Westfield Capital Management Co Lp Top Holdings and 13F Report (2025) About Westfield Capital Management Co LpInvestment ActivityWestfield Capital Management Co Lp has $22.97 billion in total holdings as of December 31, 2024.Westfield Capital Management Co Lp owns shares of 239 different stocks, but just 93 companies or ETFs make up 80% of its holdings.Approximately 15.93% of the portfolio was purchased this quarter.About 16.58% of the portfolio was sold this quarter.This quarter, Westfield Capital Management Co Lp has purchased 247 new stocks and bought additional shares in 100 stocks.Westfield Capital Management Co Lp sold shares of 95 stocks and completely divested from 39 stocks this quarter.Largest Holdings NVIDIA $993,724,126Apple $915,292,893Microsoft $789,389,723Ascendis Pharma A/S $761,072,627Amazon.com $755,194,779 Largest New Holdings this Quarter BLOCK INC $120,374,689 HoldingAPPLOVIN CORP $112,663,178 HoldingLAM RESEARCH CORP $90,783,722 HoldingNatera $84,816,232 HoldingTwilio $77,993,446 Holding Largest Purchases this Quarter Eli Lilly and Company 193,642 shares (about $149.49M)Tapestry 1,905,851 shares (about $124.51M)Glaukos 804,614 shares (about $120.64M)BLOCK INC 1,416,339 shares (about $120.37M)FTAI Aviation 828,673 shares (about $119.36M) Largest Sales this Quarter Axon Enterprise 460,458 shares (about $273.66M)SAP 647,291 shares (about $159.37M)American International Group 1,546,013 shares (about $112.55M)Masimo 625,198 shares (about $103.35M)AbbVie 576,393 shares (about $102.43M) Sector Allocation Over TimeMap of 500 Largest Holdings ofWestfield Capital Management Co Lp Selling Neutral Buying Latest 13F Holdings and Changes Since Previous Quarterly FilingIssuer NameHoldings ValueApproximate Purchase/SaleChange in SharesShares Held% of PortfolioSectorNVDANVIDIA$993,724,126$23,894,354 ▼-2.3%7,399,8374.3%Computer and TechnologyAAPLApple$915,292,893$20,603,306 ▼-2.2%3,655,0314.0%Computer and TechnologyMSFTMicrosoft$789,389,723$17,525,967 ▼-2.2%1,872,8113.4%Computer and TechnologyASNDAscendis Pharma A/S$761,072,627$54,307,095 ▲7.7%5,528,2393.3%MedicalAMZNAmazon.com$755,194,779$3,880,570 ▼-0.5%3,442,2483.3%Retail/WholesaleGOOGLAlphabet$657,895,494$63,812,652 ▲10.7%3,475,4122.9%Computer and TechnologyMETAMeta Platforms$527,520,484$6,302,429 ▼-1.2%900,9592.3%Computer and TechnologyTDGTransDigm Group$459,031,330$12,473,829 ▼-2.6%362,2182.0%AerospaceAXONAxon Enterprise$424,861,647$273,659,469 ▼-39.2%714,8701.8%AerospaceVRTVertiv$422,630,284$12,320,321 ▲3.0%3,720,0101.8%Computer and TechnologyFIXComfort Systems USA$375,346,956$75,036,145 ▲25.0%885,1271.6%ConstructionFTAIFTAI Aviation$358,472,924$119,362,059 ▲49.9%2,488,7041.6%AerospaceNOWServiceNow$333,982,996$28,448,287 ▼-7.8%315,0431.5%Computer and TechnologyAVGOBroadcom$314,137,832$41,274,007 ▲15.1%1,354,9771.4%Computer and TechnologyVVisa$284,326,106$927,894 ▲0.3%899,6521.2%Business ServicesTSLATesla$266,577,643$55,965,365 ▲26.6%660,1071.2%Auto/Tires/TrucksTPRTapestry$235,509,277$124,509,237 ▲112.2%3,604,9181.0%Retail/WholesaleLPLALPL Financial$230,489,489$1,615,571 ▼-0.7%705,9191.0%FinancePCVXVaxcyte$210,114,892$67,688,806 ▲47.5%2,566,7590.9%MedicalGE VERNOVA INC$201,239,415$65,335,708 ▲48.1%611,8000.9%COMCRMSalesforce$199,629,403$44,288,351 ▲28.5%597,1030.9%Computer and TechnologyLEGNLegend Biotech$185,923,663$21,970,715 ▲13.4%5,713,6960.8%MedicalDXCMDexCom$182,417,423$38,609,390 ▼-17.5%2,345,6010.8%MedicalPGRProgressive$179,268,157$19,233,506 ▼-9.7%748,1660.8%FinanceNFLXNetflix$178,572,743$101,503,718 ▼-36.2%200,3460.8%Consumer DiscretionaryRRXRegal Rexnord$176,659,031$24,705,995 ▲16.3%1,138,7810.8%Industrial ProductsLLYEli Lilly and Company$169,834,286$149,491,351 ▲734.9%219,9930.7%MedicalARESAres Management$168,845,869$6,851,768 ▼-3.9%953,7700.7%FinanceOPCHOption Care Health$168,553,290$17,935,363 ▲11.9%7,265,2280.7%MedicalUNHUnitedHealth Group$166,460,108$71,292,785 ▲74.9%329,0640.7%MedicalMNDYmonday.com$164,313,469$22,960,329 ▲16.2%697,9000.7%Computer and TechnologyCMGChipotle Mexican Grill$161,333,822$1,714,450 ▼-1.1%2,675,5190.7%Retail/WholesalePODDInsulet$161,287,902$35,786,409 ▼-18.2%617,7960.7%MedicalFOURShift4 Payments$161,019,755$10,011,034 ▲6.6%1,551,5490.7%Business ServicesCWSTCasella Waste Systems$160,863,260$60,292,548 ▲60.0%1,520,3030.7%Business ServicesKDKyndryl$159,499,045$46,734,808 ▲41.4%4,609,7990.7%Business ServicesTSMTaiwan Semiconductor Manufacturing$158,720,044$25,786,285 ▼-14.0%803,6860.7%Computer and TechnologyIOTSamsara$157,440,235$4,233,343 ▲2.8%3,603,5760.7%Computer and TechnologyDKNGDraftKings$157,095,856$19,529,293 ▲14.2%4,223,0070.7%Consumer DiscretionaryTEAMAtlassian$155,222,468$67,640,438 ▲77.2%637,7780.7%Computer and TechnologySAIASaia$154,849,762$16,498,337 ▲11.9%339,7840.7%TransportationDTDynatrace$154,821,464$7,871,456 ▲5.4%2,848,6010.7%Computer and TechnologyPALANTIR TECHNOLOGIES INC$144,375,883$76,388,886 ▼-34.6%1,908,9760.6%CL ALNTHLantheus$139,118,620$3,276,741 ▲2.4%1,555,0930.6%MedicalORCLOracle$138,568,680$40,444,034 ▲41.2%831,5450.6%Computer and TechnologyCOSTCostco Wholesale$136,079,288$639,558 ▲0.5%148,5140.6%Retail/WholesaleFLYWFlywire$134,360,827$5,961,902 ▲4.6%6,516,0440.6%Computer and TechnologyPCORProcore Technologies$131,363,979$58,965,489 ▲81.4%1,753,1560.6%Computer and TechnologyMTSIMACOM Technology Solutions$128,699,144$28,563,060 ▼-18.2%990,6790.6%Computer and TechnologyMASIMasimo$127,092,256$103,345,253 ▼-44.8%768,8580.6%MedicalOWLBlue Owl Capital$126,824,545$29,861,490 ▼-19.1%5,452,4740.6%FinanceICLRICON Public$126,454,945$2,359,028 ▲1.9%602,9990.6%MedicalTXRHTexas Roadhouse$125,063,972$24,480,201 ▲24.3%693,1440.5%Retail/WholesaleGKOSGlaukos$121,024,221$120,643,823 ▲31,715.2%807,1510.5%MedicalSNSharkNinja$120,600,359$17,716,313 ▲17.2%1,238,7050.5%Retail/WholesaleBLOCK INC$120,374,689$120,374,689 ▲New Holding1,416,3390.5%CL ACHDNChurchill Downs$119,412,670$17,446,734 ▲17.1%894,2090.5%Consumer DiscretionaryPTCPTC$116,693,104$2,850,169 ▼-2.4%634,6500.5%Computer and TechnologyHUBSHubSpot$115,411,074$7,053,414 ▼-5.8%165,6370.5%Computer and TechnologyAPPLOVIN CORP$112,663,178$112,663,178 ▲New Holding347,9080.5%COM CL AFLEXFlex$111,363,174$627,331 ▼-0.6%2,900,8380.5%Computer and TechnologyGPNGlobal Payments$110,812,012$2,658,624 ▼-2.3%988,8630.5%Business ServicesCSXCSX$108,726,687$107,804,088 ▲11,684.8%3,369,2810.5%TransportationPSTGPure Storage$106,499,075$45,375,074 ▲74.2%1,733,6660.5%Computer and TechnologyITTITT$106,149,696$10,488,821 ▲11.0%742,9290.5%Multi-Sector ConglomeratesITCIIntra-Cellular Therapies$101,788,163$4,958,749 ▲5.1%1,218,7280.4%MedicalANFAbercrombie & Fitch$99,713,380$21,668,068 ▲27.8%667,1130.4%Retail/WholesaleTRUTransUnion$98,402,394$16,352,839 ▲19.9%1,061,4000.4%Business ServicesAJGArthur J. Gallagher & Co.$98,278,000$33,212,453 ▲51.0%346,2320.4%FinanceUNPUnion Pacific$97,379,729$32,571,649 ▼-25.1%427,0290.4%TransportationBACBank of America$96,427,392$16,277,233 ▲20.3%2,194,0250.4%FinanceTGTTarget$92,470,350$106,792 ▲0.1%684,0530.4%Retail/WholesaleWSCWillScot Mobile Mini$92,140,801$4,138,401 ▲4.7%2,754,5830.4%FinanceLAM RESEARCH CORP$90,783,722$90,783,722 ▲New Holding1,256,8700.4%COM NEWFNFabrinet$90,463,469$57,231,026 ▲172.2%411,4220.4%Computer and TechnologyMSCIMSCI$89,365,767$3,001,859 ▼-3.2%148,9400.4%FinanceBIOBio-Rad Laboratories$86,925,389$3,888,244 ▲4.7%264,6050.4%MedicalMHOM/I Homes$85,733,339$61,445,501 ▼-41.7%644,8540.4%ConstructionFICOFair Isaac$84,901,056$34,729,716 ▼-29.0%42,6440.4%Computer and TechnologyNTRANatera$84,816,232$84,816,232 ▲New Holding535,7940.4%MedicalTTDTrade Desk$84,674,651$1,885,770 ▼-2.2%720,4510.4%Computer and TechnologyROKURoku$83,200,064$30,954,656 ▼-27.1%1,119,1830.4%Consumer DiscretionaryDDOGDatadog$80,934,006$4,486,315 ▼-5.3%566,4080.4%Computer and TechnologyAXTAAxalta Coating Systems$80,393,662$8,641,508 ▲12.0%2,349,3180.3%Basic MaterialsJBHTJ.B. Hunt Transport Services$78,783,650$2,063,962 ▼-2.6%461,6410.3%TransportationBFAMBright Horizons Family Solutions$78,382,589$30,816 ▼0.0%707,1050.3%Business ServicesTWLOTwilio$77,993,446$77,993,446 ▲New Holding721,6270.3%Computer and TechnologyTWTradeweb Markets$75,484,283$2,330,114 ▼-3.0%576,5680.3%FinanceSPGIS&P Global$74,940,425$11,161,827 ▲17.5%150,4740.3%Business ServicesAMEAMETEK$74,151,550$3,063,698 ▼-4.0%411,3590.3%Computer and TechnologyIEXIDEX$74,142,238$398,070 ▼-0.5%354,2560.3%Industrial ProductsAVYAvery Dennison$73,926,455$19,236,028 ▼-20.6%395,0540.3%Industrial ProductsRMBSRambus$73,450,979$25,758,784 ▲54.0%1,389,5380.3%Computer and TechnologyPERMIAN RESOURCES CORP$73,181,014$439,151 ▼-0.6%5,089,0830.3%CLASS A COMSSentinelOne$73,142,229$346,409 ▼-0.5%3,294,6950.3%Computer and TechnologyKMPRKemper$72,744,757$17,062,390 ▲30.6%1,094,8940.3%FinanceCOINCoinbase Global$72,083,060$9,426,472 ▼-11.6%290,3060.3%FinanceVMCVulcan Materials$72,075,877$1,246,537 ▼-1.7%280,2000.3%ConstructionFFIVF5$71,961,913$41,607,724 ▼-36.6%286,1650.3%Computer and TechnologyMLTXMoonLake Immunotherapeutics$71,024,169$7,811,733 ▲12.4%1,311,6190.3%MedicalShowing largest 100 holdings. 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