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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 2023-06-30, filed 2023-08-11, with 227 holding rows worth $15,739,052,389.

Accession
0001085146-23-003305
Filed
2023-08-11
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q2 2023

A holdings report, 227 entries on the cover page, a total value of $15,739,052,389 stated on the cover page (in dollars after the unit check, H1), rows summing to $15,739,052,389 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 Inc037833100COM2,746,033$532,648,021dollars as filed
Microsoft Corp594918104COM1,381,739$470,537,399dollars as filed
Alphabet Inc. Reg. Shares A02079K305COM3,389,621$405,737,634dollars as filed
ICON PUB LTD CO SHSG4705A100Stock1,377,475$344,644,240dollars as filed
TRANSDIGM GROUP INC COM893641100Stock363,795$325,294,461dollars as filed
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR3,631,712$324,130,268dollars as filed
Amazon.com, Inc023135106COM2,418,239$315,241,636dollars as filed
Visa Inc92826C839COM1,090,906$259,068,357dollars as filed
NVIDIA Corp67066G104COM533,850$225,829,374dollars as filed
BUILDERS FIRSTSOURCE INC COM12008R107Stock1,642,986$223,446,109dollars as filed
FORTINET INC COM34959E109Stock2,856,178$215,898,496dollars as filed
META PLATFORMS INC CL A30303M102COM724,503$207,917,779dollars as filed
UnitedHealth Group Inc91324P102COM425,707$204,611,812dollars as filed
CHIPOTLEMEXICANGRILLI169656105STOK91,804$196,369,624dollars as filed
Eli Lilly and Company532457108COM396,950$186,161,611dollars as filed
INSPIRE MED SYS INC COM457730109Stock563,667$182,988,855dollars as filed
ServiceNow,Inc.81762P102COM311,402$174,998,582dollars as filed
SAIA INC78709Y105COM506,741$173,513,186dollars as filed
AMETEK INC COM031100100Stock1,071,812$173,504,977dollars as filed
HUBSPOTINC443573100STOK318,938$169,703,695dollars as filed
MASIMO CORP COM574795100Stock953,799$156,947,677dollars as filed
BIO RAD LABS INC090572207CL A403,812$153,093,205dollars as filed
LPL FINL HLDGS INC COM50212V100Stock650,449$141,427,206dollars as filed
WESCO INTL INC COM95082P105Stock771,137$138,079,800dollars as filed
Salesforce.com, Inc79466L302COM643,458$135,936,937dollars as filed
DEXCOM INC COM252131107Stock1,030,514$132,431,294dollars as filed
FAIR ISAAC CORP COM303250104Stock160,128$129,576,804dollars as filed
WILLSCOT HLDGS CORP971378104COM CL A2,701,192$129,089,966dollars as filed
TEXAS ROADHOUSE INC COM882681109Stock1,149,641$129,081,691dollars as filed
TAPESTRY INC COM876030107Stock2,992,696$128,087,383dollars as filed
MARVELL TECHNOLOGY INC573874104COM2,086,452$124,728,106dollars as filed
OPTION CARE HEALTH INC COM NEW68404L201Stock3,768,278$122,431,352dollars as filed
Home Depot, Inc437076102COM393,274$122,166,635dollars as filed
Costco Wholesale Corporation22160K105COM210,882$113,534,651dollars as filed
INSULET CORP COM45784P101Stock392,339$113,126,901dollars as filed
LINCOLN ELEC HLDGS INC533900106COM561,720$111,574,444dollars as filed
NICE LTD SPONSORED ADR653656108ADR512,803$105,893,917dollars as filed
ROCKWELL AUTOMATION INC COM773903109Stock314,273$103,537,110dollars as filed
F5 INC COM315616102Stock703,360$102,873,434dollars as filed
HUBBELL INC COM443510607Stock310,216$102,855,217dollars as filed
SMARTSHEET INC. (CLASS A)83200N103COM CL A2,595,732$99,312,706dollars as filed
SPLUNK INC848637104COM933,567$99,042,143dollars as filed
Tesla Motors, Inc88160R101COM378,034$98,957,960dollars as filed
FLYWIRE CORPORATION302492103COM VTG3,186,118$98,897,103dollars as filed
AVANTOR INC COM05352A100Stock4,729,799$97,150,078dollars as filed
Progressive Corporation743315103COM730,502$96,696,514dollars as filed
LANTHEUS HLDGS INC516544103COM1,150,597$96,558,100dollars as filed
PALO ALTO NETWORKS INC697435105COM368,318$94,109,058dollars as filed
DEVON ENERGY CORP NEW COM25179M103Stock1,943,888$93,967,560dollars as filed
GENPACT LIMITED SHSG3922B107Stock2,495,821$93,767,980dollars as filed
HEXCEL CORP NEW428291108COM1,231,086$93,587,158dollars as filed
MSCI INC COM55354G100Stock198,714$93,254,410dollars as filed
CADENCE DESIGN SYSTEM INC COM127387108Stock392,128$91,961,921dollars as filed
GALLAGHER ARTHUR J & CO COM363576109Stock411,769$90,412,121dollars as filed
ENCORE WIRE CORP292562105COM484,373$90,059,472dollars as filed
CONSTELLATION BRANDS INC CL A21036P108Stock361,802$89,050,331dollars as filed
WORKDAY INC CL A98138H101Stock393,772$88,949,157dollars as filed
MGM RESORTS INTERNATIONAL552953101COM2,003,214$87,981,159dollars as filed
DYNATRACE INC COM NEW268150109Stock1,698,742$87,434,251dollars as filed
Cisco Systems,Inc.17275R102COM1,678,528$86,847,039dollars as filed
VISTEON CORP92839U206COM NEW598,544$85,956,904dollars as filed
TENABLE HLDGS INC88025T102COM1,967,115$85,667,858dollars as filed
Union Pacific Corporation907818108COM416,147$85,151,999dollars as filed
DIAGEO PLC SPON ADR NEW25243Q205ADR486,558$84,408,082dollars as filed
BRP INC COM SUN VTG05577W200Stock986,700$83,474,820dollars as filed
MICROCHIP TECHNOLOGY INC. COM595017104Stock900,653$80,689,521dollars as filed
GLOBAL PMTS INC37940X102COM809,275$79,729,748dollars as filed
DECKERS OUTDOOR CORP243537107COM149,687$78,983,842dollars as filed
FIVE BELOW INC COM33829M101Stock396,562$77,940,295dollars as filed
CELANESE CORP DEL COM150870103Stock667,215$77,263,487dollars as filed
COSTAR GROUP INC COM22160N109Stock863,471$76,848,939dollars as filed
AVERY DENNISON CORP COM053611109Stock445,179$76,481,752dollars as filed
CERIDIAN HCM HLDG INC15677J108COM1,141,756$76,463,367dollars as filed
WATSCO INC COM942622200Stock199,023$75,921,485dollars as filed
IDEX CORP COM45167R104Stock350,797$75,512,562dollars as filed
DIAMONDBACK ENERGY INC COM25278X109Stock571,721$75,101,271dollars as filed
POOL CORP COM73278L105Stock198,641$74,418,864dollars as filed
AMERIPRISE FINL INC COM03076C106Stock223,412$74,208,682dollars as filed
TRANSUNION COM89400J107Stock944,671$73,996,079dollars as filed
HILTON WORLDWIDE HLDGS INC COM43300A203Stock508,138$73,959,465dollars as filed
SUN CMNTYS INC COM866674104REIT563,748$73,546,564dollars as filed
LULULEMON ATHLETICA INC550021109COM192,813$72,979,602dollars as filed
ROCKET PHARMACEUTICALS INC77313F106COM3,655,787$72,640,488dollars as filed
RED ROCK RESORTS INC75700L108CL A1,551,186$72,564,481dollars as filed
ALKERMES PLCG01767105SHS2,315,310$72,469,203dollars as filed
ARES MANAGEMENT CORPORATION CL A COM STK03990B101Stock750,632$72,323,420dollars as filed
VULCAN MATLS CO COM929160109Stock320,688$72,295,842dollars as filed
PPG INDS INC COM693506107Stock466,455$69,175,277dollars as filed
THE COOPER COMPANIES216648402COM NEW179,902$68,979,985dollars as filed
PAYLOCITY HLDG CORP COM70438V106Stock372,736$68,780,974dollars as filed
Uber Technologies90353T100COM1,586,966$68,509,322dollars as filed
LEGEND BIOTECH CORP52490G102SPONSORED ADS972,054$67,100,857dollars as filed
S&P Global,Inc.78409V104COM166,078$66,579,155dollars as filed
SAREPTA THERAPEUTICS INC803607100COM575,782$65,938,572dollars as filed
IMPINJ INC453204109COM729,889$65,434,549dollars as filed
IDEXX LABS INC COM45168D104Stock130,079$65,329,799dollars as filed
HUNT J B TRANS SVCS INC COM445658107Stock351,574$63,645,429dollars as filed
COPART INC COM217204106Stock691,310$63,054,341dollars as filed
Walmart Inc.931142103COM399,987$62,869,906dollars as filed
ALIGN TECHNOLOGY INC COM016255101Stock176,706$62,490,284dollars as filed
WINGSTOP INC COM974155103Stock307,664$61,582,026dollars as filed
MONGODB INC CL A60937P106Stock148,661$61,098,243dollars as filed
CDW CORP COM12514G108Stock327,726$60,137,678dollars as filed
NETAPP INC COM64110D104Stock781,914$59,738,243dollars as filed
Applied Materials,Inc.038222105COM405,687$58,637,999dollars as filed
PTC INC COM69370C100Stock401,095$57,075,819dollars as filed
WASTE CONNECTIONS INC COM94106B101Stock385,630$55,118,100dollars as filed
APELLIS PHARMACEUTICALS INC03753U106COM596,232$54,316,735dollars as filed
TERADYNE INC COM880770102Stock487,320$54,253,336dollars as filed
LUMENTUM HLDGS INC COM55024U109Stock945,342$53,629,252dollars as filed
FMC CORP COM NEW302491303Stock511,805$53,401,734dollars as filed
OVINTIV INC69047Q102COM1,376,035$52,385,652dollars as filed
ITT INC COM45073V108Stock561,832$52,368,361dollars as filed
ZSCALERINC98980G102STOK355,503$52,010,083dollars as filed
FLEETCOR TECHNOLOGIES INC339041105COM206,620$51,878,150dollars as filed
AAON INC000360206COM PAR $0.004541,030$51,295,054dollars as filed
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock548,660$50,723,617dollars as filed
APTIV PLCG6095L109SHS493,001$50,330,495dollars as filed
CASELLA WASTE SYS INC147448104CL A552,187$49,945,314dollars as filed
BIO-TECHNE CORP09073M104COM607,141$49,560,932dollars as filed
AMERICAN INTL GROUP INC COM NEW026874784Stock860,251$49,498,838dollars as filed
SPIRIT RLTY CAP INC NEW NPV84860W300COM NEW1,236,767$48,703,884dollars as filed
VAIL RESORTS INC COM91879Q109Stock192,928$48,571,608dollars as filed
ARISTA NETWORKS INC040413106COM295,786$47,935,130dollars as filed
AXONENTERPRISEINC05464C101STOK244,843$47,773,766dollars as filed
BOOZ ALLEN HAMILTON HLDG CORP CL A099502106Stock426,876$47,639,362dollars as filed
PRIMERICA INC74164M108COM235,168$46,506,824dollars as filed
SHIFT4 PMTS INC CL A82452J109Stock674,775$45,823,970dollars as filed
NORTHERN OIL & GAS INC COM665531307Stock1,307,658$44,878,823dollars as filed
KINSALECAPGROUPINC49714P108STOK116,700$43,669,140dollars as filed
Advanced Micro Devices,Inc.007903107COM375,542$42,778,027dollars as filed
OKTAINCCLASSA679295105STOK610,561$42,342,405dollars as filed
FIRST CTZNS BANCSHARES INC DEL CL A31946M103Stock32,264$41,409,231dollars as filed
AXALTA COATING SYS LTD COMG0750C108Stock1,231,136$40,393,572dollars as filed
MARKETAXESS HLDGS INC57060D108COM153,852$40,219,990dollars as filed
MERITAGE HOMES CORP COM59001A102Stock278,113$39,567,137dollars as filed
CHURCHILL DOWNS INC171484108COM283,689$39,480,998dollars as filed
LIVE NATION ENTERTAINMENT INC COM538034109Stock428,530$39,043,345dollars as filed
REPLIGEN CORP COM759916109Stock271,005$38,336,367dollars as filed
CABLE ONE INC12685J105COM57,696$37,910,888dollars as filed
ESSEX PPTY TR INC COM297178105REIT156,161$36,588,551dollars as filed
AVIENT CORPORATION05368V106COM888,522$36,340,550dollars as filed
SAMSARA INC COM CL A79589L106Stock1,286,486$35,648,527dollars as filed
NEUROCRINE BIOSCIENCES INC64125C109COM375,340$35,394,562dollars as filed
HAEMONETICS CORP MASS COM405024100Stock408,819$34,806,850dollars as filed
EVERPURE INC CL A74624M102Stock928,601$34,191,089dollars as filed
ETSY INC29786A106COM377,817$31,967,125dollars as filed
PLANET FITNESS MASTER ISSUER L CL A72703H101Stock471,522$31,799,444dollars as filed
BOX INC CL A10316T104Stock1,059,557$31,129,785dollars as filed
UNIVERSAL DISPLAY CORP91347P105COM210,003$30,267,732dollars as filed
AZENTA INC114340102COM644,791$30,098,844dollars as filed
NEXTIER OILFIELD SOLUTIONS INC65290C105COMMON STOCK3,339,174$29,852,216dollars as filed
WNS HOLDINGS LTD92932M101SPON ADR398,871$29,404,770dollars as filed
VERADIGM INC01988P108COMMON STOCK2,236,112$28,175,011dollars as filed
WEX INC96208T104COM150,147$27,337,264dollars as filed
SENTINELONE INC81730H109CL A1,767,167$26,684,222dollars as filed
CALIX INC13100M509COM531,402$26,522,274dollars as filed
ONTO INNOVATION INC COM683344105Stock226,199$26,345,398dollars as filed
HALLIBURTON CO COM406216101Stock777,473$25,648,847dollars as filed
MACOM TECH SOLUTIONS HLDGS INC COM55405Y100Stock391,368$25,646,345dollars as filed
Qualcomm Incorporated747525103COM215,334$25,633,359dollars as filed
Thermo Fisher Scientific Inc.883556102COM48,613$25,363,833dollars as filed
SENSATA TECHNOLOGIES HLDG PLg8060n102SHS549,387$24,716,921dollars as filed
INNOVIVA INC45781M101COM1,917,251$24,406,605dollars as filed
STAG INDUSTRIAL INC85254J102COM653,938$23,463,295dollars as filed
NEW YORK COMMUNITY BANCORP649445103COM2,021,885$22,725,987dollars as filed
KULICKE & SOFFA INDS INC501242101COM368,191$21,888,955dollars as filed
FABRINET SHSG3323L100Stock166,669$21,646,970dollars as filed
STEPSTONE GROUP INC85914M107COM CL A871,852$21,630,648dollars as filed
MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD61559X104Stock410,119$20,916,069dollars as filed
Broadcom Inc.11135F101COM24,088$20,894,654dollars as filed
CHAMPIONX CORPORATION15872M104COM650,105$20,179,259dollars as filed
PALOMAR HLDGS INC COM69753M105Stock343,936$19,962,045dollars as filed
CEREVEL THERAPEUTICS HLDNG I15678U128COM575,534$18,296,226dollars as filed
NATIONAL VISION HLDGS INC COM63845R107Stock670,232$16,279,935dollars as filed
89BIO INC282559103COM835,231$15,827,627dollars as filed
International Business Machines Corporation459200101COM84,815$11,349,095dollars as filed
Alphabet Inc. Reg. Shares C02079K107COM82,189$9,942,403dollars as filed
PepsiCo,Inc.713448108COM51,446$9,528,828dollars as filed
Merck & Co.,Inc.58933Y105COM81,399$9,392,631dollars as filed
Coca-Cola Company191216100COM138,056$8,313,732dollars as filed
TRANE TECHNOLOGIES PLC SHSG8994E103Stock42,642$8,155,709dollars as filed
NIKE,Inc. Class B654106103COM67,714$7,473,594dollars as filed
Gilead Sciences,Inc.375558103COM92,751$7,148,320dollars as filed
Danaher Corporation235851102COM29,294$7,030,560dollars as filed
METTLER TOLEDO INTERNATIONAL COM592688105Stock5,318$6,975,302dollars as filed
TARGET CORP COM87612E106Stock48,178$6,354,678dollars as filed
HERSHEY CO COM427866108Stock24,943$6,228,267dollars as filed
MUELLER INDS INC COM624756102Stock68,960$6,018,829dollars as filed
CUMMINS INC COM231021106Stock24,113$5,911,543dollars as filed
Bank of America Corp060505104COM199,496$5,723,540dollars as filed
EQUITY LIFESTYLE PROPERTIES COM29472R108REIT84,195$5,631,804dollars as filed
United Parcel Service,Inc. Class B911312106COM30,883$5,535,778dollars as filed
COGENT COMMUNICATIONS GROUP19239V302COM NEW81,687$5,496,718dollars as filed
CINTAS CORP COM172908105Stock10,375$5,157,205dollars as filed
TRACTOR SUPPLY CO COM892356106Stock23,276$5,146,324dollars as filed
McDonalds Corporation580135101COM17,177$5,125,789dollars as filed
GARTNERINC366651107STOK14,370$5,033,955dollars as filed
Analog Devices,Inc.032654105COM25,571$4,981,487dollars as filed
TIMKEN CO887389104COM47,820$4,376,965dollars as filed
RAYMOND JAMES FINL INC COM754730109Stock40,095$4,160,658dollars as filed
CME Group Inc. Class A12572Q105COM22,012$4,078,603dollars as filed
ILLINOIS TOOL WKS INC452308109COM15,982$3,998,057dollars as filed
Chevron Corporation166764100COM23,792$3,743,671dollars as filed
BHP BILLITON LIMITED SPONSORED ADS088606108ADR57,716$3,443,914dollars as filed
SILGAN HLDGS INC827048109COM61,079$2,863,994dollars as filed
HEICO CORP NEW422806208CL A20,130$2,830,278dollars as filed
TELEDYNE TECHNOLOGIES INC COM879360105Stock4,882$2,007,039dollars as filed
RANPAK HOLDINGS CORP75321W103COMMON STOCK402,200$1,817,944dollars as filed
SILICON MOTION TECHNOLOGY CORP SPONSORED ADR82706C108ADR23,670$1,700,926dollars as filed
CHEESECAKE FACTORY INC163072101COM41,072$1,420,270dollars as filed
CSX Corporation126408103COM28,590$974,919dollars as filed
KARUNA THERAPEUTICS INC48576A100COM4,420$958,477dollars as filed
WILLIAMS COS INC COM969457100Stock23,330$761,258dollars as filed
AZEK CO INC05478C105CL A22,510$681,828dollars as filed
TRUIST FINL CORP COM89832Q109Stock21,720$659,202dollars as filed
EMCOR GROUP INC COM29084Q100Stock3,540$654,121dollars as filed
Intuit Inc.461202103COM1,410$646,048dollars as filed
ConocoPhillips20825C104COM6,040$625,804dollars as filed
Booking Holdings Inc.09857L108COM210$567,069dollars as filed
TERRENO RLTY CORP88146M101COM8,840$531,284dollars as filed
AMERICAN FINANCIAL GROUP INC COM025932104Stock4,242$503,738dollars as filed
EZCORP INC302301106CL A NON VTG59,780$500,956dollars as filed
FLOOR & DECOR HLDGS INC CL A339750101Stock4,500$467,820dollars as filed
OLD DOMINION FREIGHT LINE INC COM679580100Stock1,249$461,818dollars as filed
NANO DIMENSION LTD63008G203SPONSORD ADS NEW149,070$430,812dollars as filed
NATIONAL STORAGE AFFILIATES TR COM SHS BEN IN637870106REIT7,860$273,764dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-23-003305this filing2023-08-11acceptance time not in the bulk data set