MondegarAI
WESTFIELD CAPITAL MANAGEMENT CO LP

Q2 2025 · 13F-HR

WESTFIELD CAPITAL MANAGEMENT CO LPholdings as filed

Filed 2025-08-12 · accession 0001085146-25-004820

$23.84B
Reported value
239
Positions
2025-06-30
Period end
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The Brief · WESTFIELD CAPITAL MANAGEMENT CO LP · Q2 2025

AI · grounded in 13F

WESTFIELD CAPITAL MANAGEMENT CO LP established a new position in NVDA valued at $1.19B. The fund also initiated new stakes in ASNDUSD for $940.9M and MSFT for $874.2M. Additional new positions include AAPL at $716.9M and AMZN at $680.2M. Total assets under management stand at $23.8B across 239 positions.

Holdings as filed

CUSIPTickerIssuerValue% port.SharesClassVoting
67066G104NVDANVIDIA CORPORATION$1.19B5.00%7,545,345CommonSOLE
04351P101ASNDUSDASCENDIS PHARMA A/S$940.9M3.95%5,451,401CommonSOLE
594918104MSFTMICROSOFT CORP$874.2M3.67%1,757,424CommonSOLE
037833100AAPLAPPLE INC$716.9M3.01%3,494,184CommonSOLE
023135106AMZNAMAZON COM INC$680.2M2.85%3,100,452CommonSOLE
05464C101AXONAXON ENTERPRISE INC$654.1M2.74%790,079CommonSOLE
30303M102METAMETA PLATFORMS INC$633.6M2.66%858,402CommonSOLE
199908104FIXCOMFORT SYS USA INC$502.1M2.11%936,412CommonSOLE
02079K305GOOGLALPHABET INC$453.2M1.90%2,571,637CommonSOLE
893641100TDGTRANSDIGM GROUP INC$441.0M1.85%290,013CommonSOLE
11135F101AVGOBROADCOM INC$368.3M1.54%1,336,142CommonSOLE
443201108HWMHOWMET AEROSPACE INC$356.6M1.50%1,915,955CommonSOLE
92537N108VRTVERTIV HOLDINGS CO$338.7M1.42%2,637,409CommonSOLE
64110L106NFLXNETFLIX INC$337.4M1.41%251,923CommonSOLE
81762P102NOWSERVICENOW INC$306.7M1.29%298,276CommonSOLE
876030107TPRTAPESTRY INC$300.2M1.26%3,419,245CommonSOLE
50212V100LPLALPL FINL HLDGS INC$293.3M1.23%782,232CommonSOLE
92826C839VVISA INC$282.8M1.19%796,463CommonSOLE
532457108LLYELI LILLY & CO$239.7M1.01%307,493CommonSOLE
52490G102LEGNLEGEND BIOTECH CORP$229.7M0.96%6,472,547CommonSOLE
109641100EATBRINKER INTL INC$223.0M0.94%1,236,583CommonSOLE
G3730V105FTAIFTAI AVIATION LTD$220.3M0.92%1,915,411CommonSOLE
252131107DXCMDEXCOM INC$207.8M0.87%2,380,238CommonSOLE
M7S64H106MNDYMONDAY COM LTD$203.3M0.85%646,320CommonSOLE
060505104BACBANK AMERICA CORP$199.6M0.84%4,217,760CommonSOLE
574795100MASIMASIMO CORP$198.7M0.83%1,181,203CommonSOLE
G3323L100FNFABRINET$195.5M0.82%663,310CommonSOLE
03990B101ARESARES MANAGEMENT CORPORATION$186.8M0.78%1,078,769CommonSOLE
147448104CWSTCASELLA WASTE SYS INC$179.1M0.75%1,552,307CommonSOLE
79466L302CRMSALESFORCE INC$176.6M0.74%647,474CommonSOLE
36828A101GEVGE VERNOVA INC$172.1M0.72%325,288CommonSOLE
268150109DTDYNATRACE INC$163.0M0.68%2,951,726CommonSOLE
M22465104CHKPCHECK POINT SOFTWARE TECH LT$150.2M0.63%678,958CommonSOLE
056525108BMIBADGER METER INC$150.1M0.63%612,809CommonSOLE
68389X105ORCLORACLE CORP$148.4M0.62%678,940CommonSOLE
22160K105COSTCOSTCO WHSL CORP NEW$143.2M0.60%144,626CommonSOLE
053332102AZOAUTOZONE INC$141.7M0.59%38,182CommonSOLE
79589L106IOTSAMSARA INC$141.2M0.59%3,549,106CommonSOLE
88160R101TSLATESLA INC$139.3M0.58%438,413CommonSOLE
G8068L108SNSHARKNINJA INC$139.1M0.58%1,404,751CommonSOLE
457669307INSMINSMED INC$134.8M0.57%1,339,288CommonSOLE
42226A107HQYHEALTHEQUITY INC$132.5M0.56%1,265,208CommonSOLE
882681109TXRHTEXAS ROADHOUSE INC$132.2M0.55%705,622CommonSOLE
874039100TSMTAIWAN SEMICONDUCTOR MFG LTD$131.4M0.55%580,313CommonSOLE
038222105AMATAPPLIED MATLS INC$127.1M0.53%694,431CommonSOLE
758750103RRXREGAL REXNORD CORPORATION$126.1M0.53%870,131CommonSOLE
816850101SMTCSEMTECH CORP$124.0M0.52%2,747,260CommonSOLE
516544103LNTHLANTHEUS HLDGS INC$122.4M0.51%1,495,072CommonSOLE
377322102GKOSGLAUKOS CORP$120.6M0.51%1,167,853CommonSOLE
743315103PGRPROGRESSIVE CORP$120.2M0.50%450,331CommonSOLE
771049103RBLXROBLOX CORP$120.0M0.50%1,141,073CommonSOLE
834203309SLNOSOLENO THERAPEUTICS INC$119.8M0.50%1,429,756CommonSOLE
26142V105DKNGDRAFTKINGS INC NEW$113.4M0.48%2,643,325CommonSOLE
632307104NTRANATERA INC$113.2M0.47%669,889CommonSOLE
V7780T103RCLROYAL CARIBBEAN GROUP$110.4M0.46%352,525CommonSOLE
460146103IPINTERNATIONAL PAPER CO$108.8M0.46%2,323,693CommonSOLE
03769M106APOAPOLLO GLOBAL MGMT INC$108.1M0.45%761,721CommonSOLE
N5749R1002GHMERUS N V$107.4M0.45%2,042,388CommonSOLE
775711104ROLROLLINS INC$106.0M0.44%1,878,134CommonSOLE
45073V108ITTITT INC$103.1M0.43%657,250CommonSOLE
76243J105RYTMRHYTHM PHARMACEUTICALS INC$103.0M0.43%1,629,468CommonSOLE
74275K108PCORPROCORE TECHNOLOGIES INC$103.0M0.43%1,504,787CommonSOLE
363576109AJGGALLAGHER ARTHUR J & CO$103.0M0.43%321,606CommonSOLE
538034109LYVLIVE NATION ENTERTAINMENT IN$102.5M0.43%677,730CommonSOLE
55405Y100MTSIMACOM TECH SOLUTIONS HLDGS I$101.7M0.43%709,433CommonSOLE
92840M102VSTVISTRA CORP$100.6M0.42%519,286CommonSOLE
90138F102TWLOTWILIO INC$100.3M0.42%806,789CommonSOLE
L44385109GLOBGLOBANT S A$100.0M0.42%1,100,526CommonSOLE
92243G108PCVXVAXCYTE INC$99.8M0.42%3,068,898CommonSOLE
50155Q100KDKYNDRYL HLDGS INC$99.7M0.42%2,375,354CommonSOLE
68404L201OPCHOPTION CARE HEALTH INC$99.4M0.42%3,061,474CommonSOLE
09581B103OWLBLUE OWL CAPITAL INC$99.0M0.42%5,152,460CommonSOLE
77543R102ROKUROKU INC$96.5M0.40%1,097,707CommonSOLE
422806208HEI/AHEICO CORP NEW$93.4M0.39%361,062CommonSOLE
907818108UNPUNION PAC CORP$92.1M0.39%400,295CommonSOLE
74276L105PRCTPROCEPT BIOROBOTICS CORP$92.1M0.39%1,598,349CommonSOLE
25809K105DASHDOORDASH INC$90.8M0.38%368,152CommonSOLE
18915M107NETCLOUDFLARE INC$87.9M0.37%448,696CommonSOLE
78351F107RYANRYAN SPECIALTY HOLDINGS INC$87.0M0.36%1,279,815CommonSOLE
366651107ITGARTNER INC$86.1M0.36%212,927CommonSOLE
773121108RKLBROCKET LAB CORP$84.6M0.35%2,365,048CommonSOLE
488401100KMPRKEMPER CORP$84.6M0.35%1,310,206CommonSOLE
833445109SNOWSNOWFLAKE INC$83.6M0.35%373,623CommonSOLE
55354G100MSCIMSCI INC$83.3M0.35%144,360CommonSOLE
M2029K104BIRKBIRKENSTOCK HOLDING PLC$82.5M0.35%1,676,950CommonSOLE
493267108KEYKEYCORP$81.5M0.34%4,678,788CommonSOLE
89400J107TRUTRANSUNION$81.2M0.34%922,286CommonSOLE
45866F104ICEINTERCONTINENTAL EXCHANGE IN$80.9M0.34%440,726CommonSOLE
03073E105CORCENCORA INC$80.6M0.34%268,752CommonSOLE
85208M102SFMSPROUTS FMRS MKT INC$78.8M0.33%478,370CommonSOLE
971378104WSCWILLSCOT HLDGS CORP$78.4M0.33%2,861,031CommonSOLE
303250104FICOFAIR ISAAC CORP$77.3M0.32%42,304CommonSOLE
45167R104IEXIDEX CORP$77.0M0.32%438,664CommonSOLE
91324P102UNHUNITEDHEALTH GROUP INC$71.8M0.30%230,033CommonSOLE
65290E101NXTNEXTRACKER INC$71.6M0.30%1,317,564CommonSOLE
031100100AMEAMETEK INC$71.6M0.30%395,416CommonSOLE
773903109ROKROCKWELL AUTOMATION INC$71.3M0.30%214,680CommonSOLE
72352L106PINSPINTEREST INC$71.2M0.30%1,986,093CommonSOLE
888787108TOSTTOAST INC$71.0M0.30%1,602,654CommonSOLE
443573100HUBSHUBSPOT INC$69.8M0.29%125,407CommonSOLE
75700L108RRRRED ROCK RESORTS INC$69.7M0.29%1,339,886CommonSOLE
19247G107COHRCOHERENT CORP$69.1M0.29%774,235CommonSOLE
74164M108PRIPRIMERICA INC$68.5M0.29%250,151CommonSOLE
60937P106MDBMONGODB INC$68.3M0.29%325,233CommonSOLE
L8681T102SPOTSPOTIFY TECHNOLOGY S A$68.2M0.29%88,931CommonSOLE
565394103CARTMAPLEBEAR INC$67.1M0.28%1,482,228CommonSOLE
82452J109FOURSHIFT4 PMTS INC$67.0M0.28%676,228CommonSOLE
45784P101PODDINSULET CORP$66.8M0.28%212,749CommonSOLE
249906108DSGXDESCARTES SYS GROUP INC$66.0M0.28%649,631CommonSOLE
892672106TWTRADEWEB MKTS INC$65.5M0.27%447,615CommonSOLE
43300A203HLTHILTON WORLDWIDE HLDGS INC$65.4M0.27%245,371CommonSOLE
922475108VEEVVEEVA SYS INC$65.2M0.27%226,569CommonSOLE
929160109VMCVULCAN MATLS CO$64.9M0.27%248,683CommonSOLE
74762E102QUREQUANTA SVCS INC$64.3M0.27%170,057CommonSOLE
69753M105PLMRPALOMAR HLDGS INC$62.9M0.26%407,936CommonSOLE
94106B101WCNWASTE CONNECTIONS INC$62.6M0.26%335,019CommonSOLE
441593100HLIHOULIHAN LOKEY INC$62.2M0.26%345,524CommonSOLE
750917106RMBSRAMBUS INC DEL$61.6M0.26%962,419CommonSOLE
M98068105WIXWIX COM LTD$61.2M0.26%385,952CommonSOLE
02043Q107ALNYALNYLAM PHARMACEUTICALS INC$60.9M0.26%186,905CommonSOLE
76155X100RVMDREVOLUTION MEDICINES INC$60.7M0.25%1,649,404CommonSOLE
74624M102PPURE STORAGE INC$59.5M0.25%1,033,724CommonSOLE
61559X104MLTXMOONLAKE IMMUNOTHERAPEUTICS$59.4M0.25%1,259,376CommonSOLE
109194100BFAMBRIGHT HORIZONS FAM SOL IN D$58.3M0.24%471,627CommonSOLE
204166102CVLTCOMMVAULT SYS INC$58.2M0.24%333,753CommonSOLE
679295105OKTAOKTA INC$57.0M0.24%570,323CommonSOLE
49714P108KNSLKINSALE CAP GROUP INC$56.8M0.24%117,394CommonSOLE
871607107SNPSSYNOPSYS INC$55.7M0.23%108,571CommonSOLE
67103H107ORLYOREILLY AUTOMOTIVE INC$55.2M0.23%612,389CommonSOLE
958102105WDCWESTERN DIGITAL CORP$55.2M0.23%862,236CommonSOLE
97650W108WTFCWINTRUST FINL CORP$54.7M0.23%440,858CommonSOLE
126408103CSXCSX CORP$54.6M0.23%1,673,055CommonSOLE
81663L200WGSGENEDX HOLDINGS CORP$54.4M0.23%589,188CommonSOLE
87422Q109TLNTALEN ENERGY CORP$54.2M0.23%186,558CommonSOLE
G0750C108AXTAAXALTA COATING SYS LTD$53.7M0.23%1,808,608CommonSOLE
316773100FITBFIFTH THIRD BANCORP$52.6M0.22%1,279,918CommonSOLE
05589G102BWINTHE BALDWIN INSURANCE GRP IN$52.5M0.22%1,225,948CommonSOLE
624758108MWAMUELLER WTR PRODS INC$52.1M0.22%2,166,945CommonSOLE
03820C105AITAPPLIED INDL TECHNOLOGIES IN$51.3M0.22%220,640CommonSOLE
925050106VRNAVERONA PHARMA PLC$51.1M0.21%539,813CommonSOLE
74164F103PRIMPRIMORIS SVCS CORP$51.0M0.21%654,223CommonSOLE
G87110105FTITECHNIPFMC PLC$50.8M0.21%1,475,941CommonSOLE
05368V106AVNTAVIENT CORPORATION$50.4M0.21%1,560,102CommonSOLE
G4705A100ICLRICON PLC$50.3M0.21%345,828CommonSOLE
122017106BURLBURLINGTON STORES INC$49.7M0.21%213,644CommonSOLE
665531307NOGNORTHERN OIL & GAS INC$49.3M0.21%1,740,304CommonSOLE
G25457105CRDOCREDO TECHNOLOGY GROUP HOLDI$48.9M0.21%528,378CommonSOLE
533900106LECOLINCOLN ELEC HLDGS INC$48.3M0.20%233,123CommonSOLE
00827B106AFRMAFFIRM HLDGS INC$48.3M0.20%698,779CommonSOLE
27579R104EWBCEAST WEST BANCORP INC$47.7M0.20%471,928CommonSOLE
217204106CPRTCOPART INC$47.5M0.20%967,903CommonSOLE
983793100XPOXPO INC$47.4M0.20%375,621CommonSOLE
78709Y105SAIASAIA INC$47.4M0.20%173,095CommonSOLE
36266G107GEHCGE HEALTHCARE TECHNOLOGIES I$46.8M0.20%631,183CommonSOLE
25278X109FANGDIAMONDBACK ENERGY INC$46.3M0.19%336,693CommonSOLE
71424F105PRPERMIAN RESOURCES CORP$45.6M0.19%3,348,130CommonSOLE
10576N102BRZEBRAZE INC$45.0M0.19%1,600,304CommonSOLE
445658107JBHTHUNT J B TRANS SVCS INC$44.9M0.19%312,949CommonSOLE
450056106IRTCIRHYTHM TECHNOLOGIES INC$44.7M0.19%290,570CommonSOLE
184496107CLHCLEAN HARBORS INC$44.4M0.19%192,259CommonSOLE
29362U104ENTGENTEGRIS INC$44.0M0.18%545,688CommonSOLE
579780206MKCMCCORMICK & CO INC$42.2M0.18%556,692CommonSOLE
343412102FLRFLUOR CORP NEW$42.0M0.18%818,396CommonSOLE
002896207ANFABERCROMBIE & FITCH CO$41.9M0.18%505,574CommonSOLE
049468101TEAMATLASSIAN CORPORATION$41.8M0.18%205,968CommonNONE
15101Q207CLSCELESTICA INC$40.0M0.17%256,447CommonSOLE
45827U109INTAINTAPP INC$38.7M0.16%748,884CommonSOLE
98420N105XENEXENON PHARMACEUTICALS INC$36.1M0.15%1,152,605CommonSOLE
01644J108ALKTALKAMI TECHNOLOGY INC$35.9M0.15%1,190,584CommonSOLE
770700102HOODROBINHOOD MKTS INC$35.9M0.15%382,981CommonSOLE
683344105ONTOONTO INNOVATION INC$35.4M0.15%351,064CommonSOLE
21874A106CORZCORE SCIENTIFIC INC NEW$33.8M0.14%1,982,653CommonSOLE
090572207BIOBIO RAD LABS INC$33.7M0.14%139,505CommonSOLE
G3934V109GENIGENIUS SPORTS LIMITED$33.3M0.14%3,202,135CommonSOLE
87612G101TRGPTARGA RES CORP$33.3M0.14%191,069CommonSOLE
282559103ETNBGBP89BIO INC$33.1M0.14%3,370,817CommonSOLE
46222L108IONQIONQ INC$28.9M0.12%671,627CommonSOLE
78473E103SPXCSPX TECHNOLOGIES INC$23.0M0.10%137,019CommonSOLE
053611109AVYAVERY DENNISON CORP$20.0M0.08%113,903CommonSOLE
767292105RIOTRIOT PLATFORMS INC$19.6M0.08%1,730,296CommonSOLE
088786108BCYCBICYCLE THERAPEUTICS PLC$19.3M0.08%2,780,491CommonSOLE
86333M108LRNSTRIDE INC$18.4M0.08%126,656CommonSOLE
13100M509CALXCALIX INC$15.5M0.06%291,149CommonSOLE
624756102MLIMUELLER INDS INC$12.1M0.05%151,701CommonSOLE
172908105CTASCINTAS CORP$11.4M0.05%51,358CommonSOLE
191216100KOCOCA COLA CO$11.4M0.05%161,050CommonSOLE
969457100WMBWILLIAMS COS INC$11.1M0.05%177,318CommonSOLE
02079K107GOOGALPHABET INC$10.1M0.04%56,758CommonSOLE
03076C106AMPAMERIPRISE FINL INC$9.3M0.04%17,476CommonSOLE
85254J102STAGSTAG INDL INC$8.6M0.04%235,683CommonSOLE
606822104MUFGMITSUBISHI UFJ FINL GROUP IN$8.4M0.04%609,995CommonSOLE
86562M209SMFGSUMITOMO MITSUI FINL GROUP I$8.2M0.03%541,882CommonSOLE
742718109PGPROCTER AND GAMBLE CO$7.7M0.03%48,627CommonSOLE
968223206WLYWILEY JOHN & SONS INC$7.6M0.03%169,768CommonSOLE
872540109TJXTJX COS INC NEW$7.3M0.03%59,349CommonSOLE
55261F104MTBM & T BK CORP$7.1M0.03%36,424CommonSOLE
G5960L103MDTMEDTRONIC PLC$6.4M0.03%73,815CommonSOLE
931142103WMTWALMART INC$6.3M0.03%64,066CommonSOLE
31946M103FCNCAFIRST CTZNS BANCSHARES INC N$6.2M0.03%3,185CommonSOLE
754730109RJFRAYMOND JAMES FINL INC$6.1M0.03%40,095CommonSOLE
65339F101NEENEXTERA ENERGY INC$6.1M0.03%88,087CommonSOLE
22160N109CSGPCOSTAR GROUP INC$6.0M0.03%74,545CommonSOLE
31620M106FISFIDELITY NATL INFORMATION SV$6.0M0.03%73,340CommonSOLE
58155Q103MCKMCKESSON CORP$5.9M0.02%8,011CommonSOLE
29444U700EQIXEQUINIX INC$5.6M0.02%7,007CommonSOLE
883556102TMOTHERMO FISHER SCIENTIFIC INC$5.5M0.02%13,626CommonSOLE
580135101MCDMCDONALDS CORP$5.3M0.02%18,155CommonSOLE
G3922B107GGENPACT LIMITED$4.5M0.02%102,176CommonSOLE
315616102FFIVF5 INC$4.3M0.02%14,770CommonSOLE
80105N105SNYSANOFI$4.2M0.02%86,114CommonSOLE
949746101WMT2WELLS FARGO CO NEW$4.1M0.02%51,482CommonSOLE
37940X102GPNGLOBAL PMTS INC$3.5M0.01%43,566CommonSOLE
70438V106PCTYPAYLOCITY HLDG CORP$3.4M0.01%18,840CommonSOLE
235851102DHRDANAHER CORPORATION$3.2M0.01%16,110CommonSOLE
171779309CIENCIENA CORP$2.6M0.01%31,750CommonSOLE
026874784AIGAMERICAN INTL GROUP INC$2.2M0.01%25,843CommonSOLE
452308109ITWILLINOIS TOOL WKS INC$2.2M0.01%8,882CommonSOLE
437076102HDHOME DEPOT INC$2.1M0.01%5,666CommonSOLE
75321W103PACKRANPAK HOLDINGS CORP$1.5M0.01%407,328CommonSOLE
09857L108BKNGBOOKING HOLDINGS INC$1.2M0.01%210CommonSOLE
084670702BRK/BBERKSHIRE HATHAWAY INC DEL$1.1M0.00%2,350CommonSOLE
461202103INTUINTUIT$1.1M0.00%1,410CommonSOLE
459200101IBMINTERNATIONAL BUSINESS MACHS$978,6700.00%3,320CommonSOLE
69608A108PLTRPALANTIR TECHNOLOGIES INC$957,7330.00%7,026CommonSOLE
58733R102MELIMERCADOLIBRE INC$818,0660.00%313CommonSOLE
142152107CAICARIS LIFE SCIENCES INC$801,6000.00%30,000CommonSOLE
729132100PLXSPLEXUS CORP$703,6120.00%5,200CommonSOLE
46120E602ISRGINTUITIVE SURGICAL INC$695,5650.00%1,280CommonSOLE
26884L109EQTEQT CORP$620,5250.00%10,640CommonSOLE
G8994E103TTTRANE TECHNOLOGIES PLC$592,2530.00%1,354CommonSOLE
46428Q109SLVISHARES SILVER TR$549,8960.00%16,760CommonSOLE
200340107CMACOMERICA INC$510,6040.00%8,560CommonSOLE
09073M104TECHBIO-TECHNE CORP$492,3770.00%9,570CommonSOLE
03831W108APPAPPLOVIN CORP$449,5090.00%1,284CommonSOLE
670100205NVONOVO-NORDISK A S$413,7750.00%5,995CommonSOLE
101137107BSXBOSTON SCIENTIFIC CORP$394,0870.00%3,669CommonSOLE
462222100IONSIONIS PHARMACEUTICALS INC$377,7550.00%9,561CommonSOLE
58506Q109MEDPMEDPACE HLDGS INC$220,6440.00%703CommonSOLE
05352A100AVTRAVANTOR INC$206,5840.00%15,348CommonSOLE

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.