Listed

WESTFIELD CAPITAL MANAGEMENT CO LP

An institutional investment manager in BOSTON, MA. Its Form 13F for the quarter ended Jun 30, 2026, filed Aug 12, 2026. SEC CIK 1177719.

Share

Holdings: 278 positions

The filing on sec.gov

As filed, largest first. Reported value is what the manager stated for each position at the quarter end, in US dollars; it is filing data, not a price. Weight is the position's share of the total reported value. Changes compare with the 13F for the quarter ended 2026-03-31.

WESTFIELD CAPITAL MANAGEMENT CO LP, holdings
IssuerClassCUSIPReported value$mWeightSharesPut or callChange on the quarter before
Nvidia CorporationNVDACOM67066G1041,6175.3%8,079,926Added+1,762,887
Alphabet IncGOOGLCAP STK CL A02079K3051,3404.4%3,749,074Added+1,722,330
Ascendis Pharma A/SORD SHSK085881031,2804.2%4,798,267New+4,798,267
Axon Enterprise IncAXONCOM05464C1018362.7%1,491,490Added+427,356
Ftai Aviation LtdSHSG3730V1057952.6%2,937,228Added+89,001
Apple IncAAPLCOM0378331007452.4%2,573,774Reduced−559,339
Comfort Sys USA IncFIXCOM1999081047042.3%355,433Reduced−265,482
Broadcom IncAVGOCOM11135F1015881.9%1,556,522Added+319,597
Microsoft CorpMSFTCOM5949181045281.7%1,414,294Reduced−235,219
Howmet Aerospace IncHWMCOM4432011085171.7%1,921,476Reduced−368,221
ELI Lilly & CoLLYCOM5324571085001.6%416,732Added+52,153
Snowflake IncSNOWCOM SHS8334451094421.4%1,736,498Added+1,017,688
MKS Inc.MKSICOM55306N1044131.3%928,617Reduced−118,146
Meta Platforms IncMETACL A30303M1023821.2%677,389Added+150,567
Vertiv Holdings CoVRTCOM CL A92537N1083531.2%1,054,361Reduced−867,335
GE Vernova IncGEVCOM36828A1012830.9%241,272Added+41,966
Micron Technology IncMUCOM5951121032630.9%228,203Added+127,769
Visa IncVCOM CL A92826C8392620.9%762,403Added+305,855
API Group CorpAPGCOM STK00187Y1002610.9%6,154,301Added+1,519,372
Tapestry IncTPRCOM8760301072480.8%1,696,569Reduced−502,293
Rhythm Pharmaceuticals IncRYTMCOM76243J1052450.8%2,208,595Added+279,472
Life Time Group Holdings IncLTHCOMMON STOCK53190C1022450.8%5,995,254Added+2,809,739
Taiwan Semiconductor ManufacTSMSPONSORED ADS8740391002440.8%510,999Added+17,495
Guardant Health IncGHCOM40131M1092440.8%1,624,459Added+261,920
Quanta SVCS IncPWRCOM74762E1022390.8%331,489Reduced−327
Servicenow IncNOWCOM81762P1022360.8%2,373,711Added+979,524
Advanced Micro Devices IncAMDCOM0079031072340.8%403,081Added+398,061
Palo Alto Networks IncPANWCOM6974351052250.7%658,331Added+21,848
Woodward IncWWDCOM9807451032240.7%526,505Added+254,320
Arista Networks IncANETCOM SHS0404132052240.7%1,317,096Added+536,694
LPL Finl Holdings IncLPLACOM50212V1002230.7%793,061Reduced−88,445
Rocket Lab CorpRKLBCOM7731211082150.7%2,114,005Reduced−1,058,606
Amer Sports IncCOM SHSG0260P1022150.7%6,344,923Added+2,407,402
Cloudflare IncNETCL A COM18915M1072050.7%835,502Added+293,936
Amazon Com IncAMZNCOM0231351062050.7%859,806Reduced−1,419,848
Garmin LtdSHSH2906T1092050.7%861,057Added+484,695
Regal Rexnord CorporationRRXCOM7587501032040.7%856,976Added+175,259
Natera IncNTRACOM6323071041970.6%726,628Reduced−28,101
Morgan StanleyMSCOM NEW6174464481970.6%940,560Added+444,002
Carpenter Technology CorpCRSCOM1442851031940.6%314,082New+314,082
Samsara IncIOTCOM CL A79589L1061890.6%5,836,459Added+763,638
Dynatrace IncDTCOM NEW2681501091870.6%4,249,229Added+39,635
Caterpillar IncCATCOM1491231011860.6%174,620Added+142,295
Semtech CorpSMTCCOM8168501011830.6%1,133,268Reduced−147,326
Ametek IncAMECOM0311001001750.6%723,798Reduced−22,034
Abivax SAABVXSPONSORED ADS00370M1031750.6%1,309,825Reduced−13,113
Insmed IncINSMCOM PAR $.014576693071740.6%1,629,561Added+161,102
ITT IncITTCOM45073V1081640.5%830,382Added+127,073
Gilead Sciences IncGILDCOM3755581031630.5%1,287,629Added+1,260,939
PTC Therapeutics IncPTCTCOM69366J2001600.5%1,956,156New+1,956,156
Dutch Bros IncBROSCL A26701L1001570.5%2,184,001Reduced−129,356
Celsius Holdings IncCELHCOM NEW15118V2071560.5%5,324,481Added+1,555,570
Mastec IncMTZCOM5763231091560.5%374,457Added+124,477
Sharkninja IncCOM SHSG8068L1081540.5%1,008,349Added+103,808
CSX CorpCSXCOM1264081031500.5%3,154,419Added+1,496,120
Firstcash Holdings IncFCFSCOM33768G1071500.5%693,085Added+261,092
KeycorpKEYCOM4932671081500.5%6,493,467Added+1,300,133
Microchip Technology Inc.MCHPCOM5950171041490.5%1,639,111Added+668,816
Applied Matls IncAMATCOM0382221051490.5%205,592Added+204,656
Marriott International Inc NewMARCL A5719032021480.5%398,962Added+245,743
Vaxcyte IncPCVXCOM92243G1081440.5%2,472,428Reduced−1,173,710
Globe Life IncGLCOM37959E1021380.4%770,990Reduced−71,433
Technipfmc plcCOMG871101051370.4%2,059,689Added+25,934
XPO IncXPOCOM9837931001290.4%629,011Added+57,019
Legend Biotech CorpLEGNSPONSORED ADS52490G1021280.4%4,430,063Reduced−1,333,412
Everpure IncPCL A74624M1021270.4%1,611,958Reduced−262,805
LAM Research CorpLRCXCOM NEW5128073061240.4%285,614New+285,614
Jones Lang Lasalle IncJLLCOM48020Q1071240.4%398,453Added+50,674
Astera Labs IncALABCOM04626A1031200.4%249,299Reduced−610,814
Rockwell Automation IncROKCOM7739031091170.4%237,136Added+30,859
Idex CorpIEXCOM45167R1041170.4%513,564Added+87,545
Coherent CorpCOHRCOM19247G1071150.4%291,040Reduced−105,604
Legence CorpLGNCL A52476L1091140.4%1,341,963Reduced−519,690
Lincoln Elec Holdings IncLECOCOM5339001061140.4%430,681Added+72,516
Asml HLDG NVN Y REGISTRY SHSN070592101140.4%57,430New+57,430
Planet Labs PBCPLCOM CL A72703X1061140.4%3,428,007Added+1,790,966
Onto Innovation IncONTOCOM6833441051130.4%299,383Reduced−27,577
Cencora IncCORCOM03073E1051130.4%400,058Reduced−36,851
Revolution Medicines IncRVMDCOM76155X1001130.4%600,821Reduced−955,757
Sandisk CorpSNDKCOM80004C2001110.4%49,024New+49,024
Affirm Holdings IncAFRMCOM CL A00827B1061100.4%1,352,200Added+271,564
Live Nation Entertainment inLYVCOM5380341091080.4%590,764Reduced−219,946
Enpro IncNPOCOM29355X1071080.4%286,554New+286,554
Permian Resources CorpPRCLASS A COM71424F1051060.3%5,756,888Reduced−1,724,569
Ares Management CorporationARESCL A COM STK03990B1011060.3%952,032Reduced−620,755
Imax CorpIMAXCOM45245E1091060.3%2,654,014Added+315,238
Guidewire Software IncGWRECOM40171V1001030.3%839,337Added+352,756
Nextpower IncNXTCLASS A COM65290E1011020.3%857,399Reduced−249,947
Jfrog LtdORD SHSM6191J1001010.3%1,114,561New+1,114,561
Synopsys IncSNPSCOM8716071071010.3%226,856Added+94,008
Roku IncROKUCOM CL A77543R10299.00.3%716,557Reduced−461,662
Plexus CorpPLXSCOM72913210096.80.3%321,808Reduced−62,685
Applied Indl Technologies inAITCOM03820C10596.60.3%285,691Reduced−3,510
Msci IncMSCICOM55354G10096.30.3%171,958Reduced−61,806
Robinhood MKTS IncHOODCOM CL A77070010295.80.3%955,544Added+322,160
Ross Stores IncROSTCOM77829610394.20.3%442,420Reduced−29,496
Adaptive Biotechnologies CorADPTCOM00650F10991.50.3%4,267,645Reduced−1,169,073
Xenon Pharmaceuticals IncXENECOM98420N10591.00.3%1,507,294Added+105,811
Oreilly Automotive IncORLYCOM67103H10785.90.3%933,255Added+45,256
Citigroup IncCCOM NEW17296742485.10.3%608,124Added+563,667
Packaging Corp AmerPKGCOM69515610984.90.3%356,291Added+52,520
Birkenstock Holding plcCOM SHSM2029K10484.60.3%1,967,122Reduced−371,657
Palomar Holdings IncPLMRCOM69753M10584.50.3%668,854Reduced−185,262
East West Bancorp IncEWBCCOM27579R10483.90.3%649,641Reduced−156,315
Red Rock Resorts IncRRRCL A75700L10882.10.3%1,261,559Added+33,401
Wintrust Finl CorpWTFCCOM97650W10881.00.3%504,042Added+48,820
Clean Harbors IncCLHCOM18449610780.20.3%268,348Added+7,256
Casella Waste Sys IncCWSTCL A14744810478.80.3%812,525Reduced−9,967
TTM Technologies IncTTMICOM87305R10977.80.3%416,052New+416,052
Targa Res CorpTRGPCOM87612G10177.00.3%287,128Reduced−17,869
Forgent Power Solutions IncFPSCOM SHS CL A34631F10276.60.3%1,370,928New+1,370,928
Alnylam Pharmaceuticals IncALNYCOM02043Q10776.00.2%252,383Added+6,844
Vita Coco Co IncCOCOCOM92846Q10775.30.2%1,137,802Reduced−14,131
Rubrik Inc.RBRKCL A78115410975.20.2%937,308New+937,308
Autozone IncAZOCOM05333210274.80.2%23,395Reduced−4,968
Doordash IncDASHCL A25809K10574.10.2%401,737Reduced−42,184
Wynn Resorts LtdWYNNCOM98313410773.90.2%761,352Added+21,339
Idexx Labs IncIDXXCOM45168D10473.70.2%139,925Added+7,065
Sprouts FMRS MKT IncSFMCOM85208M10273.30.2%866,638New+866,638
Praxis Precision Medicines IPRAXCOM NEW74006W20773.30.2%218,898Added+218,236
Salesforce IncCRMCOM79466L30273.20.2%467,006Added+195,043
Primoris SVCS CorpPRIMCOM74164F10373.10.2%737,493Reduced−5,776
Nuvalent IncCOM67070310772.30.2%585,583New+585,583
Dycom Inds IncDYCOM26747510171.80.2%141,978New+141,978
Stepstone Group IncSTEPCOM CL A85914M10771.50.2%1,729,424Added+551,453
Hunt J B Trans SVCS IncJBHTCOM44565810771.10.2%245,804Added+17,227
Vistra CorpVSTCOM92840M10270.70.2%445,739Reduced−49,136
Glaukos CorpGKOSCOM37732210267.60.2%483,411Added+1,192
Macom Tech Solutions Holdings IMTSICOM55405Y10066.90.2%175,952Added+43,495
Teradyne IncTERCOM88077010266.00.2%136,491New+136,491
Saia IncSAIACOM78709Y10564.70.2%153,571Reduced−2,029
NXP Semiconductors N VCOMN6596X10963.90.2%227,356Reduced−20,640
Sensata Technologies HLDG PLSHSG8060N10263.70.2%1,333,853New+1,333,853
Healthequity IncHQYCOM42226A10763.50.2%703,313Reduced−9,535
Brightspring Health SVCS IncBTSGCOM10950A10662.60.2%897,804New+897,804
Relay Therapeutics IncRLAYCOM75943R10262.60.2%3,343,496New+3,343,496
Houlihan Lokey IncHLICL A44159310062.20.2%463,415Reduced−80,196
Entegris IncENTGCOM29362U10462.00.2%344,956Reduced−26,730
Core Scientific Inc NewCORZCOM21874A10661.70.2%2,409,894Added+929,881
Radnet IncRDNTCOM75049110260.20.2%975,542Added+443,649
Oruka Therapeutics IncORKACOM68760410860.10.2%631,433Added+318,303
Credo Technology Group HoldiORDINARY SHARESG2545710559.00.2%216,976Reduced−709,243
Builders Firstsource IncBLDRCOM12008R10758.70.2%656,421New+656,421
Lattice Semiconductor CorpLSCCCOM51841510458.40.2%381,803Reduced−181,619
Descartes Sys Group IncDSGXCOM24990610857.80.2%835,437Added+33,535
Avient CorporationAVNTCOM05368V10657.30.2%1,549,939Reduced−19,529
Braze IncBRZECOM CL A10576N10256.80.2%2,617,532Reduced−1,356,374
FabrinetSHSG3323L10054.70.2%97,376Reduced−187,498
Cheniere Energy IncLNGCOM NEW16411R20854.60.2%228,475Reduced−230,569
Insulet CorpPODDCOM45784P10153.70.2%352,717Added+351,035
Roblox CorpRBLXCL A77104910353.60.2%985,802New+985,802
Argenx SEARGXSPONSORED ADR04016X10153.00.2%57,082New+57,082
Newamsterdam Pharma CompanyORDINARY SHARESN6250910952.10.2%1,536,472Reduced−666,441
Jabil IncJBLCOM46631310352.00.2%134,783Reduced−214,426
Talen Energy CorpTLNCOM87422Q10951.90.2%135,079Added+3,618
Happen IncHAPNCOM NEW52603A20851.90.2%2,500,134Added+382,591
Rambus Inc DelRMBSCOM75091710651.20.2%385,811Added+371,375
Flex LtdORDY2573F10250.90.2%314,008New+314,008
Spotify Technology S aSHSL8681T10250.60.2%110,179New+110,179
Madrigal Pharmaceuticals IncMDGLCOM55886810550.40.2%93,931Reduced−882
Analog Devices IncADICOM03265410550.20.2%126,445New+126,445
Mongodb IncMDBCL A60937P10650.10.2%149,255Reduced−15,626
Nasdaq IncNDAQCOM63110310850.10.2%635,713New+635,713
Hilton Worldwide Holdings IncHLTCOM43300A20349.50.2%149,936Reduced−307,489
Calix IncCALXCOM13100M50949.40.2%1,324,534Reduced−221,567
Seagate Technology HLDNGS PLORD SHSG7997R10349.00.2%50,734New+50,734
Keysight Technologies IncKEYSCOM49338L10347.20.2%134,908New+134,908
Corning IncGLWCOM21935010547.10.2%184,428New+184,428
Lumentum Holdings IncLITECOM55024U10946.20.2%53,807New+53,807
Dorman Prods IncDORMCOM25827810045.10.1%330,809Reduced−130,473
Coeur MNG IncCDECOM NEW19210850444.90.1%2,748,441Added+9,595
Celcuity IncCELCCOM15102K10043.70.1%417,816New+417,816
Target Hospitality CorpTHCOM87615L10742.80.1%2,103,813New+2,103,813
Indivior Pharmaceuticals IncINDVCOM45579U10942.70.1%1,041,191New+1,041,191
Marex Group plcORDG5S37H10142.00.1%688,665New+688,665
Pattern Group IncPTRNCOM SER A70339W10441.70.1%1,656,169Added+483,278
Penumbra IncPENCOM70975L10741.50.1%131,394New+131,394
Royal Caribbean GroupCOMV7780T10340.70.1%128,165Reduced−377,600
Procore Technologies IncPCORCOM74275K10840.20.1%989,417Reduced−11,836
Fifth Third BancorpFITBCOM31677310040.10.1%711,015Reduced−1,674,407
Applied Digital CorpAPLDCOM NEW03816920738.80.1%1,039,641Added+497,549
Impinj IncPICOM45320410938.80.1%270,646New+270,646
Freeport McMoran IncFCXCL B35671D85738.60.1%613,078Added+68,719
Toast IncTOSTCL A88878710838.20.1%1,373,221Reduced−417,652
Rigetti Computing IncRGTICOMMON STOCK76655K10337.70.1%1,951,807Added+56,494
Diamondback Energy IncFANGCOM25278X10937.40.1%212,709Reduced−290,765
Sitime CorpSITMCOM82982T10637.30.1%49,998New+49,998
Applied Optoelectronics IncAAOICOM03823U10237.00.1%249,553New+249,553
Krystal Biotech IncKRYSCOM50114710236.70.1%98,707New+98,707
Everus Constr GroupECGCOM30042610336.70.1%221,067New+221,067
SPX Technologies IncSPXCCOM78473E10336.20.1%147,481Reduced−1,795
Axsome Therapeutics Inc.AXSMCOM05464T10435.50.1%145,145New+145,145
Silicon Motion Technology CoSIMOSPONSORED ADR82706C10835.50.1%106,466New+106,466
Corpay IncCPAYCOM SHS21994810634.70.1%103,975Reduced−39,145
Irhythm Holdings IncIRTCCOM45005610634.40.1%288,924New+288,924
Terawulf IncWULFCOM88080T10433.00.1%1,336,673New+1,336,673
Kaiser Aluminium CorporationKALUCOM PAR $0.0148300770432.00.1%163,465New+163,465
D-Wave Quantum IncQBTSCOM26740W10931.50.1%1,313,161New+1,313,161
Dianthus Therapeutics IncDNTHCOM25282810830.70.1%314,914New+314,914
Kodiak Gas SVCS IncKGSCOM50012A10830.2<0.1%402,126New+402,126
Uranium Energy CorpUECCOM91689610329.9<0.1%2,800,745Added+1,232,973
Innodata IncINODCOM NEW45764220528.3<0.1%375,091New+375,091
Synaptics IncSYNACOM87157D10928.2<0.1%226,677New+226,677
Ryman Hospitality Pptys IncRHPCOM78377T10728.1<0.1%218,405New+218,405
Riot Platforms IncRIOTCOM76729210527.8<0.1%1,013,804Reduced−2,486,076
Fastenal CoFASTCOM31190010427.5<0.1%572,498Reduced−65,836
Miami International Holdings IncMIAXCOM59356Q10826.0<0.1%700,741New+700,741
Tesla IncTSLACOM88160R10121.2<0.1%50,411Reduced−265,691
Netflix Inc.NFLXCOM64110L10620.8<0.1%290,833Reduced−1,679,161
Alphabet IncGOOGLCAP STK CL C02079K10720.4<0.1%57,617Added+7,130
Mueller Inds IncMLICOM62475610215.5<0.1%125,791Reduced−268
Bank of Amer CorpBACCOM06050510413.7<0.1%240,187Reduced−826,698
Williams Cos IncWMBCOM96945710013.4<0.1%180,918Reduced−526
Cummins IncCMICOM23102110611.0<0.1%15,389Reduced−26
Coca Cola CoKOCOM19121610010.9<0.1%133,579Reduced−288
Sumitomo Mitsui Fin GRP IncSMFGSPONSORED ADR86562M20910.8<0.1%456,612Reduced−972
Ciena CorpCIENCOM NEW17177930910.3<0.1%20,950Reduced−10,800
Mitsubishi Ufj Financial GroMUFGSPONSORED ADS60682210410.2<0.1%514,757Reduced−1,297
Walmart IncWMTCOM93114210310.0<0.1%88,491Added+16,930
Johnson & JohnsonJNJCOM4781601049.1<0.1%35,772Reduced−140
Quantinuum IncQNTCL A COM74768A1047.9<0.1%96,396New+96,396
Trane Technologies plcSHSG8994E1037.8<0.1%15,820Reduced−21
Nextera Energy IncNEECOM65339F1017.6<0.1%86,920Reduced−331
TJX Cos Inc NewTJXCOM8725401097.4<0.1%48,579Reduced−42
Goldman Sachs Group IncGSCOM38141G1047.1<0.1%7,062Reduced−12
Thermo Fisher Scientific IncTMOCOM8835561027.1<0.1%14,214Added+740
Parker-Hannifin CorpPHCOM7010941047.0<0.1%7,115Reduced−51,374
Merck & Co IncMRKCOM58933Y1056.8<0.1%53,297Added+10,396
Banco Bilbao Vizcaya ArgentaBBVASPONSORED ADR05946K1016.7<0.1%269,104Added+414
First CTZNS Bancshares Inc DFCNCACL A31946M1036.6<0.1%3,185Unchanged
Amgen IncAMGNCOM0311621006.2<0.1%17,047Reduced−5
GE AerospaceGECOM NEW3696043015.7<0.1%15,191New+15,191
Williams Sonoma IncWSMCOM9699041015.5<0.1%23,587New+23,587
Rollins IncROLCOM7757111045.5<0.1%131,503Added+886
McKesson CorpMCKCOM58155Q1035.2<0.1%6,895Reduced−6
Heico Corp NewHEICL A4228062085.2<0.1%20,130Unchanged
Hershey CoHSYCOM4278661085.1<0.1%29,173Added+15
Virtu Finl IncVIRTCL A9282541015.1<0.1%85,582New+85,582
Bunge Global SACOM SHSH113561045.0<0.1%46,759New+46,759
Equinix IncEQIXCOM29444U7005.0<0.1%4,772New+4,772
Southern Copper CorpSCCOCOM84265V1054.2<0.1%24,268Added+144
Watsco IncWSOCOM9426222004.1<0.1%9,807Reduced−15
Fedex CorpFDXCOM31428X1064.0<0.1%12,837New+12,837
Marvell Technology IncMRVLCOM5738741043.9<0.1%13,193Reduced−1,660,188
Pfizer IncPFECOM7170811033.9<0.1%162,023Added+28,289
Dominion Energy IncDCOM25746U1093.6<0.1%53,050Reduced−212
Verisign IncVRSNCOM92343E1023.6<0.1%14,118New+14,118
Bloom Energy CorpBECOM CL A0937121073.2<0.1%10,570Reduced−1,181,002
Antero Midstream CorpAMCOM03676B1023.0<0.1%133,412New+133,412
Home Depot IncHDCOM4370761022.1<0.1%6,017Reduced−14,388
Danaher Corp DelDHRCOM2358511022.1<0.1%11,033Reduced−99,459
Vanguard Index FDSGROWTH ETF9229087362.0<0.1%23,166Added+20,723
Abbvie IncABBVCOM00287Y1092.0<0.1%7,854Reduced−2,765
Wingstop IncWINGCOM9741551032.0<0.1%11,260New+11,260
Ranpak Holdings CorpPACKCOM CL A75321W1031.9<0.1%260,098Reduced−147,230
Intuitive Surgical IncISRGCOM NEW46120E6021.8<0.1%4,572Added+536
Dexcom IncDXCMCOM2521311071.8<0.1%25,990Reduced−1,084
Karman Holdings IncKRMNCOMMON STOCK4859241041.7<0.1%34,800Reduced−929,505
DPC Holdings plcORDINARY SHARESG2R11M1081.5<0.1%30,000New+30,000
Boston Scientific CorpBSXCOM1011371071.5<0.1%34,378Added+28,413
Unitedhealth Group IncUNHCOM91324P1021.4<0.1%3,377Added+610
SPDR Series TrustST STR SP BIOT78464A8701.2<0.1%7,520New+7,520
Vertex Pharmaceuticals IncVRTXCOM92532F1001.1<0.1%2,189Added+1,325
SPDR Series TrustST STR SP REGBNK78464A6980.9<0.1%12,330New+12,330
Novo-Nordisk a SNVOADR6701002050.7<0.1%15,599Reduced−1,509
Waste Connections IncWCNCOM94106B1010.7<0.1%4,466Unchanged
Ishares TRRUS MD CP GR ETF4642874810.7<0.1%4,949Reduced−3,350
WabtecWABCOM9297401080.7<0.1%2,490Unchanged
EQT CorpEQTCOM26884L1090.6<0.1%10,640Unchanged
Ishares IncMSCI AUST ETF4642861030.5<0.1%16,850New+16,850
Ringcentral IncRNGCL A76680R2060.4<0.1%10,760New+10,760
Ishares IncMSCI BRAZIL ETF4642864000.4<0.1%12,090New+12,090
D R Horton IncDHICOM23331A1090.4<0.1%2,190New+2,190
Ionis Pharmaceuticals IncIONSCOM4622221000.3<0.1%4,233Added+731
Cameco CorpCCJCOM13321L1080.3<0.1%3,110Unchanged
Stag Industrial IncSTAGCOM85254J1020.2<0.1%6,467Unchanged
Sophia Genetics SAORDINARY SHARESH820271050.2<0.1%32,907New+32,907
Pulmonx CorpLUNGCOM7458481010.1<0.1%110,000Unchanged

Sold out: 41 positions

Held at the end of the quarter before and not reported this quarter.

WESTFIELD CAPITAL MANAGEMENT CO LP, positions sold out
IssuerClassCUSIPReported value$WeightSharesPut or callChange on the quarter before
American International Group IncAIGCOM NEW0268747840.00.0%0Sold out−1,458,711
Applovin CorpAPPCOM CL A03831W1080.00.0%0Sold out−1,260
Ascendis Pharma A/SSPONSORED ADR04351P1010.00.0%0Sold out−4,813,440
Avalo Therapeutics IncAVTXCOM NEW05338F3060.00.0%0Sold out−15,639
Bio-Techne CorpTECHCOM09073M1040.00.0%0Sold out−856,043
Cardinal Health IncCAHCOM14149Y1080.00.0%0Sold out−13,043
C H Robinson Worldwide inCHRWCOM NEW12541W2090.00.0%0Sold out−429,500
Core Natural Resources IncCNRCOM SHS2189371000.00.0%0Sold out−3,360
Expedia Group IncEXPECOM NEW30212P3030.00.0%0Sold out−16,692
F5 IncFFIVCOM3156161020.00.0%0Sold out−298,542
Fair Isaac CorpFICOCOM3032501040.00.0%0Sold out−39,934
Gartner IncITCOM3666511070.00.0%0Sold out−14,370
Genedx Holdings CorpWGSCOM CL A81663L2000.00.0%0Sold out−1,369,108
Genius Sports LimitedSHARES CL AG3934V1090.00.0%0Sold out−207,150
Hamilton Lane IncHLNECL A4074971060.00.0%0Sold out−364,174
Hubspot IncHUBSCOM4435731000.00.0%0Sold out−232,976
Immunovant IncIMVTCOM45258J1020.00.0%0Sold out−8,581
Installed BLDG Prods IncIBPCOM45780R1010.00.0%0Sold out−208,248
International Business MachsIBMCOM4592001010.00.0%0Sold out−3,320
Ionq IncIONQCOM46222L1080.00.0%0Sold out−1,373,788
Ishares TRS&P 500 GRWT ETF4642873090.00.0%0Sold out−6,487
Ishares TRS&P MC 400GR ETF4642876060.00.0%0Sold out−4,905
Ishares TRRUS 1000 GRW ETF4642876140.00.0%0Sold out−4,085
KKR & Co IncKKRCOM48251W1040.00.0%0Sold out−558,136
Kratos Defense & Sec SolutioKTOSCOM NEW50077B2070.00.0%0Sold out−1,563,146
Lowes Cos IncLOWCOM5486611070.00.0%0Sold out−300,962
Masimo CorpCOM5747951000.00.0%0Sold out−341,229
McDonalds CorpMCDCOM5801351010.00.0%0Sold out−18,034
Medtronic plcSHSG5960L1030.00.0%0Sold out−60,349
Monday Com LtdSHSM7S64H1060.00.0%0Sold out−13,370
Moodys CorpMCOCOM6153691050.00.0%0Sold out−123,603
M & T BK CorpMTBCOM55261F1040.00.0%0Sold out−29,839
Option Care Health IncOPCHCOM NEW68404L2010.00.0%0Sold out−1,182,814
Palantir Technologies IncPLTRCL A69608A1080.00.0%0Sold out−674,557
Pepsico IncPEPCOM7134481080.00.0%0Sold out−22,760
Raymond James Finl IncRJFCOM7547301090.00.0%0Sold out−40,095
Scholar Rock HLDG CorpSRRKCOM80706P1030.00.0%0Sold out−5,182
Topbuild CorCOM89055F1030.00.0%0Sold out−148,581
Transdigm Group IncTDGCOM8936411000.00.0%0Sold out−12,950
Wells Fargo & CoWFCCOM9497461010.00.0%0Sold out−87,713
Zscaler IncZSCOM98980G1020.00.0%0Sold out−427,919

Source: SEC EDGAR, Form 13F-HR, accession 0001177719-26-000021 (on sec.gov). Last ingested by Listed: Oct 22, 2026, 05:26 ET. Listed shows no prices and gives no investment advice.