Fund HoldingsWESTFIELD CAPITAL MANAGEMENT CO LP

Total Portfolio Value
$23.83B
Total Bought
$4.87B
Total Sold
$4.82B
Net Transaction
+$53.62M
Filing Period:
Securities
SharesValue ($K)
Q4 2025
Q1 2026
Change
Q4 2025
Q1 2026
Weight (%)
Change
FTAI AVIATION LTD(FTAI)2,350,6252,848,227+497,602462,721697,8162.93%+235,095
COMFORT SYS USA INC(FIX)0620,915+620,9150856,2353.59%+856,235
INSMED INC(INSM)01,468,459+1,468,4590240,1221.01%+240,122
CHENIERE ENERGY INC(LNG)0459,044+459,0440130,2580.55%+130,258
AMER SPORTS INC(AS)03,937,521+3,937,5210129,6230.54%+129,623
VERTIV HOLDINGS CO(VRT)2,277,7161,921,696-356,020369,013481,5382.02%+112,526
AMERICAN INTL GROUP INC01,458,711+1,458,7110109,7680.46%+109,768
MKS INC.(MKSI)839,7731,046,763+206,990134,196240,5571.01%+106,361
JONES LANG LASALLE INC(JLL)0347,779+347,7790105,8360.44%+105,836
ROSS STORES INC(ROST)0471,916+471,9160102,2310.43%+102,231
WOODWARD INC(WWD)0272,185+272,185097,4200.41%+97,420
ARISTA NETWORKS INC(ANET)0780,402+780,402095,8180.40%+95,818
LIFE TIME GROUP HOLDINGS INC(LTH)03,185,515+3,185,515085,8180.36%+85,818
MORGAN STANLEY(MS)0496,558+496,558081,7190.34%+81,719
MASTEC INC(MTZ)0249,980+249,980080,4290.34%+80,429
PLEXUS CORP(PLXS)0384,493+384,493077,8750.33%+77,875
PERMIAN RESOURCES CORP(PR)5,951,1867,481,457+1,530,27183,495159,5050.67%+76,010
GUIDEWIRE SOFTWARE INC(GWRE)0486,581+486,581072,7730.31%+72,773
HOWMET AEROSPACE INC(HWM)2,219,1252,289,697+70,572454,965527,6842.21%+72,719
PALANTIR TECHNOLOGIES INC(PLTR)0674,557+674,557098,6740.41%+98,674
LOWES COS INC(LOW)0300,962+300,962071,1110.30%+71,111
GUARDANT HEALTH INC(GH)539,1901,362,539+823,34955,073125,8580.53%+70,785
NEWAMSTERDAM PHARMA COMPANY
ORDINARY SHARES
02,202,913+2,202,913070,5150.30%+70,515
QUANTA SVCS INC273,528331,816+58,288115,445182,1740.76%+66,728
CELSIUS HLDGS INC(CELH)1,544,2153,768,911+2,224,69670,632133,7210.56%+63,089
MICROCHIP TECHNOLOGY INC.(MCHP)0970,295+970,295062,6910.26%+62,691
FABRINET(FN)190,170284,874+94,70486,581148,5680.62%+61,987
BLOOM ENERGY CORP01,191,572+1,191,5720161,4460.68%+161,446
ASTERA LABS INC(ALAB)0860,113+860,113094,2680.40%+94,268
GE VERNOVA INC(GEV)0199,306+199,3060173,9740.73%+173,974
API GROUP CORP(APG)3,453,3554,634,929+1,181,574132,125187,8070.79%+55,682
INSTALLED BLDG PRODS INC(IBP)0208,248+208,248055,2170.23%+55,217
TECHNIPFMC PLC(FTI)1,952,4272,033,755+81,32887,000140,5930.59%+53,593
GLAUKOS CORP(GKOS)0482,219+482,219051,9160.22%+51,916
COEUR MNG INC(CDE)02,738,846+2,738,846051,4080.22%+51,408
MARRIOTT INTL INC NEW(MAR)0153,219+153,219050,1130.21%+50,113
MADRIGAL PHARMACEUTICALS INC(MDGL)094,813+94,813049,6320.21%+49,632
NXP SEMICONDUCTORS N V
COM
0247,996+247,996048,8210.20%+48,821
VAXCYTE INC(PCVX)3,539,7173,646,138+106,421163,323211,8770.89%+48,555
DIAMONDBACK ENERGY INC(FANG)354,655503,474+148,81953,31599,5820.42%+46,267
PLANET LABS PBC(PL)01,637,041+1,637,041045,7550.19%+45,755
ALNYLAM PHARMACEUTICALS INC(ALNY)0245,539+245,539081,2410.34%+81,241
ENTEGRIS INC(ENTG)0371,686+371,686043,5770.18%+43,577
RIOT PLATFORMS INC(RIOT)03,499,880+3,499,880043,2590.18%+43,259
TAPESTRY INC(TPR)02,198,862+2,198,8620310,2811.30%+310,281
LPL FINL HLDGS INC(LPLA)625,562881,506+255,944223,432265,1841.11%+41,752
CORPAY INC(CPAY)0143,120+143,120041,6470.17%+41,647
TARGA RES CORP(TRGP)0304,997+304,997076,4720.32%+76,472
NETFLIX INC.(NFLX)01,969,994+1,969,9940189,4150.79%+189,415
NEXTPOWER INC01,107,346+1,107,3460133,4910.56%+133,491
ELI LILLY & CO(LLY)277,549364,579+87,030298,277335,3291.41%+37,053
HILTON WORLDWIDE HLDGS INC(HLT)357,721457,425+99,704102,755139,0940.58%+36,338
LEGENCE CORP(LGN)1,613,3261,861,653+248,32769,438105,1090.44%+35,671
MICRON TECHNOLOGY INC(MU)0100,434+100,434033,9310.14%+33,931
RHYTHM PHARMACEUTICALS INC(RYTM)1,267,1581,929,123+661,965135,637167,7760.70%+32,139
GLOBE LIFE INC608,813842,423+233,61085,149117,2400.49%+32,091
ITT INC(ITT)0703,309+703,3090134,0010.56%+134,001
FREEPORT MCMORAN INC(FCX)0544,359+544,359031,9970.13%+31,997
TAIWAN SEMICONDUCTOR MANUFAC(TSM)0493,504+493,5040166,7800.70%+166,780
LENDINGCLUB ISSUANCE TR SER(HAPN)02,117,543+2,117,543030,3230.13%+30,323
FASTENAL CO(FAST)0638,334+638,334029,6190.12%+29,619
CENCORA INC0436,909+436,9090137,2510.58%+137,251
XENON PHARMACEUTICALS INC(XENE)1,226,7711,401,483+174,71254,98481,4960.34%+26,512
CATERPILLAR INC(CAT)032,325+32,325022,9010.10%+22,901
ROCKET LAB CORP(RKLB)2,592,4433,172,611+580,168180,849203,7450.85%+22,896
URANIUM ENERGY CORP(UEC)01,567,772+1,567,772021,1650.09%+21,165
KEYCORP(KEY)05,193,334+5,193,3340104,1260.44%+104,126
SAMSARA INC(IOT)05,072,821+5,072,8210160,7580.67%+160,758
PALO ALTO NETWORKS INC(PANW)448,460636,483+188,02382,606102,0410.43%+19,435
CREDO TECHNOLOGY GROUP HOLDI
ORDINARY SHARES
0926,219+926,219086,9440.36%+86,944
GARMIN LTD(GRMN)335,744376,362+40,61868,10687,3200.37%+19,214
BRAZE INC(BRZE)2,187,2753,973,906+1,786,63175,00293,8240.39%+18,822
JABIL INC(JBL)328,412349,209+20,79774,88592,7600.39%+17,876
CLEAN HARBORS INC(CLH)0261,092+261,092074,8630.31%+74,863
KARMAN HLDGS INC(KRMN)0964,305+964,305077,1930.32%+77,193
KRATOS DEFENSE & SEC SOLUTIO(KTOS)01,563,146+1,563,1460110,2170.46%+110,217
ORUKA THERAPEUTICS INC(ORKA)0313,130+313,130015,3590.06%+15,359
CALIX INC(CALX)1,145,2921,546,101+400,80960,62075,7430.32%+15,123
F5 INC(FFIV)281,299298,542+17,24371,80486,3770.36%+14,573
ROYAL CARIBBEAN GROUP
COM
448,653505,765+57,112125,138139,1760.58%+14,038
LIVE NATION ENTERTAINMENT IN(LYV)0810,710+810,7100123,6410.52%+123,641
XPO INC(XPO)724,214571,992-152,22298,428111,2810.47%+12,853
ABIVAX SA(ABVX)1,009,9661,322,938+312,972136,199147,3090.62%+11,110
DYNATRACE INC(DT)04,209,594+4,209,5940155,6710.65%+155,671
ADAPTIVE BIOTECHNOLOGIES COR(ADPT)4,060,4815,436,718+1,376,23765,94275,4620.32%+9,519
CLOUDFLARE INC(NET)0541,566+541,5660111,7470.47%+111,747
IDEX CORP(IEX)401,998426,019+24,02171,53280,7520.34%+9,220
EVERPURE INC(P)01,874,763+1,874,7630110,6860.46%+110,686
ROBINHOOD MKTS INC(HOOD)0633,384+633,384043,8940.18%+43,894
LINCOLN ELEC HLDGS INC(LECO)337,725358,165+20,44080,93289,2120.37%+8,279
DUTCH BROS INC(BROS)1,779,6162,313,357+533,741108,948117,1950.49%+8,247
AVIENT CORPORATION(AVNT)01,569,468+1,569,468056,9720.24%+56,972
MSCI INC(MSCI)207,792233,764+25,972119,216126,0010.53%+6,784
CSX CORP(CSX)01,658,299+1,658,299068,0730.29%+68,073
AMGEN INC(AMGN)017,052+17,05206,0000.03%+6,000
RIGETTI COMPUTING INC(RGTI)935,7781,895,313+959,53520,72726,6100.11%+5,883
STEPSTONE GROUP INC(STEP)01,177,971+1,177,971056,2130.24%+56,213
PACKAGING CORP AMER(PKG)284,914303,771+18,85758,75864,4660.27%+5,708
WYNN RESORTS LTD(WYNN)0740,013+740,013075,1480.32%+75,148
CIENA CORP(CIEN)031,750+31,750012,3260.05%+12,326
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