105COM65,140$40,102,790dollars as filed
REPLIGEN CORP COM759916109Stock244,495$38,877,150dollars as filed
SHIFT4 PMTS INC CL A82452J109Stock693,578$38,403,414dollars as filed
PATTERSON-UTI ENERGY INC703481101COM2,684,388$37,151,934dollars as filed
AAON INC000360206COM PAR $0.004639,906$36,391,426dollars as filed
WINGSTOP INC COM974155103Stock200,068$35,980,229dollars as filed
WEX INC96208T104COM191,172$35,957,541dollars as filed
AXALTA COATING SYS LTD COMG0750C108Stock1,322,683$35,580,173dollars as filed
FABRINET SHSG3323L100Stock208,550$34,748,601dollars as filed
AZEK CO INC05478C105CL A1,168,290$34,744,945dollars as filed
CHURCHILL DOWNS INC171484108COM297,025$34,466,781dollars as filed
LIVE NATION ENTERTAINMENT INC COM538034109Stock412,241$34,232,462dollars as filed
EVERPURE INC CL A74624M102Stock954,503$33,999,397dollars as filed
SENSATA TECHNOLOGIES HLDG PLg8060n102SHS888,854$33,616,458dollars as filed
AVIENT CORPORATION05368V106COM949,317$33,529,876dollars as filed
ESSEX PPTY TR INC COM297178105REIT149,886$31,789,323dollars as filed
SENTINELONE INC81730H109CL A1,885,443$31,788,569dollars as filed
VERADIGM INC01988P108COMMON STOCK2,401,754$31,559,048dollars as filed
CALIX INC13100M509COM679,187$31,133,932dollars as filed
MARQETA INC57142B104CLASS A COM5,074,757$30,347,047dollars as filed
HALLIBURTON CO COM406216101Stock748,936$30,331,898dollars as filed
STEPSTONE GROUP INC85914M107COM CL A913,069$28,834,719dollars as filed
UNIVERSAL DISPLAY CORP91347P105COM177,304$27,834,955dollars as filed
INNOVIVA INC45781M101COM2,045,010$26,564,680dollars as filed
CHAMPIONX CORPORATION15872M104COM700,453$24,950,136dollars as filed
STAG INDUSTRIAL INC85254J102COM691,212$23,853,726dollars as filed
KULICKE & SOFFA INDS INC501242101COM487,571$23,710,578dollars as filed
SUPER MICRO COMPUTER INC86800U104COM85,662$23,490,234dollars as filed
MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD61559X104Stock391,279$22,302,903dollars as filed
PALOMAR HLDGS INC COM69753M105Stock433,346$21,992,310dollars as filed
CEREVEL THERAPEUTICS HLDNG I15678U128COM974,483$21,272,964dollars as filed
APELLIS PHARMACEUTICALS INC03753U106COM548,870$20,879,015dollars as filed
Broadcom Inc.11135F101COM24,978$20,746,227dollars as filed
89BIO INC282559103COM1,311,886$20,255,520dollars as filed
WESCO INTL INC COM95082P105Stock117,245$16,862,208dollars as filed
CRISPR THERAPEUTICS AG NAMEN AKTH17182108Stock297,550$13,505,795dollars as filed
PLEXUS CORP COM729132100Stock142,815$13,278,939dollars as filed
International Business Machines Corporation459200101COM90,209$12,656,323dollars as filed
CAMTEK LTD ORDM20791105Stock194,237$12,093,196dollars as filed
Thermo Fisher Scientific Inc.883556102COM21,481$10,873,038dollars as filed
Alphabet Inc. Reg. Shares C02079K107COM82,119$10,827,390dollars as filed
Cisco Systems,Inc.17275R102COM178,499$9,596,106dollars as filed
PepsiCo,Inc.713448108COM54,876$9,298,189dollars as filed
Merck & Co.,Inc.58933Y105COM86,820$8,938,119dollars as filed
CCC INTELLIGENT SOLUTIONS HLD COM12510Q100Stock651,234$8,693,974dollars as filed
Coca-Cola Company191216100COM147,185$8,239,416dollars as filed
Gilead Sciences,Inc.375558103COM98,888$7,410,667dollars as filed
ILLINOIS TOOL WKS INC452308109COM30,918$7,120,725dollars as filed
EQUINIX INC COM29444U700REIT9,703$7,046,901dollars as filed
NIKE,Inc. Class B654106103COM72,376$6,920,593dollars as filed
NXP SEMICONDUCTORS N V COMN6596X109Stock34,132$6,823,669dollars as filed
BOX INC CL A10316T104Stock281,225$6,808,457dollars as filed
Danaher Corporation235851102COM27,235$6,757,004dollars as filed
Analog Devices,Inc.032654105COM37,700$6,600,893dollars as filed
CINTAS CORP COM172908105Stock13,057$6,280,548dollars as filed
HERSHEY CO COM427866108Stock30,629$6,128,250dollars as filed
Chevron Corporation166764100COM35,560$5,996,127dollars as filed
CUMMINS INC COM231021106Stock25,745$5,881,703dollars as filed
Bank of America Corp060505104COM210,086$5,752,155dollars as filed
EQUITY LIFESTYLE PROPERTIES COM29472R108REIT89,702$5,714,914dollars as filed
MUELLER INDS INC COM624756102Stock74,142$5,572,513dollars as filed
METTLER TOLEDO INTERNATIONAL COM592688105Stock4,926$5,458,353dollars as filed
ARM HOLDINGS PLC042068205SPONSORED ADS100,850$5,397,492dollars as filed
COGENT COMMUNICATIONS GROUP19239V302COM NEW86,681$5,365,554dollars as filed
TRACTOR SUPPLY CO COM892356106Stock25,060$5,088,433dollars as filed
LENNAR CORP CL A526057104Stock44,412$4,984,359dollars as filed
GARTNERINC366651107STOK14,370$4,937,676dollars as filed
ConocoPhillips20825C104COM40,876$4,896,945dollars as filed
McDonalds Corporation580135101COM18,454$4,861,522dollars as filed
CME Group Inc. Class A12572Q105COM23,663$4,737,806dollars as filed
FIRST CTZNS BANCSHARES INC DEL CL A31946M103Stock3,185$4,395,619dollars as filed
RAYMOND JAMES FINL INC COM754730109Stock40,095$4,026,741dollars as filed
CARDINAL HEALTH INC14149Y108COM41,183$3,575,508dollars as filed
TIMKEN CO887389104COM47,820$3,514,292dollars as filed
FERGUSON PLC NEWG3421J106SHS21,158$3,479,856dollars as filed
Automatic Data Processing,Inc.053015103COM14,252$3,428,746dollars as filed
HEICO CORP NEW422806208CL A20,130$2,601,199dollars as filed
RANPAK HOLDINGS CORP75321W103COMMON STOCK442,450$2,406,928dollars as filed
Applied Materials,Inc.038222105COM12,858$1,780,190dollars as filed
DOMO INC257554105COM CL B167,758$1,645,706dollars as filed
CHEESECAKE FACTORY INC163072101COM41,072$1,244,482dollars as filed
CSX Corporation126408103COM28,590$879,143dollars as filed
WILLIAMS COS INC COM969457100Stock23,330$785,988dollars as filed
EMCOR GROUP INC COM29084Q100Stock3,540$744,781dollars as filed
Utilities Select Sector SPDR Fund81369Y886SHS12,320$726,018dollars as filed
TRANE TECHNOLOGIES PLC SHSG8994E103Stock3,559$722,157dollars as filed
Intuit Inc.461202103COM1,410$720,425dollars as filed
Booking Holdings Inc.09857L108COM210$647,630dollars as filed
OLD DOMINION FREIGHT LINE INC COM679580100Stock1,249$511,016dollars as filed
TERRENO RLTY CORP88146M101COM8,840$502,112dollars as filed
EZCORP INC302301106CL A NON VTG59,780$493,185dollars as filed
FLOOR & DECOR HLDGS INC CL A339750101Stock4,500$407,250dollars as filed
NANO DIMENSION LTD63008G203SPONSORD ADS NEW149,070$405,470dollars as filed
NET POWER INC64107A105COMMON STOCK21,880$330,388dollars as filed
ANTERO MIDSTREAM CORP COM03676B102Stock25,720$308,126dollars as filed
LYFT INC55087P104CL A COM26,350$277,729dollars as filed
NATIONAL STORAGE AFFILIATES TR COM SHS BEN IN637870106REIT7,860$249,476dollars as filed
HUMANA INC COM444859102Stock482$234,503dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-23-004307this filing2023-11-13acceptance time not in the bulk data set