Fund Holdings — WESTFIELD CAPITAL MANAGEMENT CO LP

Total Portfolio Value:
$23.83B
Total Bought:
$4.87B
Total Sold:
$4.82B
Net Transaction:
+$53.62M
Notable People:
William Albert Muggia, Richard Dailyong Lee
Securities
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SharesValue
Q4 2025
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Q1 2026
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Change
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Q4 2025
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Q1 2026
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Weight (%)
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Change
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NVIDIA Corporation(NVDA)5,951,0496,317,039+365,990$1.11B$1.10B4.62%-$8.18M
Ascendis Pharma A/SADR(ASND)5,185,6964,813,440-372,256$1.11B$1.10B4.62%-$4.82M
Comfort Systems USA, Inc.(FIX)668,835620,915-47,920$624.22M$856.24M3.59%+$232.02M
Apple Inc.(AAPL)3,274,3183,133,113-141,205$890.16M$795.15M3.34%-$95.00M
FTAI Aviation Ltd.SHS(FTAI)2,350,6252,848,227+497,602$462.72M$697.82M2.93%+$235.10M
Microsoft Corporation(MSFT)1,621,2191,649,513+28,294$784.05M$610.60M2.56%-$173.45M
Alphabet Inc.CL A(GOOG)2,178,4782,026,744-151,734$681.86M$582.81M2.45%-$99.05M
Howmet Aerospace Inc.(HWM)2,219,1252,289,697+70,572$454.96M$527.68M2.21%+$72.72M
Vertiv Holdings CoCL A(VRT)2,277,7161,921,696-356,020$369.01M$481.54M2.02%+$112.53M
Amazon.com, Inc.(AMZN)2,330,7702,279,654-51,116$537.99M$474.78M1.99%-$63.20M
Axon Enterprise, Inc.(AXON)831,1771,064,134+232,957$472.05M$451.93M1.90%-$20.12M
Broadcom Inc.(AVGO)1,112,3181,236,925+124,607$384.97M$382.84M1.61%-$2.13M
Eli Lilly and Company(LLY)277,549364,579+87,030$298.28M$335.33M1.41%+$37.05M
Tapestry, Inc.(TPR)2,098,1042,198,862+100,758$268.07M$310.28M1.30%+$42.21M
Meta Platforms, Inc.CL A(META)655,283526,822-128,461$432.55M$301.41M1.26%-$131.14M
LPL Financial Holdings Inc.(LPLA)625,562881,506+255,944$223.43M$265.18M1.11%+$41.75M
MKS Inc.(MKSI)839,7731,046,763+206,990$134.20M$240.56M1.01%+$106.36M
Insmed Incorporated(INSM)432,5211,468,459+1,035,938$75.28M$240.12M1.01%+$164.85M
Vaxcyte, Inc.(PCVX)3,539,7173,646,138+106,421$163.32M$211.88M0.89%+$48.55M
Rocket Lab Corporation(RKLB)2,592,4433,172,611+580,168$180.85M$203.75M0.85%+$22.90M
Netflix, Inc.(NFLX)1,597,5471,969,994+372,447$149.79M$189.41M0.79%+$39.63M
APi Group Corporation(APG)3,453,3554,634,929+1,181,574$132.13M$187.81M0.79%+$55.68M
Quanta Svcs Inc273,528331,816+58,288$115.45M$182.17M0.76%+$66.73M
GE Vernova Inc.(GEV)177,934199,306+21,372$116.29M$173.97M0.73%+$57.68M
Ares Management CorporationCL A(ARES)1,151,2001,572,787+421,587$186.07M$171.59M0.72%-$14.48M
Rhythm Pharmaceuticals, Inc.(RYTM)1,267,1581,929,123+661,965$135.64M$167.78M0.70%+$32.14M
Taiwan Semiconductor Manufacturing Company LimitedADS(TSM)446,195493,504+47,309$135.59M$166.78M0.70%+$31.19M
Marvell Technology, Inc.(MRVL)1,947,8071,673,381-274,426$165.52M$165.75M0.70%+$223.7K
Bloom Energy CorpCL A1,145,2961,191,572+46,276$99.51M$161.45M0.68%+$61.93M
Samsara Inc.CL A(IOT)3,953,9705,072,821+1,118,851$140.17M$160.76M0.67%+$20.59M
Ametek Inc900,216745,832-154,384$184.82M$159.88M0.67%-$24.95M
Permian Resources CorporationCL A(PR)5,951,1867,481,457+1,530,271$83.50M$159.50M0.67%+$76.01M
Dynatrace, Inc.(DT)3,356,7084,209,594+852,886$145.48M$155.67M0.65%+$10.19M
Revolution Medicines, Inc.(RVMD)2,845,0131,556,578-1,288,435$226.61M$151.38M0.64%-$75.23M
Natera, Inc.(NTRA)714,692754,729+40,037$163.73M$150.94M0.63%-$12.79M
FabrinetSHS(FN)190,170284,874+94,704$86.58M$148.57M0.62%+$61.99M
ABIVAX Société AnonymeADS(ABVX)1,009,9661,322,938+312,972$136.20M$147.31M0.62%+$11.11M
ServiceNow, Inc.(NOW)1,476,8031,394,187-82,616$226.23M$145.76M0.61%-$80.47M
TechnipFMC plc(FTI)1,952,4272,033,755+81,328$87.00M$140.59M0.59%+$53.59M
Royal Caribbean Group
COM
448,653505,765+57,112$125.14M$139.18M0.58%+$14.04M
Hilton Worldwide Holdings Inc.(HLT)357,721457,425+99,704$102.76M$139.09M0.58%+$36.34M
Visa Inc.CL A(V)603,926456,548-147,378$211.80M$137.99M0.58%-$73.82M
Cencora Inc319,215436,909+117,694$107.81M$137.25M0.58%+$29.44M
ITT Inc.(ITT)587,446703,309+115,863$101.93M$134.00M0.56%+$32.07M
Celsius Holdings, Inc.(CELH)1,544,2153,768,911+2,224,696$70.63M$133.72M0.56%+$63.09M
Nextpower IncCL A1,090,3001,107,346+17,046$94.98M$133.49M0.56%+$38.51M
Cheniere Energy, Inc.(LNG)0459,044+459,044$0$130.26M0.55%+$130.26M
Amer Sports, Inc.(AS)03,937,521+3,937,521$0$129.62M0.54%+$129.62M
Regal Rexnord Corporation(RRX)893,100681,717-211,383$125.32M$127.66M0.54%+$2.34M
MSCI Inc.(MSCI)207,792233,764+25,972$119.22M$126.00M0.53%+$6.78M
Guardant Health, Inc.(GH)539,1901,362,539+823,349$55.07M$125.86M0.53%+$70.78M
Live Nation Entertainment, Inc.(LYV)775,234810,710+35,476$110.47M$123.64M0.52%+$13.17M
Tesla, Inc.(TSLA)461,675316,102-145,573$207.62M$117.51M0.49%-$90.11M
Globe Life Inc608,813842,423+233,610$85.15M$117.24M0.49%+$32.09M
Dutch Bros Inc.CL A(BROS)1,779,6162,313,357+533,741$108.95M$117.19M0.49%+$8.25M
Cloudflare, Inc.CL A(NET)519,475541,566+22,091$102.41M$111.75M0.47%+$9.33M
Roku, Inc.CL A(ROKU)1,112,4781,178,219+65,741$120.69M$111.48M0.47%-$9.21M
XPO, Inc.(XPO)724,214571,992-152,222$98.43M$111.28M0.47%+$12.85M
Fifth Third Bancorp(FITB)3,746,9262,385,422-1,361,504$175.39M$110.83M0.46%-$64.57M
Everpure, Inc.CL A(P)1,520,2191,874,763+354,544$101.87M$110.69M0.46%+$8.82M
Kratos Defense & Security Solutions, Inc.(KTOS)1,245,5871,563,146+317,559$94.55M$110.22M0.46%+$15.66M
American Intl Group Inc01,458,711+1,458,711$0$109.77M0.46%+$109.77M
Snowflake Inc.(SNOW)649,105718,810+69,705$142.39M$108.41M0.45%-$33.98M
Primoris Services Corporation(PRIM)952,196743,269-208,927$118.21M$106.32M0.45%-$11.89M
Jones Lang LaSalle Incorporated(JLL)0347,779+347,779$0$105.84M0.44%+$105.84M
Legence Corp.CL A(LGN)1,613,3261,861,653+248,327$69.44M$105.11M0.44%+$35.67M
Legend Biotech CorporationADS(LEGN)6,164,6775,763,475-401,202$134.02M$104.26M0.44%-$29.76M
KeyCorp(KEY)4,040,2975,193,334+1,153,037$83.39M$104.13M0.44%+$20.73M
Ross Stores, Inc.(ROST)0471,916+471,916$0$102.23M0.43%+$102.23M
Palomar Holdings, Inc.(PLMR)840,226854,116+13,890$113.23M$102.07M0.43%-$11.16M
Palo Alto Networks, Inc.(PANW)448,460636,483+188,023$82.61M$102.04M0.43%+$19.43M
Diamondback Energy, Inc.(FANG)354,655503,474+148,819$53.32M$99.58M0.42%+$46.27M
Palantir Technologies Inc.CL A(PLTR)154,585674,557+519,972$27.48M$98.67M0.41%+$71.20M
Semtech Corporation(SMTC)2,448,6121,280,594-1,168,018$180.44M$98.46M0.41%-$81.97M
Woodward, Inc.(WWD)0272,185+272,185$0$97.42M0.41%+$97.42M
Arista Networks, Inc.(ANET)0780,402+780,402$0$95.82M0.40%+$95.82M
AutoZone, Inc.(AZO)51,12228,363-22,759$173.38M$95.80M0.40%-$77.58M
SharkNinja, Inc.(SN)840,060904,541+64,481$94.00M$95.79M0.40%+$1.79M
Coherent Corp.(COHR)665,123396,644-268,479$122.76M$94.48M0.40%-$28.28M
Astera Labs, Inc.(ALAB)195,294860,113+664,819$32.49M$94.27M0.40%+$61.78M
Braze, Inc.CL A(BRZE)2,187,2753,973,906+1,786,631$75.00M$93.82M0.39%+$18.82M
Jabil Inc.(JBL)328,412349,209+20,797$74.88M$92.76M0.39%+$17.88M
Lincoln Electric Holdings, Inc.(LECO)337,725358,165+20,440$80.93M$89.21M0.37%+$8.28M
Imax Corp2,346,4862,338,776-7,710$86.73M$88.90M0.37%+$2.17M
GeneDx Holdings Corp.CL A(WGS)1,018,2611,369,108+350,847$132.44M$87.92M0.37%-$44.51M
Garmin Ltd.SHS(GRMN)335,744376,362+40,618$68.11M$87.32M0.37%+$19.21M
Credo Technology Group Holdi
ORDINARY SHARES
470,687926,219+455,532$67.73M$86.94M0.36%+$19.22M
F5, Inc.(FFIV)281,299298,542+17,243$71.80M$86.38M0.36%+$14.57M
East West Bancorp, Inc.(EWBC)874,152805,956-68,196$98.25M$86.04M0.36%-$12.20M
Life Time Group Holdings, Inc.(LTH)03,185,515+3,185,515$0$85.82M0.36%+$85.82M
Birkenstock Holding plc(BIRK)1,954,8012,338,779+383,978$79.95M$83.80M0.35%+$3.85M
O'Reilly Automotive, Inc.(ORLY)952,702887,999-64,703$86.90M$81.97M0.34%-$4.92M
Morgan Stanley(MS)0496,558+496,558$0$81.72M0.34%+$81.72M
Xenon Pharmaceuticals Inc.(XENE)1,226,7711,401,483+174,712$54.98M$81.50M0.34%+$26.51M
Alnylam Pharmaceuticals, Inc.(ALNY)93,444245,539+152,095$37.16M$81.24M0.34%+$44.08M
FirstCash Holdings, Inc.(FCFS)537,734431,993-105,741$85.70M$81.21M0.34%-$4.49M
IDEX Corporation(IEX)401,998426,019+24,021$71.53M$80.75M0.34%+$9.22M
MasTec, Inc.(MTZ)0249,980+249,980$0$80.43M0.34%+$80.43M
Houlihan Lokey, Inc.CL A(HLI)520,002543,611+23,609$90.58M$78.07M0.33%-$12.51M
Plexus Corp.(PLXS)5,200384,493+379,293$764.4K$77.88M0.33%+$77.11M
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WESTFIELD CAPITAL MANAGEMENT CO LP — 13F Holdings — Q1 2026 | TickerTrail