MondegarAI
WESTFIELD CAPITAL MANAGEMENT CO LP

Q1 2025 · 13F-HR

WESTFIELD CAPITAL MANAGEMENT CO LPholdings as filed

Filed 2025-05-09 · accession 0001085146-25-002864

$20.55B
Reported value
244
Positions
2025-03-31
Period end
View analyzed profile →PRO

Holdings as filed

CUSIPTickerIssuerValue% port.SharesClassVoting
04351P101ASNDUSDASCENDIS PHARMA A/S$854.0M4.16%5,479,259CommonSOLE
67066G104NVDANVIDIA CORPORATION$795.1M3.87%7,336,654CommonSOLE
037833100AAPLAPPLE INC$755.5M3.68%3,401,183CommonSOLE
594918104MSFTMICROSOFT CORP$687.9M3.35%1,832,611CommonSOLE
023135106AMZNAMAZON COM INC$658.8M3.21%3,462,676CommonSOLE
02079K305GOOGLALPHABET INC$535.0M2.60%3,459,916CommonSOLE
30303M102METAMETA PLATFORMS INC$517.9M2.52%898,538CommonSOLE
05464C101AXONAXON ENTERPRISE INC$488.0M2.37%927,801CommonSOLE
893641100TDGTRANSDIGM GROUP INC$437.3M2.13%316,162CommonSOLE
92826C839VVISA INC$317.0M1.54%904,397CommonSOLE
199908104FIXCOMFORT SYS USA INC$286.8M1.40%889,639CommonSOLE
50212V100LPLALPL FINL HLDGS INC$271.6M1.32%830,099CommonSOLE
81762P102NOWSERVICENOW INC$255.0M1.24%320,284CommonSOLE
876030107TPRTAPESTRY INC$253.6M1.23%3,601,314CommonSOLE
52490G102LEGNLEGEND BIOTECH CORP$234.7M1.14%6,917,567CommonSOLE
11135F101AVGOBROADCOM INC$234.1M1.14%1,398,303CommonSOLE
532457108LLYELI LILLY & CO$213.9M1.04%258,952CommonSOLE
G3730V105FTAIFTAI AVIATION LTD$210.1M1.02%1,892,451CommonSOLE
79466L302CRMSALESFORCE INC$210.1M1.02%782,929CommonSOLE
743315103PGRPROGRESSIVE CORP$201.6M0.98%712,249CommonSOLE
64110L106NFLXNETFLIX INC$199.5M0.97%213,903CommonSOLE
M22465104CHKPCHECK POINT SOFTWARE TECH LT$197.1M0.96%864,717CommonSOLE
92537N108VRTVERTIV HOLDINGS CO$171.7M0.84%2,377,572CommonSOLE
147448104CWSTCASELLA WASTE SYS INC$168.1M0.82%1,507,843CommonSOLE
252131107DXCMDEXCOM INC$167.2M0.81%2,447,743CommonSOLE
03990B101ARESARES MANAGEMENT CORPORATION$165.4M0.81%1,128,415CommonSOLE
M7S64H106MNDYMONDAY COM LTD$161.7M0.79%665,164CommonSOLE
69608A108PLTRPALANTIR TECHNOLOGIES INC$160.2M0.78%1,898,437CommonSOLE
36828A101GEVGE VERNOVA INC$156.5M0.76%512,767CommonSOLE
049468101TEAMATLASSIAN CORPORATION$156.3M0.76%736,388CommonSOLE
516544103LNTHLANTHEUS HLDGS INC$155.1M0.75%1,589,145CommonSOLE
109641100EATBRINKER INTL INC$148.4M0.72%995,713CommonSOLE
443201108HWMHOWMET AEROSPACE INC$147.3M0.72%1,135,059CommonSOLE
68404L201OPCHOPTION CARE HEALTH INC$144.9M0.70%4,144,537CommonSOLE
45784P101PODDINSULET CORP$141.3M0.69%538,247CommonSOLE
26142V105DKNGDRAFTKINGS INC NEW$140.3M0.68%4,225,024CommonSOLE
22160K105COSTCOSTCO WHSL CORP NEW$140.1M0.68%148,156CommonSOLE
060505104BACBANK AMERICA CORP$139.6M0.68%3,344,496CommonSOLE
268150109DTDYNATRACE INC$137.2M0.67%2,910,553CommonSOLE
79589L106IOTSAMSARA INC$135.1M0.66%3,523,390CommonSOLE
78709Y105SAIASAIA INC$130.5M0.64%373,503CommonSOLE
60937P106MDBMONGODB INC$128.7M0.63%733,787CommonSOLE
253393102DKSDICKS SPORTING GOODS INC$127.1M0.62%630,566CommonSOLE
74275K108PCORPROCORE TECHNOLOGIES INC$124.1M0.60%1,879,226CommonSOLE
91324P102UNHUNITEDHEALTH GROUP INC$123.7M0.60%236,174CommonSOLE
88160R101TSLATESLA INC$123.0M0.60%474,720CommonSOLE
882681109TXRHTEXAS ROADHOUSE INC$117.0M0.57%702,048CommonSOLE
758750103RRXREGAL REXNORD CORPORATION$114.0M0.55%1,001,177CommonSOLE
460146103IPINTERNATIONAL PAPER CO$113.0M0.55%2,117,805CommonSOLE
363576109AJGGALLAGHER ARTHUR J & CO$112.1M0.55%324,635CommonSOLE
574795100MASIMASIMO CORP$111.9M0.54%671,479CommonSOLE
09581B103OWLBLUE OWL CAPITAL INC$111.3M0.54%5,553,781CommonSOLE
874039100TSMTAIWAN SEMICONDUCTOR MFG LTD$108.8M0.53%655,367CommonSOLE
457669307INSMINSMED INC$107.3M0.52%1,406,609CommonSOLE
377322102GKOSGLAUKOS CORP$106.7M0.52%1,084,184CommonSOLE
G8068L108SNSHARKNINJA INC$102.6M0.50%1,229,784CommonSOLE
907818108UNPUNION PAC CORP$100.8M0.49%426,665CommonSOLE
55354G100MSCIMSCI INC$99.3M0.48%175,636CommonSOLE
632307104NTRANATERA INC$97.8M0.48%691,341CommonSOLE
68389X105ORCLORACLE CORP$97.7M0.48%698,726CommonSOLE
82452J109FOURSHIFT4 PMTS INC$96.9M0.47%1,186,149CommonSOLE
L44385109GLOBGLOBANT S A$96.6M0.47%820,445CommonSOLE
443573100HUBSHUBSPOT INC$95.2M0.46%166,657CommonSOLE
Y2573F102FLEXFLEX LTD$95.0M0.46%2,873,012CommonSOLE
892672106TWTRADEWEB MKTS INC$93.5M0.46%630,032CommonSOLE
50155Q100KDKYNDRYL HLDGS INC$91.4M0.44%2,911,964CommonSOLE
303250104FICOFAIR ISAAC CORP$90.0M0.44%48,827CommonSOLE
834203309SLNOSOLENO THERAPEUTICS INC$86.5M0.42%1,211,245CommonSOLE
69753M105PLMRPALOMAR HLDGS INC$84.8M0.41%618,598CommonSOLE
45073V108ITTITT INC$82.1M0.40%635,419CommonSOLE
92243G108PCVXVAXCYTE INC$81.4M0.40%2,155,137CommonSOLE
45167R104IEXIDEX CORP$80.6M0.39%445,203CommonSOLE
03073E105CORCENCORA INC$80.4M0.39%288,969CommonSOLE
90138F102TWLOTWILIO INC$80.2M0.39%818,964CommonSOLE
488401100KMPRKEMPER CORP$79.7M0.39%1,192,664CommonSOLE
78351F107RYANRYAN SPECIALTY HOLDINGS INC$79.6M0.39%1,078,233CommonSOLE
03831W108APPAPPLOVIN CORP$78.7M0.38%297,188CommonSOLE
77543R102ROKUROKU INC$78.7M0.38%1,117,739CommonSOLE
74164M108PRIPRIMERICA INC$78.6M0.38%276,225CommonSOLE
971378104WSCWILLSCOT HLDGS CORP$77.9M0.38%2,803,085CommonSOLE
78409V104SPGIS&P GLOBAL INC$76.9M0.37%151,399CommonSOLE
109194100BFAMBRIGHT HORIZONS FAM SOL IN D$75.6M0.37%595,338CommonSOLE
27579R104EWBCEAST WEST BANCORP INC$73.4M0.36%817,306CommonSOLE
55405Y100MTSIMACOM TECH SOLUTIONS HLDGS I$72.5M0.35%721,904CommonSOLE
M2029K104BIRKBIRKENSTOCK HOLDING PLC$72.1M0.35%1,572,685CommonSOLE
85208M102SFMSPROUTS FMRS MKT INC$71.7M0.35%469,725CommonSOLE
76243J105RYTMRHYTHM PHARMACEUTICALS INC$71.0M0.35%1,341,092CommonSOLE
71424F105PRPERMIAN RESOURCES CORP$70.4M0.34%5,085,292CommonSOLE
053611109AVYAVERY DENNISON CORP$70.1M0.34%394,064CommonSOLE
031100100AMEAMETEK INC$70.0M0.34%406,878CommonSOLE
74624M102PPURE STORAGE INC$69.0M0.34%1,557,874CommonSOLE
89400J107TRUTRANSUNION$68.9M0.34%830,028CommonSOLE
445658107JBHTHUNT J B TRANS SVCS INC$67.7M0.33%457,555CommonSOLE
03769M106APOAPOLLO GLOBAL MGMT INC$67.6M0.33%493,602CommonSOLE
94106B101WCNWASTE CONNECTIONS INC$66.8M0.32%342,037CommonSOLE
G6683N103NUNU HLDGS LTD$66.6M0.32%6,501,928CommonSOLE
249906108DSGXDESCARTES SYS GROUP INC$65.8M0.32%652,431CommonSOLE
056525108BMIBADGER METER INC$65.4M0.32%344,010CommonSOLE
G3323L100FNFABRINET$64.6M0.31%327,137CommonSOLE
450056106IRTCIRHYTHM TECHNOLOGIES INC$64.6M0.31%617,078CommonSOLE
23804L103DDOGDATADOG INC$63.5M0.31%640,549CommonSOLE
G4705A100ICLRICON PLC$63.3M0.31%361,912CommonSOLE
N5749R1002GHMERUS N V$63.2M0.31%1,501,220CommonSOLE
679295105OKTAOKTA INC$60.9M0.30%578,946CommonSOLE
81730H109SSENTINELONE INC$59.7M0.29%3,286,406CommonSOLE
M98068105WIXWIX COM LTD$59.5M0.29%364,332CommonSOLE
929160109VMCVULCAN MATLS CO$59.4M0.29%254,781CommonSOLE
75700L108RRRRED ROCK RESORTS INC$59.0M0.29%1,360,609CommonSOLE
770700102HOODROBINHOOD MKTS INC$58.9M0.29%1,415,103CommonSOLE
43300A203HLTHILTON WORLDWIDE HLDGS INC$57.2M0.28%251,474CommonSOLE
773903109ROKROCKWELL AUTOMATION INC$56.8M0.28%219,860CommonSOLE
G0750C108AXTAAXALTA COATING SYS LTD$56.8M0.28%1,712,448CommonSOLE
750917106RMBSRAMBUS INC DEL$56.4M0.27%1,089,081CommonSOLE
217204106CPRTCOPART INC$56.1M0.27%991,920CommonSOLE
61559X104MLTXMOONLAKE IMMUNOTHERAPEUTICS$56.1M0.27%1,434,770CommonSOLE
25278X109FANGDIAMONDBACK ENERGY INC$55.1M0.27%344,596CommonSOLE
05368V106AVNTAVIENT CORPORATION$54.8M0.27%1,475,318CommonSOLE
10576N102BRZEBRAZE INC$54.6M0.27%1,514,513CommonSOLE
624758108MWAMUELLER WTR PRODS INC$53.9M0.26%2,118,561CommonSOLE
512807306LRCXLAM RESEARCH CORP$53.5M0.26%736,520CommonSOLE
23282W605CYTKCYTOKINETICS INC$52.7M0.26%1,310,336CommonSOLE
65290E101NXTNEXTRACKER INC$52.4M0.25%1,243,151CommonSOLE
36266G107GEHCGE HEALTHCARE TECHNOLOGIES I$52.0M0.25%644,607CommonSOLE
02043Q107ALNYALNYLAM PHARMACEUTICALS INC$51.9M0.25%192,172CommonSOLE
G98196101W9N0WNS HLDGS LTD$51.7M0.25%840,983CommonSOLE
126408103CSXCSX CORP$51.6M0.25%1,753,021CommonSOLE
42226A107HQYHEALTHEQUITY INC$49.8M0.24%563,389CommonSOLE
19260Q107COINCOINBASE GLOBAL INC$49.7M0.24%288,763CommonSOLE
665531307NOGNORTHERN OIL & GAS INC$49.5M0.24%1,636,938CommonSOLE
565394103CARTMAPLEBEAR INC$48.6M0.24%1,219,320CommonSOLE
05589G102BWINTHE BALDWIN INSURANCE GRP IN$48.1M0.23%1,076,847CommonSOLE
493267108KEYKEYCORP$47.5M0.23%2,968,535CommonSOLE
880770102TERTERADYNE INC$47.5M0.23%574,467CommonSOLE
579780206MKCMCCORMICK & CO INC$47.1M0.23%571,698CommonSOLE
G87110105FTITECHNIPFMC PLC$47.0M0.23%1,483,510CommonSOLE
03820C105AITAPPLIED INDL TECHNOLOGIES IN$46.9M0.23%208,136CommonSOLE
97650W108WTFCWINTRUST FINL CORP$46.7M0.23%415,498CommonSOLE
98420N105XENEXENON PHARMACEUTICALS INC$46.7M0.23%1,391,370CommonSOLE
773122106ROCKET LAB USA INC$46.2M0.23%2,586,532CommonSOLE
441593100HLIHOULIHAN LOKEY INC$46.2M0.22%286,288CommonSOLE
87422Q109TLNTALEN ENERGY CORP$45.9M0.22%229,674CommonSOLE
816850101SMTCSEMTECH CORP$45.5M0.22%1,322,351CommonSOLE
533900106LECOLINCOLN ELEC HLDGS INC$44.7M0.22%236,086CommonSOLE
74276L105PRCTPROCEPT BIOROBOTICS CORP$43.6M0.21%748,557CommonSOLE
538034109LYVLIVE NATION ENTERTAINMENT IN$42.1M0.20%322,451CommonSOLE
343412102FLRFLUOR CORP NEW$40.9M0.20%1,142,294CommonSOLE
L8681T102SPOTSPOTIFY TECHNOLOGY S A$40.8M0.20%74,210CommonSOLE
09073M104TECHBIO-TECHNE CORP$39.7M0.19%676,408CommonSOLE
15872M104APY1EURCHAMPIONX CORPORATION$39.1M0.19%1,310,725CommonSOLE
92840M102VSTVISTRA CORP$39.0M0.19%332,342CommonSOLE
88339J105TTDTHE TRADE DESK INC$39.0M0.19%712,098CommonSOLE
171484108CHDNCHURCHILL DOWNS INC$38.5M0.19%346,452CommonSOLE
615394202MOG/AMOOG INC$37.7M0.18%217,368CommonSOLE
76155X100RVMDREVOLUTION MEDICINES INC$37.6M0.18%1,064,046CommonSOLE
826919102SLABSILICON LABORATORIES INC$37.2M0.18%330,897CommonSOLE
22788C105CRWDCROWDSTRIKE HLDGS INC$37.1M0.18%105,130CommonSOLE
002896207ANFABERCROMBIE & FITCH CO$36.6M0.18%479,651CommonSOLE
958102105WDCWESTERN DIGITAL CORP$35.4M0.17%875,743CommonSOLE
15677J108DAYDAYFORCE INC$34.3M0.17%587,439CommonSOLE
090572207BIOBIO RAD LABS INC$32.8M0.16%134,671CommonSOLE
77313F106RCKTROCKET PHARMACEUTICALS INC$32.2M0.16%4,820,701CommonSOLE
282559103ETNBGBP89BIO INC$28.3M0.14%3,894,741CommonSOLE
04626A103ALABASTERA LABS INC$27.9M0.14%467,080CommonSOLE
346375108FORMFORMFACTOR INC$25.8M0.13%913,330CommonSOLE
19247G107COHRCOHERENT CORP$25.7M0.12%395,504CommonSOLE
49714P108KNSLKINSALE CAP GROUP INC$25.1M0.12%51,624CommonSOLE
683344105ONTOONTO INNOVATION INC$24.7M0.12%203,566CommonSOLE
G25457105CRDOCREDO TECHNOLOGY GROUP HOLDI$24.3M0.12%605,805CommonSOLE
088786108BCYCBICYCLE THERAPEUTICS PLC$22.6M0.11%2,657,305CommonSOLE
G3934V109GENIGENIUS SPORTS LIMITED$21.8M0.11%2,178,257CommonSOLE
922417100VECOVEECO INSTRS INC DEL$21.3M0.10%1,059,504CommonSOLE
74164F103PRIMPRIMORIS SVCS CORP$20.8M0.10%362,729CommonSOLE
81663L200WGSGENEDX HOLDINGS CORP$19.7M0.10%222,477CommonSOLE
30226D106EXTREXTREME NETWORKS$18.1M0.09%1,371,749CommonSOLE
78473E103SPXCSPX TECHNOLOGIES INC$16.6M0.08%128,615CommonSOLE
040413205ANETARISTA NETWORKS INC$15.2M0.07%196,534CommonSOLE
565788106MARAMARA HOLDINGS INC$14.8M0.07%1,287,869CommonSOLE
624756102MLIMUELLER INDS INC$12.8M0.06%168,424CommonSOLE
191216100KOCOCA COLA CO$12.8M0.06%178,810CommonSOLE
916896103UECURANIUM ENERGY CORP$12.5M0.06%2,606,954CommonSOLE
15101Q207CLSCELESTICA INC$12.2M0.06%154,406CommonSOLE
172908105CTASCINTAS CORP$11.7M0.06%56,903CommonSOLE
767292105RIOTRIOT PLATFORMS INC$11.6M0.06%1,635,177CommonSOLE
969457100WMBWILLIAMS COS INC$10.6M0.05%177,064CommonSOLE
02079K107GOOGALPHABET INC$9.7M0.05%62,285CommonSOLE
03076C106AMPAMERIPRISE FINL INC$9.4M0.05%19,397CommonSOLE
85254J102STAGSTAG INDL INC$9.1M0.04%250,875CommonSOLE
742718109PGPROCTER AND GAMBLE CO$9.1M0.04%53,118CommonSOLE
968223206WLYWILEY JOHN & SONS INC$8.3M0.04%186,014CommonSOLE
717081103PFEPFIZER INC$8.0M0.04%315,697CommonSOLE
872540109TJXTJX COS INC NEW$7.9M0.04%64,939CommonSOLE
01749D105ALGMALLEGRO MICROSYSTEMS INC$7.6M0.04%303,672CommonSOLE
888787108TOSTTOAST INC$7.6M0.04%229,968CommonSOLE
892356106TSCOTRACTOR SUPPLY CO$7.5M0.04%136,377CommonSOLE
G5960L103MDTMEDTRONIC PLC$7.2M0.04%80,415CommonSOLE
883556102TMOTHERMO FISHER SCIENTIFIC INC$7.1M0.03%14,335CommonSOLE
55261F104MTBM & T BK CORP$7.1M0.03%39,657CommonSOLE
65339F101NEENEXTERA ENERGY INC$7.0M0.03%98,747CommonSOLE
231021106CMICUMMINS INC$6.8M0.03%21,762CommonSOLE
29444U700EQIXEQUINIX INC$6.2M0.03%7,607CommonSOLE
931142103WMTWALMART INC$6.1M0.03%69,966CommonSOLE
366651107ITGARTNER INC$6.0M0.03%14,370CommonSOLE
31620M106FISFIDELITY NATL INFORMATION SV$6.0M0.03%79,940CommonSOLE
22160N109CSGPCOSTAR GROUP INC$5.9M0.03%75,081CommonSOLE
31946M103FCNCAFIRST CTZNS BANCSHARES INC N$5.9M0.03%3,186CommonSOLE
G1151C101ACNACCENTURE PLC IRELAND$5.8M0.03%18,581CommonSOLE
969904101WSMWILLIAMS SONOMA INC$5.6M0.03%35,723CommonSOLE
G3922B107GGENPACT LIMITED$5.6M0.03%111,368CommonSOLE
754730109RJFRAYMOND JAMES FINL INC$5.6M0.03%40,095CommonSOLE
80105N105SNYSANOFI$5.4M0.03%97,814CommonSOLE
103304101BYDBOYD GAMING CORP$5.3M0.03%80,958CommonSOLE
770323103RHIROBERT HALF INC.$5.0M0.02%92,084CommonSOLE
775711104ROLROLLINS INC$5.0M0.02%92,834CommonSOLE
571903202MARMARRIOTT INTL INC NEW$4.7M0.02%19,777CommonSOLE
37940X102GPNGLOBAL PMTS INC$4.3M0.02%43,566CommonSOLE
422806208HEI/AHEICO CORP NEW$4.2M0.02%20,130CommonSOLE
315616102FFIVF5 INC$3.9M0.02%14,770CommonSOLE
70438V106PCTYPAYLOCITY HLDG CORP$3.5M0.02%18,840CommonSOLE
235851102DHRDANAHER CORPORATION$3.2M0.02%15,810CommonSOLE
026874784AIGAMERICAN INTL GROUP INC$3.2M0.02%36,560CommonSOLE
437076102HDHOME DEPOT INC$2.6M0.01%6,978CommonSOLE
452308109ITWILLINOIS TOOL WKS INC$2.4M0.01%9,808CommonSOLE
75321W103PACKRANPAK HOLDINGS CORP$2.2M0.01%407,328CommonSOLE
171779309CIENCIENA CORP$1.9M0.01%31,750CommonSOLE
46120E602ISRGINTUITIVE SURGICAL INC$1.2M0.01%2,339CommonSOLE
N6596X109NXPINXP SEMICONDUCTORS N V$1.1M0.01%5,948CommonSOLE
09857L108BKNGBOOKING HOLDINGS INC$967,4510.00%210CommonSOLE
461202103INTUINTUIT$865,7260.00%1,410CommonSOLE
459200101IBMINTERNATIONAL BUSINESS MACHS$825,5510.00%3,320CommonSOLE
038222105AMATAPPLIED MATLS INC$748,6740.00%5,159CommonSOLE
729132100PLXSPLEXUS CORP$666,2760.00%5,200CommonSOLE
58733R102MELIMERCADOLIBRE INC$610,6220.00%313CommonSOLE
14149Y108CAHCARDINAL HEALTH INC$595,8550.00%4,325CommonNONE
26884L109EQTEQT CORP$568,4950.00%10,640CommonSOLE
G8994E103TTTRANE TECHNOLOGIES PLC$562,9930.00%1,671CommonSOLE
46428Q109SLVISHARES SILVER TR$519,3920.00%16,760CommonSOLE
101137107BSXBOSTON SCIENTIFIC CORP$506,9220.00%5,025CommonSOLE
200340107CMACOMERICA INC$505,5540.00%8,560CommonSOLE
464287481IWPISHARES TR$459,8690.00%3,914CommonSOLE
464287614IWFISHARES TR$430,4250.00%1,192CommonSOLE
337738108FISVFISERV INC$364,3700.00%1,650CommonSOLE
52635N103LENZLENZ THERAPEUTICS INC$261,1880.00%10,159CommonSOLE
69366J200PTCTPTC THERAPEUTICS INC$258,6730.00%5,076CommonNONE
53229C107LSPDLIGHTSPEED COMMERCE INC$189,5690.00%21,665CommonSOLE

Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.