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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 2023-03-31, filed 2023-05-12, with 222 holding rows worth $14,150,980,920.

Accession
0001085146-23-002316
Filed
2023-05-12
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q1 2023

A holdings report, 222 entries on the cover page, a total value of $14,150,980,920 stated on the cover page (in dollars after the unit check, H1), rows summing to $14,150,980,920 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 Inc037833100COM2,950,247$486,495,730dollars as filed
Microsoft Corp594918104COM1,397,216$402,817,373dollars as filed
ASCENDIS PHARMA A/S DKK 1.0 AD04351P101SPONSORED ADR3,146,126$337,327,617dollars as filed
Alphabet Inc. Reg. Shares A02079K305COM3,159,901$327,776,531dollars as filed
ICON PUB LTD CO SHSG4705A100Stock1,365,572$291,672,430dollars as filed
TRANSDIGM GROUP INC COM893641100Stock371,149$273,555,127dollars as filed
Visa Inc92826C839COM1,040,932$234,688,529dollars as filed
UnitedHealth Group Inc91324P102COM442,368$209,058,693dollars as filed
Amazon.com, Inc023135106COM1,920,247$198,342,313dollars as filed
CHIPOTLEMEXICANGRILLI169656105STOK112,073$191,453,458dollars as filed
BIO RAD LABS INC090572207CL A385,656$184,736,937dollars as filed
FORTINET INC COM34959E109Stock2,748,726$182,680,309dollars as filed
DEXCOM INC COM252131107Stock1,570,495$182,460,115dollars as filed
AMETEK INC COM031100100Stock1,096,844$159,404,318dollars as filed
ServiceNow,Inc.81762P102COM317,289$147,450,544dollars as filed
HUBSPOTINC443573100STOK339,816$145,696,299dollars as filed
WESCO INTL INC COM95082P105Stock936,287$144,693,750dollars as filed
ENCORE WIRE CORP292562105COM751,887$139,347,218dollars as filed
SAIA INC78709Y105COM501,669$136,494,102dollars as filed
Eli Lilly and Company532457108COM387,564$133,097,229dollars as filed
NVIDIA Corp67066G104COM473,804$131,608,537dollars as filed
Salesforce.com, Inc79466L302COM655,883$131,032,306dollars as filed
TELEDYNE TECHNOLOGIES INC COM879360105Stock288,236$128,945,414dollars as filed
Home Depot, Inc437076102COM432,015$127,496,267dollars as filed
LULULEMON ATHLETICA INC550021109COM344,954$125,628,710dollars as filed
TAPESTRY INC COM876030107Stock2,880,707$124,187,271dollars as filed
Progressive Corporation743315103COM847,730$121,276,254dollars as filed
LPL FINL HLDGS INC COM50212V100Stock593,157$120,055,052dollars as filed
MARVELL TECHNOLOGY INC573874104COM2,755,714$119,322,434dollars as filed
Tesla Motors, Inc88160R101COM552,966$114,718,326dollars as filed
WILLSCOT HLDGS CORP971378104COM CL A2,402,408$112,624,887dollars as filed
SAREPTA THERAPEUTICS INC803607100COM802,658$110,630,405dollars as filed
INSULET CORP COM45784P101Stock342,453$109,228,927dollars as filed
PALO ALTO NETWORKS INC697435105COM538,434$107,546,767dollars as filed
Costco Wholesale Corporation22160K105COM215,399$107,025,301dollars as filed
MGM RESORTS INTERNATIONAL552953101COM2,283,287$101,423,609dollars as filed
GENPACT LIMITED SHSG3922B107Stock2,187,011$101,083,635dollars as filed
HILTON WORLDWIDE HLDGS INC COM43300A203Stock716,923$100,992,892dollars as filed
ALKERMES PLCG01767105SHS3,574,468$100,764,253dollars as filed
ATKORE INC047649108COMMON STOCK704,771$99,006,230dollars as filed
INSPIRE MED SYS INC COM457730109Stock422,648$98,929,217dollars as filed
DEVON ENERGY CORP NEW COM25179M103Stock1,933,809$97,870,088dollars as filed
GALLAGHER ARTHUR J & CO COM363576109Stock509,686$97,508,044dollars as filed
AVANTOR INC COM05352A100Stock4,574,442$96,703,697dollars as filed
NICE LTD SPONSORED ADR653656108ADR418,913$95,885,090dollars as filed
ROCKWELL AUTOMATION INC COM773903109Stock322,262$94,567,667dollars as filed
LINCOLN ELEC HLDGS INC533900106COM558,140$94,381,474dollars as filed
MSCI INC COM55354G100Stock167,326$93,650,527dollars as filed
LANTHEUS HLDGS INC516544103COM1,101,298$90,923,163dollars as filed
MONGODB INC CL A60937P106Stock383,859$89,485,201dollars as filed
DIAGEO PLC SPON ADR NEW25243Q205ADR493,052$89,331,161dollars as filed
Union Pacific Corporation907818108COM437,015$87,953,639dollars as filed
DIAMONDBACK ENERGY INC COM25278X109Stock650,680$87,952,416dollars as filed
Thermo Fisher Scientific Inc.883556102COM150,010$86,461,264dollars as filed
TENABLE HLDGS INC88025T102COM1,793,918$85,229,044dollars as filed
VISTEON CORP92839U206COM NEW539,775$84,652,913dollars as filed
WORKDAY INC CL A98138H101Stock402,327$83,096,619dollars as filed
GLOBAL PMTS INC37940X102COM778,487$81,928,006dollars as filed
CADENCE DESIGN SYSTEM INC COM127387108Stock384,709$80,823,537dollars as filed
CERIDIAN HCM HLDG INC15677J108COM1,102,962$80,758,908dollars as filed
META PLATFORMS INC CL A30303M102COM379,470$80,424,872dollars as filed
MICROCHIP TECHNOLOGY INC. COM595017104Stock913,958$76,571,392dollars as filed
ARES MANAGEMENT CORPORATION CL A COM STK03990B101Stock897,772$74,910,096dollars as filed
FIVE BELOW INC COM33829M101Stock358,366$73,812,645dollars as filed
VULCAN MATLS CO COM929160109Stock429,518$73,688,086dollars as filed
PROMETHEUS BIOSCIENCES INC74349U108COM684,694$73,481,360dollars as filed
IDEX CORP COM45167R104Stock317,218$73,286,875dollars as filed
Cisco Systems,Inc.17275R102COM1,391,223$72,726,182dollars as filed
SUN CMNTYS INC COM866674104REIT506,307$71,328,530dollars as filed
DECKERS OUTDOOR CORP243537107COM157,691$70,889,989dollars as filed
CELANESE CORP DEL COM150870103Stock648,311$70,594,568dollars as filed
PAYPALHLDGSINC70450Y103STOK928,183$70,486,217dollars as filed
BRP INC COM SUN VTG05577W200Stock895,691$70,043,036dollars as filed
COPART INC COM217204106Stock921,737$69,323,859dollars as filed
THE COOPER COMPANIES216648402COM NEW185,078$69,100,632dollars as filed
SPLUNK INC848637104COM712,163$68,282,144dollars as filed
SMARTSHEET INC. (CLASS A)83200N103COM CL A1,402,413$67,035,341dollars as filed
IDEXX LABS INC COM45168D104Stock132,923$66,471,974dollars as filed
POOL CORP COM73278L105Stock191,930$65,724,509dollars as filed
BUILDERS FIRSTSOURCE INC COM12008R107Stock731,158$64,912,207dollars as filed
ATLASSIANCORPCLASSA049468101STOK377,114$64,550,603dollars as filed
AVERY DENNISON CORP COM053611109Stock356,614$63,808,943dollars as filed
OKTAINCCLASSA679295105STOK738,464$63,685,135dollars as filed
CDW CORP COM12514G108Stock324,618$63,264,808dollars as filed
CHEESECAKE FACTORY INC163072101COM1,802,750$63,186,387dollars as filed
HUNT J B TRANS SVCS INC COM445658107Stock359,642$63,102,792dollars as filed
NIKE,Inc. Class B654106103COM514,511$63,099,629dollars as filed
F5 INC COM315616102Stock430,884$62,775,490dollars as filed
ITT INC COM45073V108Stock725,904$62,645,515dollars as filed
RED ROCK RESORTS INC75700L108CL A1,392,106$62,046,164dollars as filed
NETAPP INC COM64110D104Stock963,760$61,536,052dollars as filed
COSTAR GROUP INC COM22160N109Stock881,777$60,710,339dollars as filed
FAIR ISAAC CORP COM303250104Stock85,892$60,355,449dollars as filed
PAYLOCITY HLDG CORP COM70438V106Stock296,842$59,006,253dollars as filed
EPAM SYS INC COM29414B104Stock197,043$58,915,935dollars as filed
CONSTELLATION BRANDS INC CL A21036P108Stock259,700$58,663,685dollars as filed
MARRIOTT INTL INC NEW CL A571903202Stock352,423$58,516,315dollars as filed
ConocoPhillips20825C104COM580,193$57,560,948dollars as filed
BOOZ ALLEN HAMILTON HLDG CORP CL A099502106Stock612,005$56,726,743dollars as filed
FMC CORP COM NEW302491303Stock459,929$56,171,129dollars as filed
ROCKET PHARMACEUTICALS INC77313F106COM3,235,908$55,431,104dollars as filed
APTIV PLCG6095L109SHS492,078$55,206,248dollars as filed
WASTE CONNECTIONS INC COM94106B101Stock396,503$55,141,610dollars as filed
PPG INDS INC COM693506107Stock410,030$54,771,807dollars as filed
MARKETAXESS HLDGS INC57060D108COM139,854$54,723,472dollars as filed
PROCORE TECHNOLOGIES INC COM74275K108Stock860,705$53,905,954dollars as filed
SKYWORKS SOLUTIONS INC COM83088M102Stock454,775$53,654,355dollars as filed
TRANSUNION COM89400J107Stock849,833$52,808,623dollars as filed
APELLIS PHARMACEUTICALS INC03753U106COM792,246$52,256,546dollars as filed
WINGSTOP INC COM974155103Stock282,225$51,810,866dollars as filed
SHIFT4 PMTS INC CL A82452J109Stock681,171$51,632,762dollars as filed
CATALENT INC USD 0.01148806102COM775,520$50,959,419dollars as filed
AMERIPRISE FINL INC COM03076C106Stock166,192$50,937,848dollars as filed
Applied Materials,Inc.038222105COM413,075$50,738,002dollars as filed
JUNIPER NETWORKS INC48203R104COM1,473,640$50,722,689dollars as filed
EVEREST GROUP LTD COMG3223R108Stock139,960$50,108,479dollars as filed
WATSCO INC COM942622200Stock157,199$50,014,357dollars as filed
CHARTER COMMUNICATIONS INC N16119P108COM131,581$47,054,681dollars as filed
OPTION CARE HEALTH INC COM NEW68404L201Stock1,472,182$46,771,222dollars as filed
VAIL RESORTS INC COM91879Q109Stock197,935$46,253,383dollars as filed
QUEST DIAGNOSTICS INC COM74834L100Stock321,963$45,551,256dollars as filed
OVINTIV INC69047Q102COM1,234,773$44,550,610dollars as filed
TEXAS ROADHOUSE INC COM882681109Stock406,990$43,979,339dollars as filed
HEXCEL CORP NEW428291108COM636,959$43,472,452dollars as filed
GLOBANT S AL44385109COM263,464$43,210,731dollars as filed
ETSY INC29786A106COM387,501$43,140,505dollars as filed
S&P Global,Inc.78409V104COM122,136$42,108,829dollars as filed
AAON INC000360206COM PAR $0.004435,349$42,093,895dollars as filed
CHURCHILL DOWNS INC171484108COM162,366$41,736,180dollars as filed
LIVE NATION ENTERTAINMENT INC COM538034109Stock590,055$41,303,833dollars as filed
NATIONAL VISION HLDGS INC COM63845R107Stock2,192,016$41,297,581dollars as filed
REPLIGEN CORP COM759916109Stock242,604$40,844,809dollars as filed
SPIRIT RLTY CAP INC NEW NPV84860W300COM NEW961,276$38,297,236dollars as filed
FLYWIRE CORPORATION302492103COM VTG1,299,215$38,144,952dollars as filed
KINSALECAPGROUPINC49714P108STOK124,036$37,229,405dollars as filed
PRIMERICA INC74164M108COM214,352$36,919,988dollars as filed
CABLE ONE INC12685J105COM51,776$36,346,752dollars as filed
NORTHERN OIL & GAS INC COM665531307Stock1,196,310$36,308,009dollars as filed
SYNAPTICS INC COM87157D109Stock320,878$35,665,590dollars as filed
SENSATA TECHNOLOGIES HLDG PLg8060n102SHS705,278$35,278,006dollars as filed
AXALTA COATING SYS LTD COMG0750C108Stock1,132,776$34,311,785dollars as filed
PDC ENERGY INC69327R101COM529,512$33,984,080dollars as filed
ESSEX PPTY TR INC COM297178105REIT160,661$33,600,690dollars as filed
AVIENT CORPORATION05368V106COM811,610$33,405,868dollars as filed
CULLEN FROST BANKERS INC COM229899109Stock302,082$31,821,318dollars as filed
SAMSARA INC COM CL A79589L106Stock1,605,956$31,669,452dollars as filed
CASELLA WASTE SYS INC147448104CL A378,667$31,300,614dollars as filed
HAEMONETICS CORP MASS COM405024100Stock373,456$30,903,484dollars as filed
WNS HOLDINGS LTD92932M101SPON ADR324,826$30,264,038dollars as filed
UNIVERSAL DISPLAY CORP91347P105COM191,005$29,630,606dollars as filed
FIRST CTZNS BANCSHARES INC DEL CL A31946M103Stock29,539$28,744,401dollars as filed
PLANET FITNESS MASTER ISSUER L CL A72703H101Stock350,739$27,241,898dollars as filed
ENDEAVOR GROUP HLDGS INC29260Y109CL A COM1,133,153$27,116,351dollars as filed
Qualcomm Incorporated747525103COM212,119$27,062,142dollars as filed
ONTO INNOVATION INC COM683344105Stock302,013$26,540,902dollars as filed
AZENTA INC114340102COM588,650$26,265,563dollars as filed
BOX INC CL A10316T104Stock973,699$26,085,396dollars as filed
NEUROCRINE BIOSCIENCES INC64125C109COM254,626$25,773,244dollars as filed
AMEDISYS INC023436108COM342,876$25,218,530dollars as filed
HALLIBURTON CO COM406216101Stock796,973$25,216,213dollars as filed
NEXTIER OILFIELD SOLUTIONS INC65290C105COMMON STOCK3,046,514$24,219,786dollars as filed
DYNATRACE INC COM NEW268150109Stock555,595$23,501,669dollars as filed
MACOM TECH SOLUTIONS HLDGS INC COM55405Y100Stock301,339$21,346,855dollars as filed
WEX INC96208T104COM110,541$20,327,384dollars as filed
Oracle Corporation68389X105COM215,781$20,050,371dollars as filed
STEPSTONE GROUP INC85914M107COM CL A824,858$20,019,304dollars as filed
INNOVIVA INC45781M101COM1,759,431$19,793,599dollars as filed
VERADIGM INC01988P108COMMON STOCK1,462,688$19,088,078dollars as filed
PALOMAR HLDGS INC COM69753M105Stock317,006$17,498,731dollars as filed
CHAMPIONX CORPORATION15872M104COM602,799$16,353,937dollars as filed
Broadcom Inc.11135F101COM23,382$15,000,488dollars as filed
RANPAK HOLDINGS CORP75321W103COMMON STOCK2,781,628$14,520,098dollars as filed
AbbVie,Inc.00287Y109COM83,017$13,230,419dollars as filed
AMERICAN FINANCIAL GROUP INC COM025932104Stock106,267$12,911,441dollars as filed
Advanced Micro Devices,Inc.007903107COM120,584$11,818,438dollars as filed
IVERIC BIO INC46583P102COM476,721$11,598,622dollars as filed
89BIO INC282559103COM755,210$11,501,848dollars as filed
International Business Machines Corporation459200101COM79,539$10,426,768dollars as filed
PepsiCo,Inc.713448108COM48,158$8,779,203dollars as filed
Alphabet Inc. Reg. Shares C02079K107COM84,158$8,752,432dollars as filed
METTLER TOLEDO INTERNATIONAL COM592688105Stock5,623$8,604,371dollars as filed
Merck & Co.,Inc.58933Y105COM76,509$8,139,793dollars as filed
Coca-Cola Company191216100COM129,140$8,010,554dollars as filed
Danaher Corporation235851102COM31,107$7,840,208dollars as filed
TARGET CORP COM87612E106Stock45,103$7,470,410dollars as filed
TRANE TECHNOLOGIES PLC SHSG8994E103Stock40,140$7,384,957dollars as filed
Gilead Sciences,Inc.375558103COM86,760$7,198,477dollars as filed
HERSHEY CO COM427866108Stock23,368$5,945,053dollars as filed
CUMMINS INC COM231021106Stock24,506$5,853,993dollars as filed
United Parcel Service,Inc. Class B911312106COM28,887$5,603,789dollars as filed
BLACKROCK INC CL A COM09247X101COM8,163$5,462,027dollars as filed
Bank of America Corp060505104COM186,735$5,340,621dollars as filed
EQUITY LIFESTYLE PROPERTIES COM29472R108REIT78,775$5,288,166dollars as filed
NEXSTAR MEDIA GROUP INC COMMON STOCK65336K103Stock29,439$5,082,938dollars as filed
COGENT COMMUNICATIONS GROUP19239V302COM NEW76,475$4,872,987dollars as filed
GARTNERINC366651107STOK14,370$4,681,315dollars as filed
McDonalds Corporation580135101COM16,106$4,503,399dollars as filed
CINTAS CORP COM172908105Stock9,719$4,496,787dollars as filed
AMERICAN INTL GROUP INC COM NEW026874784Stock80,266$4,042,196dollars as filed
ADVANCED DRAIN SYS INC DEL COM00790R104Stock46,440$3,910,712dollars as filed
TIMKEN CO887389104COM47,820$3,907,850dollars as filed
ILLINOIS TOOL WKS INC452308109COM15,982$3,890,818dollars as filed
RAYMOND JAMES FINL INC COM754730109Stock40,095$3,739,661dollars as filed
Chevron Corporation166764100COM22,077$3,602,083dollars as filed
BHP BILLITON LIMITED SPONSORED ADS088606108ADR53,221$3,374,744dollars as filed
Analog Devices,Inc.032654105COM15,663$3,089,057dollars as filed
BRIGHT HORIZONS FAM SOL IN DEL COM109194100Stock37,450$2,883,276dollars as filed
HEICO CORP NEW422806208CL A20,130$2,735,667dollars as filed
SILICON MOTION TECHNOLOGY CORP SPONSORED ADR82706C108ADR23,670$1,550,858dollars as filed
CSX Corporation126408103COM28,590$855,985dollars as filed
NEXTPOWER INC CLASS A COM65290E101Stock22,879$829,593dollars as filed
KARUNA THERAPEUTICS INC48576A100COM4,420$802,849dollars as filed
WILLIAMS COS INC COM969457100Stock23,330$696,634dollars as filed
BLACK KNIGHT INC COM09215C105Stock11,550$664,818dollars as filed
AXONENTERPRISEINC05464C101STOK2,880$647,568dollars as filed
Intuit Inc.461202103COM1,410$628,620dollars as filed
EMCOR GROUP INC COM29084Q100Stock3,540$575,569dollars as filed
TERRENO RLTY CORP88146M101COM8,840$571,064dollars as filed
NANO DIMENSION LTD63008G203SPONSORD ADS NEW149,070$430,812dollars as filed
OLD DOMINION FREIGHT LINE INC COM679580100Stock1,249$425,709dollars as filed
EZCORP INC302301106CL A NON VTG43,780$376,508dollars as filed
NATIONAL STORAGE AFFILIATES TR COM SHS BEN IN637870106REIT7,860$328,391dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001085146-23-002316this filing2023-05-12acceptance time not in the bulk data set