Westfield Capital Management Company

Westfield Capital Management as of June 30, 2026

Portfolio Holdings for Westfield Capital Management

Westfield Capital Management holds 278 positions in its portfolio as reported in the June 2026 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
NVIDIA Corporation (NVDA) 5.3 $1.6B 8.1M 200.09
Alphabet Cap Stk Cl A (GOOGL) 4.4 $1.3B 3.7M 357.37
Ascendis Pharma A/s Ord Shs (ASND) 4.2 $1.3B 4.8M 266.72
Axon Enterprise (AXON) 2.7 $836M 1.5M 560.61
Ftai Aviation SHS (FTAI) 2.6 $795M 2.9M 270.53
Apple (AAPL) 2.4 $745M 2.6M 289.36
Comfort Systems USA (FIX) 2.3 $705M 355k 1981.95
Broadcom (AVGO) 1.9 $588M 1.6M 377.75
Microsoft Corporation (MSFT) 1.7 $528M 1.4M 373.02
Howmet Aerospace (HWM) 1.7 $517M 1.9M 268.86
Eli Lilly & Co. (LLY) 1.6 $500M 417k 1199.43
Snowflake Com Shs (SNOW) 1.4 $442M 1.7M 254.50
MKS Instruments (MKSI) 1.3 $413M 929k 444.80
Meta Platforms Cl A (META) 1.2 $382M 677k 563.29
Vertiv Holdings Com Cl A (VRT) 1.2 $353M 1.1M 334.82
Ge Vernova (GEV) 0.9 $284M 241k 1174.86
Micron Technology (MU) 0.9 $263M 228k 1154.29
Visa Com Cl A (V) 0.9 $262M 762k 343.09
Api Group Corp Com Stk (APG) 0.9 $261M 6.2M 42.35
Tapestry (TPR) 0.8 $248M 1.7M 146.38
Rhythm Pharmaceuticals (RYTM) 0.8 $245M 2.2M 111.03
Life Time Group Holdings Common Stock (LTH) 0.8 $245M 6.0M 40.84
Taiwan Semiconductor Manufac Sponsored Ads (TSM) 0.8 $244M 511k 477.57
Guardant Health (GH) 0.8 $244M 1.6M 150.03
Quanta Services (PWR) 0.8 $239M 332k 720.04
Servicenow (NOW) 0.8 $236M 2.4M 99.28
Advanced Micro Devices (AMD) 0.8 $234M 403k 580.91
Palo Alto Networks (PANW) 0.7 $225M 658k 341.02
Woodward Governor Company (WWD) 0.7 $224M 527k 425.44
Arista Networks Com Shs (ANET) 0.7 $224M 1.3M 169.88
Lpl Financial Holdings (LPLA) 0.7 $223M 793k 281.68
Rocket Lab Corp (RKLB) 0.7 $215M 2.1M 101.65
Amer Sports Com Shs (AS) 0.7 $215M 6.3M 33.84
Cloudflare Cl A Com (NET) 0.7 $205M 836k 245.28
Amazon (AMZN) 0.7 $205M 860k 238.34
Garmin SHS (GRMN) 0.7 $205M 861k 237.54
Regal-beloit Corporation (RRX) 0.7 $204M 857k 238.19
Natera (NTRA) 0.6 $197M 727k 271.45
Morgan Stanley Com New (MS) 0.6 $197M 941k 209.04
Carpenter Technology Corporation (CRS) 0.6 $194M 314k 616.84
Samsara Com Cl A (IOT) 0.6 $189M 5.8M 32.43
Dynatrace Com New (DT) 0.6 $187M 4.2M 43.91
Caterpillar (CAT) 0.6 $186M 175k 1064.90
Semtech Corporation (SMTC) 0.6 $183M 1.1M 161.85
Ametek (AME) 0.6 $175M 724k 241.94
Abivax Sa Sponsored Ads (ABVX) 0.6 $175M 1.3M 133.26
Insmed Com Par $.01 (INSM) 0.6 $174M 1.6M 106.62
Itt (ITT) 0.5 $164M 830k 197.76
Gilead Sciences (GILD) 0.5 $163M 1.3M 126.34
Ptc Therapeutics I (PTCT) 0.5 $160M 2.0M 81.57
Dutch Bros Cl A (BROS) 0.5 $157M 2.2M 71.81
Celsius Hldgs Com New (CELH) 0.5 $156M 5.3M 29.28
MasTec (MTZ) 0.5 $156M 375k 416.06
Sharkninja Com Shs (SN) 0.5 $154M 1.0M 152.27
CSX Corporation (CSX) 0.5 $150M 3.2M 47.53
Firstcash Holdings (FCFS) 0.5 $150M 693k 216.32
Key (KEY) 0.5 $150M 6.5M 23.05
Microchip Technology (MCHP) 0.5 $150M 1.6M 91.20
Applied Materials (AMAT) 0.5 $149M 206k 723.00
Marriott Intl Cl A (MAR) 0.5 $148M 399k 370.59
Vaxcyte (PCVX) 0.5 $144M 2.5M 58.13
Globe Life (GL) 0.4 $138M 771k 178.68
Technipfmc (FTI) 0.4 $137M 2.1M 66.30
Xpo Logistics Inc equity (XPO) 0.4 $129M 629k 205.29
Legend Biotech Corp Sponsored Ads (LEGN) 0.4 $128M 4.4M 28.88
Everpure Cl A (P) 0.4 $127M 1.6M 78.79
Lam Research Corp Com New (LRCX) 0.4 $124M 286k 433.33
Jones Lang LaSalle Incorporated (JLL) 0.4 $124M 399k 309.95
Astera Labs (ALAB) 0.4 $120M 249k 483.02
Rockwell Automation (ROK) 0.4 $117M 237k 495.08
IDEX Corporation (IEX) 0.4 $117M 514k 226.95
Coherent Corp (COHR) 0.4 $115M 291k 394.47
Legence Corp Cl A (LGN) 0.4 $114M 1.3M 85.23
Lincoln Electric Holdings (LECO) 0.4 $114M 431k 265.51
Asml Hldg Nv N Y Registry Shs (ASML) 0.4 $114M 57k 1989.44
Planet Labs Pbc Com Cl A (PL) 0.4 $114M 3.4M 33.13
Onto Innovation (ONTO) 0.4 $113M 299k 378.45
AmerisourceBergen (COR) 0.4 $113M 400k 282.98
Revolution Medicines (RVMD) 0.4 $113M 601k 187.28
Sandisk Corp (SNDK) 0.4 $112M 49k 2273.71
Affirm Hldgs Com Cl A (AFRM) 0.4 $110M 1.4M 81.55
Live Nation Entertainment (LYV) 0.4 $108M 591k 183.11
EnPro Industries (NPO) 0.4 $108M 287k 376.93
Permian Resources Corp Class A Com (PR) 0.3 $106M 5.8M 18.41
Ares Management Corporation Cl A Com Stk (ARES) 0.3 $106M 952k 111.31
Imax Corp Cad (IMAX) 0.3 $106M 2.7M 39.86
Guidewire Software (GWRE) 0.3 $103M 839k 123.05
Nextpower Class A Com (NXT) 0.3 $102M 857k 119.14
Jfrog Ord Shs (FROG) 0.3 $101M 1.1M 90.88
Synopsys (SNPS) 0.3 $101M 227k 446.07
Roku Com Cl A (ROKU) 0.3 $99M 717k 138.14
Plexus (PLXS) 0.3 $97M 322k 300.67
Applied Industrial Technologies (AIT) 0.3 $97M 286k 338.15
Msci (MSCI) 0.3 $96M 172k 560.04
Robinhood Mkts Com Cl A (HOOD) 0.3 $96M 956k 100.28
Ross Stores (ROST) 0.3 $94M 442k 212.85
Adaptive Biotechnologies Cor (ADPT) 0.3 $92M 4.3M 21.45
Xenon Pharmaceuticals (XENE) 0.3 $91M 1.5M 60.36
O'reilly Automotive (ORLY) 0.3 $86M 933k 92.09
Citigroup Com New (C) 0.3 $85M 608k 139.96
Packaging Corporation of America (PKG) 0.3 $85M 356k 238.28
Birkenstock Holding Com Shs (BIRK) 0.3 $85M 2.0M 43.03
Palomar Hldgs (PLMR) 0.3 $85M 669k 126.39
East West Ban (EWBC) 0.3 $84M 650k 129.09
Red Rock Resorts Cl A (RRR) 0.3 $82M 1.3M 65.06
Wintrust Financial Corporation (WTFC) 0.3 $81M 504k 160.72
Clean Harbors (CLH) 0.3 $80M 268k 298.75
Casella Waste Sys Cl A (CWST) 0.3 $79M 813k 96.97
TTM Technologies (TTMI) 0.3 $78M 416k 187.02
Targa Res Corp (TRGP) 0.3 $77M 287k 268.14
Forgent Power Solutions Com Shs Cl A (FPS) 0.3 $77M 1.4M 55.86
Alnylam Pharmaceuticals (ALNY) 0.2 $76M 252k 301.03
Vita Coco Co Inc/the (COCO) 0.2 $75M 1.1M 66.14
Rubrik Cl A (RBRK) 0.2 $75M 937k 80.28
AutoZone (AZO) 0.2 $75M 23k 3195.97
Doordash Cl A (DASH) 0.2 $74M 402k 184.53
Wynn Resorts (WYNN) 0.2 $74M 761k 97.09
IDEXX Laboratories (IDXX) 0.2 $74M 140k 526.44
Sprouts Fmrs Mkt (SFM) 0.2 $73M 867k 84.58
Praxis Precision Medicines I Com New (PRAX) 0.2 $73M 219k 334.79
salesforce (CRM) 0.2 $73M 467k 156.66
Primoris Services (PRIM) 0.2 $73M 738k 99.12
Nuvalent Inc-a (NUVL) 0.2 $72M 586k 123.50
Dycom Industries (DY) 0.2 $72M 142k 505.59
Stepstone Group Com Cl A (STEP) 0.2 $72M 1.7M 41.36
J.B. Hunt Transport Services (JBHT) 0.2 $71M 246k 289.43
Vistra Energy (VST) 0.2 $71M 446k 158.63
Glaukos (GKOS) 0.2 $68M 483k 139.76
M/a (MTSI) 0.2 $67M 176k 380.37
Teradyne (TER) 0.2 $66M 137k 483.84
Saia (SAIA) 0.2 $65M 154k 421.16
Nxp Semiconductors N V (NXPI) 0.2 $64M 227k 281.03
Sensata Technologies Hldg Pl SHS (ST) 0.2 $64M 1.3M 47.74
Healthequity (HQY) 0.2 $64M 703k 90.32
Brightspring Health Svcs (BTSG) 0.2 $63M 898k 69.74
Relay Therapeutics (RLAY) 0.2 $63M 3.3M 18.71
Houlihan Lokey Cl A (HLI) 0.2 $62M 463k 134.13
Entegris (ENTG) 0.2 $62M 345k 179.86
Core Scientific (CORZ) 0.2 $62M 2.4M 25.59
RadNet (RDNT) 0.2 $60M 976k 61.67
Oruka Therapeutics (ORKA) 0.2 $60M 631k 95.17
Credo Technology Group Holdi Ordinary Shares (CRDO) 0.2 $59M 217k 271.95
Builders FirstSource (BLDR) 0.2 $59M 656k 89.48
Lattice Semiconductor (LSCC) 0.2 $58M 382k 152.96
Descartes Sys Grp (DSGX) 0.2 $58M 835k 69.24
Avient Corp (AVNT) 0.2 $57M 1.5M 36.96
Braze Com Cl A (BRZE) 0.2 $57M 2.6M 21.69
Fabrinet SHS (FN) 0.2 $55M 97k 562.08
Cheniere Energy Com New (LNG) 0.2 $55M 229k 239.01
Insulet Corporation (PODD) 0.2 $54M 353k 152.25
Roblox Corp Cl A (RBLX) 0.2 $54M 986k 54.38
Argenx Se Sponsored Adr (ARGX) 0.2 $53M 57k 927.77
Newamsterdam Pharma Company Ordinary Shares (NAMS) 0.2 $52M 1.5M 33.89
Jabil Circuit (JBL) 0.2 $52M 135k 385.48
Talen Energy Corp (TLN) 0.2 $52M 135k 384.26
Happen Com New 0.2 $52M 2.5M 20.74
Rambus (RMBS) 0.2 $51M 386k 132.74
Flex Ord (FLEX) 0.2 $51M 314k 162.07
Spotify Technology S A SHS (SPOT) 0.2 $51M 110k 459.13
Madrigal Pharmaceuticals (MDGL) 0.2 $50M 94k 536.95
Analog Devices (ADI) 0.2 $50M 126k 397.17
Mongodb Cl A (MDB) 0.2 $50M 149k 335.90
Nasdaq Omx (NDAQ) 0.2 $50M 636k 78.82
Hilton Worldwide Holdings (HLT) 0.2 $50M 150k 330.46
Calix (CALX) 0.2 $49M 1.3M 37.32
Seagate Technology Hldngs Pl Ord Shs (STX) 0.2 $49M 51k 965.00
Keysight Technologies (KEYS) 0.2 $47M 135k 350.07
Corning Incorporated (GLW) 0.2 $47M 184k 255.43
Lumentum Hldgs (LITE) 0.2 $46M 54k 858.06
Dorman Products (DORM) 0.1 $45M 331k 136.45
Coeur Mng Com New (CDE) 0.1 $45M 2.7M 16.32
Celcuity (CELC) 0.1 $44M 418k 104.62
Target Hospitality Corp (TH) 0.1 $43M 2.1M 20.36
Indivior Pharmaceuticals (INDV) 0.1 $43M 1.0M 41.03
Marex Group Ord (MRX) 0.1 $42M 689k 60.95
Pattern Group Com Ser A (PTRN) 0.1 $42M 1.7M 25.19
Penumbra (PEN) 0.1 $42M 131k 315.75
Royal Caribbean Cruises (RCL) 0.1 $41M 128k 317.53
Procore Technologies (PCOR) 0.1 $40M 989k 40.62
Fifth Third Ban (FITB) 0.1 $40M 711k 56.37
Applied Digital Corp Com New (APLD) 0.1 $39M 1.0M 37.30
Impinj (PI) 0.1 $39M 271k 143.23
Freeport Mcmoran CL B (FCX) 0.1 $39M 613k 62.89
Toast Cl A (TOST) 0.1 $38M 1.4M 27.82
Rigetti Computing Common Stock (RGTI) 0.1 $38M 2.0M 19.32
Diamondback Energy (FANG) 0.1 $37M 213k 175.78
Sitime Corp (SITM) 0.1 $37M 50k 745.56
Applied Optoelectronics (AAOI) 0.1 $37M 250k 148.16
Krystal Biotech (KRYS) 0.1 $37M 99k 371.67
Everus Constr Group (ECG) 0.1 $37M 221k 165.95
Spx Corp (SPXC) 0.1 $36M 148k 245.17
Axsome Therapeutics (AXSM) 0.1 $36M 145k 244.77
Silicon Motion Technology Sponsored Adr (SIMO) 0.1 $36M 107k 333.33
Corpay Com Shs (CPAY) 0.1 $35M 104k 333.27
Irhythm Technologies (IRTC) 0.1 $34M 289k 118.95
Terawulf (WULF) 0.1 $33M 1.3M 24.70
Kaiser Aluminium Corporation Com Par $0.01 (KALU) 0.1 $32M 164k 195.63
D-wave Quantum (QBTS) 0.1 $32M 1.3M 23.99
Dianthus Therapeutics (DNTH) 0.1 $31M 315k 97.48
Kodiak Gas Svcs (KGS) 0.1 $30M 402k 75.13
Uranium Energy (UEC) 0.1 $30M 2.8M 10.66
Innodata Com New (INOD) 0.1 $28M 375k 75.58
Synaptics, Incorporated (SYNA) 0.1 $28M 227k 124.23
Ryman Hospitality Pptys (RHP) 0.1 $28M 218k 128.55
Riot Blockchain (RIOT) 0.1 $28M 1.0M 27.38
Fastenal Company (FAST) 0.1 $28M 573k 48.03
Miami Intl Hldgs (MIAX) 0.1 $26M 701k 37.16
Tesla Motors (TSLA) 0.1 $21M 50k 420.60
Netflix (NFLX) 0.1 $21M 291k 71.40
Alphabet Cap Stk Cl C (GOOG) 0.1 $20M 58k 353.33
Mueller Industries (MLI) 0.1 $16M 126k 122.93
Bank of America Corporation (BAC) 0.0 $14M 240k 56.98
Williams Companies (WMB) 0.0 $13M 181k 74.34
Cummins (CMI) 0.0 $11M 15k 713.21
Coca-Cola Company (KO) 0.0 $11M 134k 81.27
Sumitomo Mitsui Fin Grp Sponsored Adr (SMFG) 0.0 $11M 457k 23.58
Ciena Corp Com New (CIEN) 0.0 $10M 21k 490.56
Mitsubishi Ufj Financial Gro Sponsored Ads (MUFG) 0.0 $10M 515k 19.89
Wal-Mart Stores (WMT) 0.0 $10M 89k 113.26
Johnson & Johnson (JNJ) 0.0 $9.1M 36k 253.97
Quantinuum Cl A Com 0.0 $7.9M 96k 81.74
Trane Technologies SHS (TT) 0.0 $7.8M 16k 491.16
Nextera Energy (NEE) 0.0 $7.6M 87k 87.77
TJX Companies (TJX) 0.0 $7.4M 49k 151.50
Goldman Sachs (GS) 0.0 $7.1M 7.1k 1011.37
Thermo Fisher Scientific (TMO) 0.0 $7.1M 14k 501.36
Parker-Hannifin Corporation (PH) 0.0 $7.0M 7.1k 978.12
Merck & Co (MRK) 0.0 $6.8M 53k 128.50
Banco Bilbao Vizcaya Argenta Sponsored Adr (BBVA) 0.0 $6.7M 269k 25.06
First Ctzns Bancshares Inc D Cl A (FCNCA) 0.0 $6.6M 3.2k 2080.79
Amgen (AMGN) 0.0 $6.2M 17k 362.12
Ge Aerospace Com New (GE) 0.0 $5.7M 15k 373.73
Williams-Sonoma (WSM) 0.0 $5.5M 24k 233.10
Rollins (ROL) 0.0 $5.5M 132k 41.74
McKesson Corporation (MCK) 0.0 $5.2M 6.9k 755.60
Heico Corp Cl A (HEI.A) 0.0 $5.2M 20k 257.91
Hershey Company (HSY) 0.0 $5.1M 29k 175.45
Virtu Finl Cl A (VIRT) 0.0 $5.1M 86k 59.57
Bunge Global Sa Com Shs (BG) 0.0 $5.0M 47k 106.73
Equinix (EQIX) 0.0 $5.0M 4.8k 1042.39
Southern Copper Corporation (SCCO) 0.0 $4.2M 24k 174.26
Watsco, Incorporated (WSO) 0.0 $4.1M 9.8k 416.73
FedEx Corporation (FDX) 0.0 $4.0M 13k 313.13
Marvell Technology (MRVL) 0.0 $3.9M 13k 297.88
Pfizer (PFE) 0.0 $3.9M 162k 24.08
Dominion Resources (D) 0.0 $3.6M 53k 68.29
Verisign (VRSN) 0.0 $3.6M 14k 251.56
Bloom Energy Corp Com Cl A (BE) 0.0 $3.2M 11k 302.70
Antero Midstream Corp antero midstream (AM) 0.0 $3.0M 133k 22.75
Home Depot (HD) 0.0 $2.1M 6.0k 352.68
Danaher Corporation (DHR) 0.0 $2.1M 11k 190.48
Vanguard Index Fds Growth Etf (VUG) 0.0 $2.0M 23k 86.14
Abbvie (ABBV) 0.0 $2.0M 7.9k 251.64
Wingstop (WING) 0.0 $2.0M 11k 173.41
Ranpak Holdings Corp Com Cl A (PACK) 0.0 $1.9M 260k 7.31
Intuitive Surgical Com New (ISRG) 0.0 $1.8M 4.6k 397.68
Dex (DXCM) 0.0 $1.8M 26k 67.35
Karman Hldgs Common Stock (KRMN) 0.0 $1.7M 35k 49.92
Dpc Holdings Ordinary Shares 0.0 $1.5M 30k 49.06
Boston Scientific Corporation (BSX) 0.0 $1.5M 34k 42.68
UnitedHealth (UNH) 0.0 $1.4M 3.4k 415.63
Spdr Series Trust St Str Sp Biot (XBI) 0.0 $1.2M 7.5k 158.25
Vertex Pharmaceuticals Incorporated (VRTX) 0.0 $1.1M 2.2k 496.73
Spdr Series Trust St Str Sp Regbnk (KRE) 0.0 $923k 12k 74.85
Novo-nordisk A S Adr (NVO) 0.0 $748k 16k 47.94
Waste Connections (WCN) 0.0 $744k 4.5k 166.69
Ishares Tr Rus Md Cp Gr Etf (IWP) 0.0 $725k 4.9k 146.42
Wabtec Corporation (WAB) 0.0 $671k 2.5k 269.60
EQT Corporation (EQT) 0.0 $566k 11k 53.17
Ishares Msci Aust Etf (EWA) 0.0 $475k 17k 28.16
Ringcentral Cl A (RNG) 0.0 $419k 11k 38.98
Ishares Msci Brazil Etf (EWZ) 0.0 $417k 12k 34.50
D.R. Horton (DHI) 0.0 $357k 2.2k 162.88
Ionis Pharmaceuticals (IONS) 0.0 $336k 4.2k 79.29
Cameco Corporation (CCJ) 0.0 $317k 3.1k 101.86
Stag Industrial (STAG) 0.0 $246k 6.5k 38.06
Sophia Genetics Sa Ordinary Shares (SOPH) 0.0 $190k 33k 5.77
Pulmonx Corp (LUNG) 0.0 $143k 110k 1.30