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Westfield Capital Management Co LP

Q1 2026 Holdings

Filed 2026-05-11 | 250 holdings | $23.8B | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Nvidia Corporation(NVDA)COM67066G104$1.1B6,317,0394.6%
Ascendis Pharma A/S(ASND)SPONSORED ADR04351P101$1.1B4,813,4404.6%
Comfort SYS USA Inc(FIX)COM199908104$856.2M620,9153.6%
Apple Inc(AAPL)COM037833100$795.2M3,133,1133.3%
Ftai Aviation LTD(FTAI)SHSG3730V105$697.8M2,848,2272.9%
Microsoft Corp(MSFT)COM594918104$610.6M1,649,5132.6%
Alphabet Inc(GOOGL)CAP STK CL A02079K305$582.8M2,026,7442.4%
Howmet Aerospace Inc(HWM)COM443201108$527.7M2,289,6972.2%
Vertiv Holdings Co(VRT)COM CL A92537N108$481.5M1,921,6962.0%
Amazon COM Inc(AMZN)COM023135106$474.8M2,279,6542.0%
Axon Enterprise Inc(AXON)COM05464C101$451.9M1,064,1341.9%
Broadcom Inc(AVGO)COM11135F101$382.8M1,236,9251.6%
ELI Lilly & Co(LLY)COM532457108$335.3M364,5791.4%
Tapestry Inc(TPR)COM876030107$310.3M2,198,8621.3%
Meta Platforms Inc(META)CL A30303M102$301.4M526,8221.3%
LPL Finl Hldgs Inc(LPLA)COM50212V100$265.2M881,5061.1%
MKS Inc.(MKSI)COM55306N104$240.6M1,046,7631.0%
Insmed Inc(INSM)COM PAR $.01457669307$240.1M1,468,4591.0%
Vaxcyte Inc(PCVX)COM92243G108$211.9M3,646,1380.9%
Rocket LAB Corp(RKLB)COM773121108$203.7M3,172,6110.9%
Netflix Inc.(NFLX)COM64110L106$189.4M1,969,9940.8%
API Group Corp(APG)COM STK00187Y100$187.8M4,634,9290.8%
Quanta Svcs Inc(PWR)COM74762E102$182.2M331,8160.8%
GE Vernova Inc(GEV)COM36828A101$174.0M199,3060.7%
Ares Management Corporation(ARES)CL A COM STK03990B101$171.6M1,572,7870.7%
Rhythm Pharmaceuticals Inc(RYTM)COM76243J105$167.8M1,929,1230.7%
Taiwan Semiconductor Manufac(TSM)SPONSORED ADS874039100$166.8M493,5040.7%
Marvell Technology Inc(MRVL)COM573874104$165.7M1,673,3810.7%
Bloom Energy Corp(BE)COM CL A093712107$161.4M1,191,5720.7%
Samsara Inc(IOT)COM CL A79589L106$160.8M5,072,8210.7%
Ametek Inc(AME)COM031100100$159.9M745,8320.7%
Permian Resources Corp(PR)CLASS A COM71424F105$159.5M7,481,4570.7%
Dynatrace Inc(DT)COM NEW268150109$155.7M4,209,5940.7%
Revolution Medicines Inc(RVMD)COM76155X100$151.4M1,556,5780.6%
Natera Inc(NTRA)COM632307104$150.9M754,7290.6%
Fabrinet(FN)SHSG3323L100$148.6M284,8740.6%
Abivax SA(ABVX)SPONSORED ADS00370M103$147.3M1,322,9380.6%
Servicenow Inc(NOW)COM81762P102$145.8M1,394,1870.6%
Technipfmc PLC(FTI)COMG87110105$140.6M2,033,7550.6%
Royal Caribbean Group(RCL)COMV7780T103$139.2M505,7650.6%
Hilton Worldwide Hldgs Inc(HLT)COM43300A203$139.1M457,4250.6%
Visa Inc(V)COM CL A92826C839$138.0M456,5480.6%
Cencora Inc(COR)COM03073E105$137.3M436,9090.6%
ITT Inc(ITT)COM45073V108$134.0M703,3090.6%
Celsius Hldgs Inc(CELH)COM NEW15118V207$133.7M3,768,9110.6%
Nextpower Inc(NXT)CLASS A COM65290E101$133.5M1,107,3460.6%
Cheniere Energy Inc(LNG)COM NEW16411R208$130.3M459,0440.5%
Amer Sports Inc(AS)COM SHSG0260P102$129.6M3,937,5210.5%
Regal Rexnord Corporation(RRX)COM758750103$127.7M681,7170.5%
Msci Inc(MSCI)COM55354G100$126.0M233,7640.5%
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