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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 2023-12-31, filed 2024-02-09, with 239 holding rows worth $17,157,520,118.

Accession
0001085146-24-001000
Filed
2024-02-09
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q4 2023

A holdings report, 239 entries on the cover page, a total value of $17,157,520,118 stated on the cover page (in dollars after the unit check, H1), rows summing to $17,157,520,118 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
Microsoft Corp594918104COM1,557,889$585,828,685dollars as filed
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR4,030,634$507,658,290dollars as filed
Apple Inc037833100COM2,492,864$479,951,050dollars as filed
Alphabet Inc. Reg. Shares A02079K305COM3,248,331$453,759,368dollars as filed
Amazon.com, Inc023135106COM2,334,901$354,764,821dollars as filed
TRANSDIGM GROUP INC COM893641100Stock320,175$323,889,383dollars as filed
NVIDIA Corp67066G104COM595,833$295,068,218dollars as filed
Visa Inc92826C839COM1,086,319$282,823,253dollars as filed
META PLATFORMS INC CL A30303M102COM724,433$256,420,202dollars as filed
BUILDERS FIRSTSOURCE INC COM12008R107Stock1,416,611$236,489,030dollars as filed
DEXCOM INC COM252131107Stock1,857,286$230,470,674dollars as filed
UnitedHealth Group Inc91324P102COM435,077$229,055,151dollars as filed
ServiceNow,Inc.81762P102COM296,250$209,297,631dollars as filed
AXONENTERPRISEINC05464C101STOK731,721$189,025,432dollars as filed
SAIA INC78709Y105COM376,409$164,949,952dollars as filed
M/I HOMES INC55305B101COM1,184,431$163,143,526dollars as filed
AMETEK INC COM031100100Stock979,840$161,565,837dollars as filed
Salesforce.com, Inc79466L302COM608,116$160,019,548dollars as filed
ICON PUB LTD CO SHSG4705A100Stock558,847$158,192,888dollars as filed
INSULET CORP COM45784P101Stock705,429$153,064,036dollars as filed
OPTION CARE HEALTH INC COM NEW68404L201Stock4,482,732$151,023,241dollars as filed
LINCOLN ELEC HLDGS INC533900106COM687,841$149,577,904dollars as filed
MARVELL TECHNOLOGY INC573874104COM2,419,659$145,929,654dollars as filed
Home Depot, Inc437076102COM381,839$132,326,236dollars as filed
AbbVie,Inc.00287Y109COM839,739$130,134,322dollars as filed
SMARTSHEET INC. (CLASS A)83200N103COM CL A2,706,943$129,446,014dollars as filed
AVANTOR INC COM05352A100Stock5,418,922$123,713,996dollars as filed
COSTAR GROUP INC COM22160N109Stock1,398,896$122,249,494dollars as filed
Costco Wholesale Corporation22160K105COM185,146$122,211,156dollars as filed
WILLSCOT HLDGS CORP971378104COM CL A2,719,656$121,024,692dollars as filed
ROCKET PHARMACEUTICALS INC77313F106COM3,941,859$118,137,514dollars as filed
NICE LTD SPONSORED ADR653656108ADR579,249$115,565,983dollars as filed
HUBSPOTINC443573100STOK192,010$111,469,393dollars as filed
INSPIRE MED SYS INC COM457730109Stock545,619$110,995,273dollars as filed
GLOBAL PMTS INC37940X102COM866,920$110,098,898dollars as filed
Uber Technologies90353T100COM1,776,923$109,405,148dollars as filed
MGM RESORTS INTERNATIONAL552953101COM2,401,407$107,294,880dollars as filed
LEGEND BIOTECH CORP52490G102SPONSORED ADS1,776,247$106,876,812dollars as filed
DYNATRACE INC COM NEW268150109Stock1,947,452$106,506,150dollars as filed
CONSTELLATION BRANDS INC CL A21036P108Stock435,356$105,247,193dollars as filed
CADENCE DESIGN SYSTEM INC COM127387108Stock383,196$104,371,184dollars as filed
GENPACT LIMITED SHSG3922B107Stock2,992,134$103,856,966dollars as filed
WORKDAY INC CL A98138H101Stock376,037$103,808,638dollars as filed
HEXCEL CORP NEW428291108COM1,403,184$103,484,820dollars as filed
ROSS STORES INC COM778296103Stock737,649$102,083,278dollars as filed
FLYWIRE CORPORATION302492103COM VTG4,386,731$101,552,823dollars as filed
F5 INC COM315616102Stock563,971$100,939,530dollars as filed
Union Pacific Corporation907818108COM408,634$100,368,652dollars as filed
Eli Lilly and Company532457108COM168,330$98,122,952dollars as filed
LPL FINL HLDGS INC COM50212V100Stock428,869$97,619,162dollars as filed
LANTHEUS HLDGS INC516544103COM1,563,181$96,917,222dollars as filed
ROCKWELL AUTOMATION INC COM773903109Stock311,454$96,700,087dollars as filed
MASIMO CORP COM574795100Stock818,476$95,933,553dollars as filed
AVERY DENNISON CORP COM053611109Stock468,217$94,654,749dollars as filed
TEXAS ROADHOUSE INC COM882681109Stock768,526$93,936,933dollars as filed
AMERICAN INTL GROUP INC COM NEW026874784Stock1,381,419$93,591,128dollars as filed
HUBBELL INC COM443510607Stock284,235$93,493,419dollars as filed
FAIR ISAAC CORP COM303250104Stock79,063$92,029,934dollars as filed
Progressive Corporation743315103COM576,800$91,872,673dollars as filed
VAXCYTE INC COM92243G108Stock1,455,593$91,411,240dollars as filed
ZSCALERINC98980G102STOK412,063$91,296,617dollars as filed
CHIPOTLEMEXICANGRILLI169656105STOK39,779$90,973,874dollars as filed
IDEXX LABS INC COM45168D104Stock161,104$89,420,750dollars as filed
COPART INC COM217204106Stock1,820,250$89,192,266dollars as filed
VERTIV HOLDINGS CO COM CL A92537N108Stock1,835,806$88,173,762dollars as filed
COMFORT SYS USA INC COM199908104Stock426,570$87,732,652dollars as filed
HUNT J B TRANS SVCS INC COM445658107Stock438,407$87,567,421dollars as filed
CDW CORP COM12514G108Stock377,205$85,746,264dollars as filed
PTC INC COM69370C100Stock487,544$85,300,698dollars as filed
Tesla Motors, Inc88160R101COM341,446$84,842,425dollars as filed
MSCI INC COM55354G100Stock148,123$83,785,721dollars as filed
SUN CMNTYS INC COM866674104REIT626,591$83,743,887dollars as filed
FIVE BELOW INC COM33829M101Stock390,308$83,198,053dollars as filed
GALLAGHER ARTHUR J & CO COM363576109Stock368,976$82,975,228dollars as filed
CELANESE CORP DEL COM150870103Stock523,002$81,258,758dollars as filed
IDEX CORP COM45167R104Stock370,805$80,505,474dollars as filed
BIO RAD LABS INC090572207CL A247,210$79,821,637dollars as filed
PAYLOCITY HLDG CORP COM70438V106Stock483,015$79,625,023dollars as filed
TENABLE HLDGS INC88025T102COM1,704,735$78,520,094dollars as filed
CERIDIAN HCM HLDG INC15677J108COM1,169,029$78,465,229dollars as filed
ARES MANAGEMENT CORPORATION CL A COM STK03990B101Stock659,029$78,371,690dollars as filed
NEUROCRINE BIOSCIENCES INC64125C109COM594,437$78,323,019dollars as filed
WATSCO INC COM942622200Stock181,060$77,578,818dollars as filed
ITT INC COM45073V108Stock642,965$76,718,584dollars as filed
McDonalds Corporation580135101COM258,231$76,568,005dollars as filed
TAPESTRY INC COM876030107Stock2,075,458$76,397,601dollars as filed
PPG INDS INC COM693506107Stock508,874$76,102,108dollars as filed
MERITAGE HOMES CORP COM59001A102Stock432,310$75,308,402dollars as filed
APOLLO GLOBAL MGMT INC COM03769M106Stock807,996$75,297,101dollars as filed
RED ROCK RESORTS INC75700L108CL A1,386,676$73,951,431dollars as filed
VULCAN MATLS CO COM929160109Stock318,371$72,273,430dollars as filed
HILTON WORLDWIDE HLDGS INC COM43300A203Stock387,679$70,592,383dollars as filed
S&P Global,Inc.78409V104COM157,421$69,347,009dollars as filed
EAST WEST BANCORP INC COM27579R104Stock940,815$67,691,639dollars as filed
PALO ALTO NETWORKS INC697435105COM229,369$67,636,330dollars as filed
THE COOPER COMPANIES216648402COM NEW177,274$67,087,700dollars as filed
SAMSARA INC COM CL A79589L106Stock1,985,589$66,278,961dollars as filed
WNS HOLDINGS LTD92932M101SPON ADR1,042,815$65,905,908dollars as filed
Advanced Micro Devices,Inc.007903107COM437,891$64,549,508dollars as filed
PERMIAN RESOURCES CORP CLASS A COM71424F105Stock4,745,073$64,532,993dollars as filed
BRP INC COM SUN VTG05577W200Stock896,344$64,258,901dollars as filed
CASELLA WASTE SYS INC147448104CL A751,553$64,227,719dollars as filed
WINGSTOP INC COM974155103Stock250,016$64,149,105dollars as filed
SENTINELONE INC81730H109CL A2,325,714$63,817,592dollars as filed
OVINTIV INC69047Q102COM1,447,248$63,563,132dollars as filed
BLUE OWL CAPITAL INC COM CL A09581B103Stock4,251,539$63,347,931dollars as filed
Walmart Inc.931142103COM396,796$62,554,861dollars as filed
GE HEALTHCARE TECHNOLOGIES INC COMMON STOCK36266G107Stock807,725$62,453,284dollars as filed
DATADOGINCCLASSA23804L103STOK511,031$62,028,917dollars as filed
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock657,685$61,980,234dollars as filed
HAEMONETICS CORP MASS COM405024100Stock712,061$60,888,336dollars as filed
MKS INC. COM55306N104Stock589,715$60,663,988dollars as filed
DECKERS OUTDOOR CORP243537107COM90,502$60,494,252dollars as filed
PROCORE TECHNOLOGIES INC COM74275K108Stock871,057$60,294,543dollars as filed
MONGODB INC CL A60937P106Stock147,377$60,255,282dollars as filed
DRAFTKINGS INC NEW26142V105COM CL A1,687,008$59,467,015dollars as filed
MONDAY COM LTD SHSM7S64H106Stock312,490$58,688,747dollars as filed
SHIFT4 PMTS INC CL A82452J109Stock771,545$57,356,655dollars as filed
NORTHERN OIL & GAS INC COM665531307Stock1,537,719$57,003,243dollars as filed
EQUINIX INC COM29444U700REIT70,726$56,961,849dollars as filed
WASTE CONNECTIONS INC COM94106B101Stock381,501$56,946,649dollars as filed
AXALTA COATING SYS LTD COMG0750C108Stock1,671,875$56,793,594dollars as filed
MICROCHIP TECHNOLOGY INC. COM595017104Stock625,983$56,451,161dollars as filed
INSIGHT ENTERPRISES INC45765U103COM316,766$56,127,768dollars as filed
SENSATA TECHNOLOGIES HLDG PLg8060n102SHS1,489,729$55,969,119dollars as filed
Charles Schwab Corp808513105COM813,015$55,935,406dollars as filed
AZEK CO INC05478C105CL A1,462,185$55,928,576dollars as filed
IMPINJ INC453204109COM616,441$55,498,183dollars as filed
DIAMONDBACK ENERGY INC COM25278X109Stock351,914$54,574,869dollars as filed
KINSALECAPGROUPINC49714P108STOK160,376$53,711,526dollars as filed
SBA COMMUNICATIONS CORP CL A78410G104REIT211,594$53,679,329dollars as filed
REPLIGEN CORP COM759916109Stock294,222$52,901,116dollars as filed
CHURCHILL DOWNS INC171484108COM376,252$50,767,682dollars as filed
FABRINET SHSG3323L100Stock264,892$50,416,894dollars as filed
AVIENT CORPORATION05368V106COM1,201,508$49,946,688dollars as filed
POOL CORP COM73278L105Stock125,017$49,845,528dollars as filed
Broadcom Inc.11135F101COM44,005$49,120,581dollars as filed
WESTERN DIGITAL CORP958102105COM925,458$48,466,251dollars as filed
ALIGN TECHNOLOGY INC COM016255101Stock176,345$48,318,601dollars as filed
PRIMERICA INC74164M108COM229,084$47,136,324dollars as filed
LULULEMON ATHLETICA INC550021109COM90,781$46,415,246dollars as filed
ALKERMES PLCG01767105SHS1,625,783$45,099,220dollars as filed
OKTAINCCLASSA679295105STOK493,029$44,633,915dollars as filed
EVERPURE INC CL A74624M102Stock1,246,731$44,458,427dollars as filed
WEX INC96208T104COM228,078$44,372,575dollars as filed
TRADEWEB MKTS INC CL A892672106Stock484,355$44,018,182dollars as filed
APTIV PLCG6095L109SHS489,663$43,932,597dollars as filed
MACOM TECH SOLUTIONS HLDGS INC COM55405Y100Stock460,052$42,761,833dollars as filed
DEVON ENERGY CORP NEW COM25179M103Stock937,848$42,484,510dollars as filed
INNOVIVA INC45781M101COM2,614,127$41,930,597dollars as filed
AMERIPRISE FINL INC COM03076C106Stock109,519$41,598,735dollars as filed
ENPHASE ENERGY INC COM29355A107Stock310,789$41,067,676dollars as filed
AAON INC000360206COM PAR $0.004553,545$40,890,369dollars as filed
MARQETA INC57142B104CLASS A COM5,814,628$40,586,103dollars as filed
TRANSUNION COM89400J107Stock583,194$40,071,260dollars as filed
LIVE NATION ENTERTAINMENT INC COM538034109Stock422,690$39,563,790dollars as filed
ZEBRA TECHNOLOGIES CORPORATION CL A989207105Stock141,543$38,688,036dollars as filed
BOOZ ALLEN HAMILTON HLDG CORP CL A099502106Stock301,128$38,517,282dollars as filed
REGAL REXNORD CORPORATION758750103COM255,153$37,767,747dollars as filed
PATTERSON-UTI ENERGY INC703481101COM3,431,648$37,061,798dollars as filed
MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD61559X104Stock612,050$36,961,700dollars as filed
REXFORD INDL RLTY INC COM76169C100REIT639,984$35,903,102dollars as filed
HALLIBURTON CO COM406216101Stock967,163$34,962,943dollars as filed
KULICKE & SOFFA INDS INC501242101COM620,124$33,933,185dollars as filed
STAG INDUSTRIAL INC85254J102COM861,268$33,813,382dollars as filed
CEREVEL THERAPEUTICS HLDNG I15678U128COM785,494$33,304,946dollars as filed
PLEXUS CORP COM729132100Stock298,262$32,251,070dollars as filed
WINTRUST FINL CORP COM97650W108Stock337,107$31,266,674dollars as filed
CCC INTELLIGENT SOLUTIONS HLD COM12510Q100Stock2,711,038$30,878,723dollars as filed
LATTICE SEMICONDUCTOR CORP COM518415104Stock442,018$30,494,822dollars as filed
UNIVERSAL DISPLAY CORP91347P105COM159,153$30,439,603dollars as filed
CALIX INC13100M509COM681,620$29,779,978dollars as filed
LUMENTUM HLDGS INC COM55024U109Stock566,100$29,674,962dollars as filed
AXCELIS TECHNOLOGIES INC054540208COM NEW212,888$27,609,445dollars as filed
CHAMPIONX CORPORATION15872M104COM891,381$26,037,239dollars as filed
PALOMAR HLDGS INC COM69753M105Stock460,545$25,560,248dollars as filed
SILICON MOTION TECHNOLOGY CORP SPONSORED ADR82706C108ADR408,149$25,007,289dollars as filed
NEXTPOWER INC CLASS A COM65290E101Stock463,082$21,695,392dollars as filed
CAMTEK LTD ORDM20791105Stock284,845$19,762,546dollars as filed
89BIO INC282559103COM1,761,148$19,672,023dollars as filed
HARMONIC INC413160102COM1,476,793$19,257,381dollars as filed
BICYCLE THERAPEUTICS PLC-ADR088786108SPONSORED ADS917,304$16,584,856dollars as filed
CYMABAY THERAPEUTICS INC23257D103COM700,056$16,535,323dollars as filed
International Business Machines Corporation459200101COM92,046$15,054,123dollars as filed
SUPER MICRO COMPUTER INC86800U104COM46,259$13,149,583dollars as filed
MURAL ONCOLOGY PUB LTD COG63365103ORD SHS1,985,886$11,756,445dollars as filed
XENON PHARMACEUTICALS INC COM98420N105Stock237,495$10,939,020dollars as filed
Alphabet Inc. Reg. Shares C02079K107COM73,886$10,412,754dollars as filed
Thermo Fisher Scientific Inc.883556102COM19,062$10,117,919dollars as filed
Coca-Cola Company191216100COM167,638$9,878,907dollars as filed
Merck & Co.,Inc.58933Y105COM87,626$9,552,987dollars as filed
Cisco Systems,Inc.17275R102COM182,299$9,209,745dollars as filed
Gilead Sciences,Inc.375558103COM100,981$8,180,471dollars as filed
CINTAS CORP COM172908105Stock13,323$8,029,239dollars as filed
NXP SEMICONDUCTORS N V COMN6596X109Stock34,861$8,006,874dollars as filed
MUELLER INDS INC COM624756102Stock159,130$7,502,980dollars as filed
Bank of America Corp060505104COM214,916$7,236,222dollars as filed
NEW YORK COMMUNITY BANCORP649445103COM705,254$7,214,748dollars as filed
WILLIAMS SONOMA INC COM969904101Stock35,054$7,073,196dollars as filed
LENNAR CORP CL A526057104Stock45,417$6,768,950dollars as filed
COGENT COMMUNICATIONS GROUP19239V302COM NEW88,263$6,713,284dollars as filed
GARTNERINC366651107STOK14,370$6,482,451dollars as filed
EQUITY LIFESTYLE PROPERTIES COM29472R108REIT91,373$6,445,451dollars as filed
SPIRIT RLTY CAP INC NEW NPV84860W300COM NEW144,244$6,302,020dollars as filed
HERSHEY CO COM427866108Stock30,733$5,729,861dollars as filed
TJX Companies Inc872540109COM60,498$5,675,317dollars as filed
NextEra Energy,Inc.65339F101COM92,628$5,626,225dollars as filed
Chevron Corporation166764100COM35,499$5,295,031dollars as filed
FERGUSON PLC NEWG3421J106SHS27,058$5,224,088dollars as filed
Danaher Corporation235851102COM22,234$5,143,614dollars as filed
CME Group Inc. Class A12572Q105COM24,200$5,096,520dollars as filed
ConocoPhillips20825C104COM43,368$5,033,724dollars as filed
TRACTOR SUPPLY CO COM892356106Stock22,015$4,733,885dollars as filed
FIRST CTZNS BANCSHARES INC DEL CL A31946M103Stock3,185$4,519,419dollars as filed
RAYMOND JAMES FINL INC COM754730109Stock40,095$4,470,593dollars as filed
ICHOR HOLDINGSG4740B105SHS127,750$4,296,233dollars as filed
CARDINAL HEALTH INC14149Y108COM42,123$4,245,998dollars as filed
METTLER TOLEDO INTERNATIONAL COM592688105Stock3,448$4,182,286dollars as filed
TIMKEN CO887389104COM47,820$3,832,773dollars as filed
iShares Core Dividend Growth ETF46434V621SHS63,370$3,410,573dollars as filed
ILLINOIS TOOL WKS INC452308109COM12,752$3,340,259dollars as filed
HEICO CORP NEW422806208CL A20,130$2,867,317dollars as filed
RANPAK HOLDINGS CORP75321W103COMMON STOCK442,450$2,575,059dollars as filed
Applied Materials,Inc.038222105COM9,748$1,579,858dollars as filed
ISHARES CORE S&P U.S. GROWTH ETF464287671ETF12,905$1,343,411dollars as filed
CSX Corporation126408103COM28,590$991,215dollars as filed
Intuit Inc.461202103COM1,410$881,292dollars as filed
TRANE TECHNOLOGIES PLC SHSG8994E103Stock3,559$868,040dollars as filed
WILLIAMS COS INC COM969457100Stock23,330$812,584dollars as filed
Utilities Select Sector SPDR Fund81369Y886SHS12,320$780,226dollars as filed
EMCOR GROUP INC COM29084Q100Stock3,540$762,622dollars as filed
Booking Holdings Inc.09857L108COM210$744,916dollars as filed
TERRENO RLTY CORP88146M101COM8,840$554,003dollars as filed
EZCORP INC302301106CL A NON VTG59,780$522,477dollars as filed
OLD DOMINION FREIGHT LINE INC COM679580100Stock1,249$506,257dollars as filed
ISHARESRUSSELL1000GROWTHETF464287614STOK1,393$422,408dollars as filed
ISHARES TR464287648RUS 2000 GRW ETF1,445$364,458dollars as filed
NANO DIMENSION LTD63008G203SPONSORD ADS NEW149,070$357,768dollars as filed
NATIONAL STORAGE AFFILIATES TR COM SHS BEN IN637870106REIT7,860$325,954dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-24-001000this filing2024-02-09acceptance time not in the bulk data set