MondegarAI
WESTFIELD CAPITAL MANAGEMENT CO LP

Q4 2025 · 13F-HR

WESTFIELD CAPITAL MANAGEMENT CO LPholdings as filed

Filed 2026-02-11 · accession 0001177719-26-000005

$24.01B
Reported value
241
Positions
2025-12-31
Period end
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The Brief · WESTFIELD CAPITAL MANAGEMENT CO LP · Q4 2025

AI · grounded in 13F

WESTFIELD CAPITAL MANAGEMENT CO LP closed its position in 2GH for a reduction of $200.8M. The fund established new positions in ABVX for $136.2M, APG for $132.1M, and BROS for $108.9M. Additionally, the fund trimmed its holdings in MNDY by 97.9% and TDG by 92.6%.

Holdings as filed

CUSIPTickerIssuerValue% port.SharesClassVoting
67066G104NVDANVIDIA CORPORATION$1.11B4.62%5,951,049CommonSOLE
04351P101ASNDUSDASCENDIS PHARMA A/S$1.11B4.61%5,185,696CommonSOLE
037833100AAPLAPPLE INC$890.2M3.71%3,274,318CommonSOLE
594918104MSFTMICROSOFT CORP$784.1M3.27%1,621,219CommonSOLE
02079K305GOOGLALPHABET INC$681.9M2.84%2,178,478CommonSOLE
199908104FIXCOMFORT SYS USA INC$624.2M2.60%668,835CommonSOLE
023135106AMZNAMAZON COM INC$538.0M2.24%2,330,770CommonSOLE
05464C101AXONAXON ENTERPRISE INC$472.1M1.97%831,177CommonSOLE
G3730V105FTAIFTAI AVIATION LTD$462.7M1.93%2,350,625CommonSOLE
443201108HWMHOWMET AEROSPACE INC$455.0M1.90%2,219,125CommonSOLE
30303M102METAMETA PLATFORMS INC$432.5M1.80%655,283CommonSOLE
11135F101AVGOBROADCOM INC$385.0M1.60%1,112,318CommonSOLE
92537N108VRTVERTIV HOLDINGS CO$369.0M1.54%2,277,716CommonSOLE
532457108LLYELI LILLY & CO$298.3M1.24%277,549CommonSOLE
876030107TPRTAPESTRY INC$268.1M1.12%2,098,104CommonSOLE
76155X100RVMDREVOLUTION MEDICINES INC$226.6M0.94%2,845,013CommonSOLE
81762P102NOWSERVICENOW INC$226.2M0.94%1,476,803CommonSOLE
50212V100LPLALPL FINL HLDGS INC$223.4M0.93%625,562CommonSOLE
92826C839VVISA INC$211.8M0.88%603,926CommonSOLE
060505104BACBANK AMERICA CORP$210.3M0.88%3,823,609CommonSOLE
88160R101TSLATESLA INC$207.6M0.86%461,675CommonSOLE
574795100MASIMASIMO CORP$198.0M0.82%1,522,049CommonSOLE
03990B101ARESARES MANAGEMENT CORPORATION$186.1M0.78%1,151,200CommonSOLE
031100100AMEAMETEK INC$184.8M0.77%900,216CommonSOLE
773121108RKLBROCKET LAB CORP$180.8M0.75%2,592,443CommonSOLE
816850101SMTCSEMTECH CORP$180.4M0.75%2,448,612CommonSOLE
42226A107HQYHEALTHEQUITY INC$178.9M0.75%1,952,452CommonSOLE
316773100FITBFIFTH THIRD BANCORP$175.4M0.73%3,746,926CommonSOLE
053332102AZOAUTOZONE INC$173.4M0.72%51,122CommonSOLE
573874104MRVLMARVELL TECHNOLOGY INC$165.5M0.69%1,947,807CommonSOLE
632307104NTRANATERA INC$163.7M0.68%714,692CommonSOLE
92243G108PCVXVAXCYTE INC$163.3M0.68%3,539,717CommonSOLE
147448104CWSTCASELLA WASTE SYS INC$163.1M0.68%1,665,226CommonSOLE
64110L106NFLXNETFLIX INC$149.8M0.62%1,597,547CommonSOLE
268150109DTDYNATRACE INC$145.5M0.61%3,356,708CommonSOLE
833445109SNOWSNOWFLAKE INC$142.4M0.59%649,105CommonSOLE
443573100HUBSHUBSPOT INC$141.3M0.59%352,154CommonSOLE
79589L106IOTSAMSARA INC$140.2M0.58%3,953,970CommonSOLE
00370M103ABVXABIVAX SA$136.2M0.57%1,009,966CommonSOLE
76243J105RYTMRHYTHM PHARMACEUTICALS INC$135.6M0.57%1,267,158CommonSOLE
874039100TSMTAIWAN SEMICONDUCTOR MFG LTD$135.6M0.56%446,195CommonSOLE
55306N104MKSIMKS INC.$134.2M0.56%839,773CommonSOLE
52490G102LEGNLEGEND BIOTECH CORP$134.0M0.56%6,164,677CommonSOLE
204166102CVLTCOMMVAULT SYS INC$132.5M0.55%1,057,077CommonSOLE
81663L200WGSGENEDX HOLDINGS CORP$132.4M0.55%1,018,261CommonSOLE
00187Y100APGAPI GROUP CORP$132.1M0.55%3,453,355CommonSOLE
049468101TEAMATLASSIAN CORPORATION$131.7M0.55%812,215CommonSOLE
000899104ADMAADMA BIOLOGICS INC$127.6M0.53%6,992,907CommonSOLE
758750103RRXREGAL REXNORD CORPORATION$125.3M0.52%893,100CommonSOLE
V7780T103RCLROYAL CARIBBEAN GROUP$125.1M0.52%448,653CommonSOLE
19247G107COHRCOHERENT CORP$122.8M0.51%665,123CommonSOLE
77543R102ROKUROKU INC$120.7M0.50%1,112,478CommonSOLE
55354G100MSCIMSCI INC$119.2M0.50%207,792CommonSOLE
74164F103PRIMPRIMORIS SVCS CORP$118.2M0.49%952,196CommonSOLE
36828A101GEVGE VERNOVA INC$116.3M0.48%177,934CommonSOLE
74762E102QUREQUANTA SVCS INC$115.4M0.48%273,528CommonSOLE
69753M105PLMRPALOMAR HLDGS INC$113.2M0.47%840,226CommonSOLE
538034109LYVLIVE NATION ENTERTAINMENT IN$110.5M0.46%775,234CommonSOLE
45784P101PODDINSULET CORP$109.8M0.46%386,468CommonSOLE
26701L100BROSDUTCH BROS INC$108.9M0.45%1,779,616CommonSOLE
03073E105CORCENCORA INC$107.8M0.45%319,215CommonSOLE
89055F103BLDTOPBUILD CORP$106.6M0.44%255,451CommonSOLE
249906108DSGXDESCARTES SYS GROUP INC$104.7M0.44%1,193,869CommonSOLE
422806208HEI/AHEICO CORP NEW$104.0M0.43%412,041CommonSOLE
43300A203HLTHILTON WORLDWIDE HLDGS INC$102.8M0.43%357,721CommonSOLE
18915M107NETCLOUDFLARE INC$102.4M0.43%519,475CommonSOLE
45073V108ITTITT INC$101.9M0.42%587,446CommonSOLE
74624M102PPURE STORAGE INC$101.9M0.42%1,520,219CommonSOLE
45168D104IDXXIDEXX LABS INC$99.8M0.42%147,447CommonSOLE
093712107BEBLOOM ENERGY CORP$99.5M0.41%1,145,296CommonSOLE
983793100XPOXPO INC$98.4M0.41%724,214CommonSOLE
27579R104EWBCEAST WEST BANCORP INC$98.2M0.41%874,152CommonSOLE
25809K105DASHDOORDASH INC$96.3M0.40%425,080CommonSOLE
00287Y109ABBVABBVIE INC$95.9M0.40%419,784CommonSOLE
252131107DXCMDEXCOM INC$95.6M0.40%1,439,689CommonSOLE
01644J108ALKTALKAMI TECHNOLOGY INC$95.0M0.40%4,118,355CommonSOLE
65290E101NXTNEXTPOWER INC$95.0M0.40%1,090,300CommonSOLE
50077B207KTOSKRATOS DEFENSE & SEC SOLUTIO$94.6M0.39%1,245,587CommonSOLE
G8068L108SNSHARKNINJA INC$94.0M0.39%840,060CommonSOLE
68389X105ORCLORACLE CORP$92.5M0.39%474,397CommonSOLE
773903109ROKROCKWELL AUTOMATION INC$91.0M0.38%233,795CommonSOLE
441593100HLIHOULIHAN LOKEY INC$90.6M0.38%520,002CommonSOLE
12541W209CHRWC H ROBINSON WORLDWIDE INC$89.5M0.37%556,472CommonSOLE
68404L201OPCHOPTION CARE HEALTH INC$88.1M0.37%2,765,305CommonSOLE
122017106BURLBURLINGTON STORES INC$87.3M0.36%302,307CommonSOLE
G87110105FTITECHNIPFMC PLC$87.0M0.36%1,952,427CommonSOLE
67103H107ORLYOREILLY AUTOMOTIVE INC$86.9M0.36%952,702CommonSOLE
45245E109IMAXIMAX CORP$86.7M0.36%2,346,486CommonSOLE
G3323L100FNFABRINET$86.6M0.36%190,170CommonSOLE
92840M102VSTVISTRA CORP$86.1M0.36%533,945CommonSOLE
33768G107FCFSFIRSTCASH HOLDINGS INC$85.7M0.36%537,734CommonSOLE
37959E102GLGLOBE LIFE INC$85.1M0.35%608,813CommonSOLE
71424F105PRPERMIAN RESOURCES CORP$83.5M0.35%5,951,186CommonSOLE
493267108KEYKEYCORP$83.4M0.35%4,040,297CommonSOLE
697435105PANWPALO ALTO NETWORKS INC$82.6M0.34%448,460CommonSOLE
26142V105DKNGDRAFTKINGS INC NEW$82.1M0.34%2,383,054CommonSOLE
533900106LECOLINCOLN ELEC HLDGS INC$80.9M0.34%337,725CommonSOLE
74275K108PCORPROCORE TECHNOLOGIES INC$80.4M0.33%1,105,325CommonSOLE
89400J107TRUTRANSUNION$80.1M0.33%933,553CommonSOLE
M2029K104BIRKBIRKENSTOCK HOLDING PLC$80.0M0.33%1,954,801CommonSOLE
97650W108WTFCWINTRUST FINL CORP$78.3M0.33%559,762CommonSOLE
683344105ONTOONTO INNOVATION INC$76.3M0.32%483,082CommonSOLE
91324P102UNHUNITEDHEALTH GROUP INC$76.0M0.32%230,278CommonSOLE
303250104FICOFAIR ISAAC CORP$75.4M0.31%44,593CommonSOLE
457669307INSMINSMED INC$75.3M0.31%432,521CommonSOLE
10576N102BRZEBRAZE INC$75.0M0.31%2,187,275CommonSOLE
466313103JBLJABIL INC$74.9M0.31%328,412CommonSOLE
78709Y105SAIASAIA INC$74.7M0.31%228,751CommonSOLE
235851102DHRDANAHER CORPORATION$73.6M0.31%321,487CommonSOLE
03820C105AITAPPLIED INDL TECHNOLOGIES IN$73.3M0.31%285,290CommonSOLE
929160109VMCVULCAN MATLS CO$72.5M0.30%254,044CommonSOLE
315616102FFIVF5 INC$71.8M0.30%281,299CommonSOLE
75700L108RRRRED ROCK RESORTS INC$71.7M0.30%1,157,653CommonSOLE
826919102SLABSILICON LABORATORIES INC$71.5M0.30%547,403CommonSOLE
45167R104IEXIDEX CORP$71.5M0.30%401,998CommonSOLE
15118V207CELHCELSIUS HLDGS INC$70.6M0.29%1,544,215CommonSOLE
983134107WYNNWYNN RESORTS LTD$70.0M0.29%581,717CommonSOLE
48251W104KKRKKR & CO INC$69.7M0.29%546,499CommonSOLE
52476L109LGNLEGENCE CORP$69.4M0.29%1,613,326CommonSOLE
H2906T109GRMNGARMIN LTD$68.1M0.28%335,744CommonSOLE
G25457105CRDOCREDO TECHNOLOGY GROUP HOLDI$67.7M0.28%470,687CommonSOLE
363576109AJGGALLAGHER ARTHUR J & CO$67.2M0.28%259,491CommonSOLE
60937P106MDBMONGODB INC$67.0M0.28%159,529CommonSOLE
09581B103OWLBLUE OWL CAPITAL INC$66.1M0.28%4,423,608CommonSOLE
00650F109ADPTADAPTIVE BIOTECHNOLOGIES COR$65.9M0.27%4,060,481CommonSOLE
G3934V109GENIGENIUS SPORTS LIMITED$65.6M0.27%5,951,203CommonSOLE
00827B106AFRMAFFIRM HLDGS INC$63.4M0.26%851,834CommonSOLE
98980G102ZSZSCALER INC$63.2M0.26%280,807CommonSOLE
445658107JBHTHUNT J B TRANS SVCS INC$61.8M0.26%318,165CommonSOLE
126408103CSXCSX CORP$61.8M0.26%1,705,507CommonSOLE
485924104KRMNKARMAN HLDGS INC$61.2M0.26%836,981CommonSOLE
13100M509CALXCALIX INC$60.6M0.25%1,145,292CommonSOLE
74164M108PRIPRIMERICA INC$60.6M0.25%234,597CommonSOLE
615369105MCOMOODYS CORP$60.4M0.25%118,321CommonSOLE
695156109PKGPACKAGING CORP AMER$58.8M0.24%284,914CommonSOLE
09073M104TECHBIO-TECHNE CORP$58.5M0.24%994,330CommonSOLE
450056106IRTCIRHYTHM TECHNOLOGIES INC$57.7M0.24%325,063CommonSOLE
184496107CLHCLEAN HARBORS INC$57.6M0.24%245,594CommonSOLE
871607107SNPSSYNOPSYS INC$57.1M0.24%121,649CommonSOLE
258278100DORMDORMAN PRODS INC$56.9M0.24%462,212CommonSOLE
92846Q107COCOVITA COCO CO INC$56.9M0.24%1,073,610CommonSOLE
40131M109GHGUARDANT HEALTH INC$55.1M0.23%539,190CommonSOLE
98420N105XENEXENON PHARMACEUTICALS INC$55.0M0.23%1,226,771CommonSOLE
94106B101WCNWASTE CONNECTIONS INC$54.9M0.23%313,276CommonSOLE
007903107AMDADVANCED MICRO DEVICES INC$53.6M0.22%250,455CommonSOLE
25278X109FANGDIAMONDBACK ENERGY INC$53.3M0.22%354,655CommonSOLE
701094104PHPARKER-HANNIFIN CORP$50.9M0.21%57,873CommonNONE
85914M107STEPSTEPSTONE GROUP INC$50.5M0.21%786,501CommonSOLE
090572207BIOBIO RAD LABS INC$50.0M0.21%165,107CommonSOLE
46222L108IONQIONQ INC$50.0M0.21%1,114,665CommonSOLE
518415104LSCCLATTICE SEMICONDUCTOR CORP$49.9M0.21%678,146CommonSOLE
302520101FNBF N B CORP$49.6M0.21%2,903,113CommonSOLE
05368V106AVNTAVIENT CORPORATION$49.2M0.20%1,574,530CommonSOLE
12008R107BLDRBUILDERS FIRSTSOURCE INC$48.9M0.20%475,697CommonSOLE
407497106HLNEHAMILTON LANE INC$48.8M0.20%363,487CommonSOLE
79466L302CRMSALESFORCE INC$47.3M0.20%178,508CommonSOLE
87422Q109TLNTALEN ENERGY CORP$46.6M0.19%124,227CommonSOLE
G8994E103TTTRANE TECHNOLOGIES PLC$46.0M0.19%118,163CommonSOLE
888787108TOSTTOAST INC$45.0M0.19%1,268,337CommonSOLE
78351F107RYANRYAN SPECIALTY HOLDINGS INC$42.0M0.18%814,334CommonSOLE
55405Y100MTSIMACOM TECH SOLUTIONS HLDGS I$39.6M0.16%231,093CommonSOLE
G63755105NIQNIQ GLOBAL INTELLIGENCE PLC$39.4M0.16%2,388,660CommonSOLE
750491102RDNTRADNET INC$37.9M0.16%531,761CommonSOLE
771049103RBLXROBLOX CORP$37.4M0.16%461,670CommonSOLE
02043Q107ALNYALNYLAM PHARMACEUTICALS INC$37.2M0.15%93,444CommonSOLE
87612G101TRGPTARGA RES CORP$36.6M0.15%198,542CommonSOLE
770700102HOODROBINHOOD MKTS INC$35.3M0.15%312,554CommonSOLE
05370A108RNAGBPAVIDITY BIOSCIENCES INC$34.0M0.14%471,127CommonSOLE
750917106RMBSRAMBUS INC DEL$33.3M0.14%362,092CommonSOLE
04626A103ALABASTERA LABS INC$32.5M0.14%195,294CommonSOLE
78473E103SPXCSPX TECHNOLOGIES INC$28.3M0.12%141,462CommonSOLE
69608A108PLTRPALANTIR TECHNOLOGIES INC$27.5M0.11%154,585CommonNONE
038169207APLDAPPLIED DIGITAL CORP$25.4M0.11%1,034,397CommonSOLE
346375108FORMFORMFACTOR INC$25.1M0.10%449,604CommonSOLE
893641100TDGTRANSDIGM GROUP INC$21.5M0.09%16,193CommonSOLE
088786108BCYCBICYCLE THERAPEUTICS PLC$21.4M0.09%3,016,026CommonSOLE
76655K103RGTIRIGETTI COMPUTING INC$20.7M0.09%935,778CommonSOLE
21874A106CORZCORE SCIENTIFIC INC NEW$20.3M0.08%1,392,132CommonSOLE
02079K107GOOGALPHABET INC$14.4M0.06%45,820CommonSOLE
624756102MLIMUELLER INDS INC$14.3M0.06%124,927CommonSOLE
969457100WMBWILLIAMS COS INC$13.9M0.06%231,177CommonSOLE
70339W104PTRNPATTERN GROUP INC$13.7M0.06%1,184,716CommonSOLE
464287671IUSGISHARES TR$11.2M0.05%66,532CommonSOLE
191216100KOCOCA COLA CO$9.3M0.04%132,670CommonSOLE
86562M209SMFGSUMITOMO MITSUI FINL GROUP I$8.8M0.04%453,681CommonSOLE
949746101WMT2WELLS FARGO CO NEW$8.1M0.03%86,942CommonSOLE
606822104MUFGMITSUBISHI UFJ FINL GROUP IN$8.1M0.03%510,711CommonSOLE
172908105CTASCINTAS CORP$7.9M0.03%42,271CommonSOLE
883556102TMOTHERMO FISHER SCIENTIFIC INC$7.9M0.03%13,681CommonSOLE
931142103WMTWALMART INC$7.9M0.03%70,910CommonSOLE
231021106CMICUMMINS INC$7.8M0.03%15,274CommonSOLE
872540109TJXTJX COS INC NEW$7.4M0.03%48,343CommonSOLE
171779309CIENCIENA CORP$7.4M0.03%31,750CommonSOLE
437076102HDHOME DEPOT INC$7.0M0.03%20,347CommonSOLE
478160104JNJJOHNSON & JOHNSON$6.9M0.03%33,288CommonSOLE
31946M103FCNCAFIRST CTZNS BANCSHARES INC D$6.8M0.03%3,185CommonSOLE
65339F101NEENEXTERA ENERGY INC$6.7M0.03%83,926CommonSOLE
754730109RJFRAYMOND JAMES FINL INC$6.4M0.03%40,095CommonSOLE
05946K101BBVABANCO BILBAO VIZCAYA ARGENTA$6.2M0.03%266,816CommonSOLE
464287614IWFISHARES TR$6.2M0.03%13,058CommonSOLE
38141G104GSGOLDMAN SACHS GROUP INC$6.2M0.03%7,029CommonSOLE
55261F104MTBM & T BK CORP$6.0M0.02%29,712CommonSOLE
775711104ROLROLLINS INC$6.0M0.02%99,399CommonSOLE
12572Q105CMECME GROUP INC$5.9M0.02%21,785CommonSOLE
G5960L103MDTMEDTRONIC PLC$5.8M0.02%59,970CommonSOLE
58933Y105MRKMERCK & CO INC$5.6M0.02%53,552CommonSOLE
58155Q103MCKMCKESSON CORP$5.6M0.02%6,840CommonSOLE
580135101MCDMCDONALDS CORP$5.4M0.02%17,757CommonSOLE
427866108HSYHERSHEY CO$5.3M0.02%29,000CommonSOLE
172967424CCITIGROUP INC$5.1M0.02%43,744CommonSOLE
375558103GILDGILEAD SCIENCES INC$5.1M0.02%41,515CommonSOLE
30212P303EXPEEXPEDIA GROUP INC$4.7M0.02%16,577CommonSOLE
84265V105SCCOSOUTHERN COPPER CORP$4.7M0.02%32,634CommonSOLE
806857108SLBSLB LIMITED$4.6M0.02%120,910CommonSOLE
406216101HALHALLIBURTON CO$3.9M0.02%136,881CommonSOLE
14149Y108CAHCARDINAL HEALTH INC$3.7M0.02%17,831CommonSOLE
366651107ITGARTNER INC$3.6M0.02%14,370CommonSOLE
717081103PFEPFIZER INC$3.4M0.01%137,936CommonSOLE
25746U109DDOMINION ENERGY INC$2.7M0.01%45,694CommonSOLE
464287481IWPISHARES TR$2.5M0.01%18,280CommonSOLE
75321W103PACKRANPAK HOLDINGS CORP$2.2M0.01%407,328CommonSOLE
M7S64H106MNDYMONDAY COM LTD$2.1M0.01%13,955CommonSOLE
084670702BRK/BBERKSHIRE HATHAWAY INC DEL$1.2M0.00%2,350CommonSOLE
09857L108BKNGBOOKING HOLDINGS INC$1.1M0.00%210CommonSOLE
46428Q109SLVISHARES SILVER TR$1.1M0.00%16,760CommonSOLE
459200101IBMINTERNATIONAL BUSINESS MACHS$983,4170.00%3,320CommonSOLE
03831W108APPAPPLOVIN CORP$865,1960.00%1,284CommonSOLE
101137107BSXBOSTON SCIENTIFIC CORP$826,8750.00%8,672CommonSOLE
729132100PLXSPLEXUS CORP$764,4000.00%5,200CommonSOLE
200340107CMACOMERICA INC$744,1210.00%8,560CommonSOLE
58733R102MELIMERCADOLIBRE INC$630,4630.00%313CommonSOLE
26884L109EQTEQT CORP$570,3040.00%10,640CommonSOLE
92532F100VRTXVERTEX PHARMACEUTICALS INC$513,2040.00%1,132CommonSOLE
171484108CHDNCHURCHILL DOWNS INC$492,6670.00%4,330CommonSOLE
G4705A100ICLRICON PLC$461,7020.00%2,534CommonNONE
745848101LUNGPULMONX CORP$408,6360.00%184,903CommonSOLE
171757206CDTXCIDARA THERAPEUTICS INC$311,6760.00%1,411CommonSOLE
462222100IONSIONIS PHARMACEUTICALS INC$249,7500.00%3,157CommonSOLE
038222105AMATAPPLIED MATLS INC$240,5430.00%936CommonSOLE
85254J102STAGSTAG INDL INC$237,7270.00%6,467CommonSOLE
07373V105BEAMBEAM THERAPEUTICS INC$223,7840.00%8,073CommonSOLE

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.