Westfield Capital Management Company

Latest statistics and disclosures from Westfield Capital Management's latest quarterly 13F-HR filing:

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Positions held by Westfield Capital Management Company consolidated in one spreadsheet with up to 7 years of data

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Portfolio Holdings for Westfield Capital Management

Westfield Capital Management holds 250 positions in its portfolio as reported in the March 2026 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
NVIDIA Corporation (NVDA) 4.6 $1.1B +6% 6.3M 174.40
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Ascendis Pharma A/s Sponsored Adr (ASND) 4.6 $1.1B -7% 4.8M 228.73
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Comfort Systems USA (FIX) 3.6 $856M -7% 621k 1378.99
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Apple (AAPL) 3.3 $795M -4% 3.1M 253.79
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Ftai Aviation SHS (FTAI) 2.9 $698M +21% 2.8M 245.00
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Microsoft Corporation (MSFT) 2.6 $611M 1.6M 370.17
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Alphabet Cap Stk Cl A (GOOGL) 2.4 $583M -6% 2.0M 287.56
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Howmet Aerospace (HWM) 2.2 $528M +3% 2.3M 230.46
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Vertiv Holdings Com Cl A (VRT) 2.0 $482M -15% 1.9M 250.58
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Amazon (AMZN) 2.0 $475M -2% 2.3M 208.27
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Axon Enterprise (AXON) 1.9 $452M +28% 1.1M 424.69
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Broadcom (AVGO) 1.6 $383M +11% 1.2M 309.51
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Eli Lilly & Co. (LLY) 1.4 $335M +31% 365k 919.77
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Tapestry (TPR) 1.3 $310M +4% 2.2M 141.11
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Meta Platforms Cl A (META) 1.3 $301M -19% 527k 572.13
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Lpl Financial Holdings (LPLA) 1.1 $265M +40% 882k 300.83
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MKS Instruments (MKSI) 1.0 $241M +24% 1.0M 229.81
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Insmed Com Par $.01 (INSM) 1.0 $240M +239% 1.5M 163.52
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Vaxcyte (PCVX) 0.9 $212M +3% 3.6M 58.11
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Rocket Lab Corp (RKLB) 0.9 $204M +22% 3.2M 64.22
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Netflix (NFLX) 0.8 $189M +23% 2.0M 96.15
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Api Group Corp Com Stk (APG) 0.8 $188M +34% 4.6M 40.52
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Quanta Services (PWR) 0.8 $182M +21% 332k 549.02
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Ge Vernova (GEV) 0.7 $174M +12% 199k 872.90
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Ares Management Corporation Cl A Com Stk (ARES) 0.7 $172M +36% 1.6M 109.10
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Rhythm Pharmaceuticals (RYTM) 0.7 $168M +52% 1.9M 86.97
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Taiwan Semiconductor Manufac Sponsored Ads (TSM) 0.7 $167M +10% 494k 337.95
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Marvell Technology (MRVL) 0.7 $166M -14% 1.7M 99.05
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Bloom Energy Corp Com Cl A (BE) 0.7 $161M +4% 1.2M 135.49
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Samsara Com Cl A (IOT) 0.7 $161M +28% 5.1M 31.69
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Ametek (AME) 0.7 $160M -17% 746k 214.36
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Permian Resources Corp Class A Com (PR) 0.7 $160M +25% 7.5M 21.32
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Dynatrace Com New (DT) 0.7 $156M +25% 4.2M 36.98
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Revolution Medicines (RVMD) 0.6 $151M -45% 1.6M 97.25
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Natera (NTRA) 0.6 $151M +5% 755k 199.99
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Fabrinet SHS (FN) 0.6 $149M +49% 285k 521.52
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Abivax Sa Sponsored Ads (ABVX) 0.6 $147M +30% 1.3M 111.35
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Servicenow (NOW) 0.6 $146M -5% 1.4M 104.55
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Technipfmc (FTI) 0.6 $141M +4% 2.0M 69.13
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Royal Caribbean Cruises (RCL) 0.6 $139M +12% 506k 275.18
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Hilton Worldwide Holdings (HLT) 0.6 $139M +27% 457k 304.08
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Visa Com Cl A (V) 0.6 $138M -24% 457k 302.24
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AmerisourceBergen (COR) 0.6 $137M +36% 437k 314.14
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Itt (ITT) 0.6 $134M +19% 703k 190.53
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Celsius Hldgs Com New (CELH) 0.6 $134M +144% 3.8M 35.48
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Nextpower Class A Com (NXT) 0.6 $134M 1.1M 120.55
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Cheniere Energy Com New (LNG) 0.5 $130M NEW 459k 283.76
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Amer Sports Com Shs (AS) 0.5 $130M NEW 3.9M 32.92
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Regal-beloit Corporation (RRX) 0.5 $128M -23% 682k 187.26
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Msci (MSCI) 0.5 $126M +12% 234k 539.01
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Guardant Health (GH) 0.5 $126M +152% 1.4M 92.37
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Live Nation Entertainment (LYV) 0.5 $124M +4% 811k 152.51
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Tesla Motors (TSLA) 0.5 $118M -31% 316k 371.75
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Globe Life (GL) 0.5 $117M +38% 842k 139.17
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Dutch Bros Cl A (BROS) 0.5 $117M +29% 2.3M 50.66
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Cloudflare Cl A Com (NET) 0.5 $112M +4% 542k 206.34
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Roku Com Cl A (ROKU) 0.5 $112M +5% 1.2M 94.62
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Xpo Logistics Inc equity (XPO) 0.5 $111M -21% 572k 194.55
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Fifth Third Ban (FITB) 0.5 $111M -36% 2.4M 46.46
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Everpure Cl A (PSTG) 0.5 $111M +23% 1.9M 59.04
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Kratos Defense & Sec Solutio Com New (KTOS) 0.5 $110M +25% 1.6M 70.51
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American Intl Group Com New (AIG) 0.5 $110M NEW 1.5M 75.25
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Snowflake Com Shs (SNOW) 0.5 $108M +10% 719k 150.82
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Primoris Services (PRIM) 0.4 $106M -21% 743k 143.04
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Jones Lang LaSalle Incorporated (JLL) 0.4 $106M NEW 348k 304.32
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Legence Corp Cl A (LGN) 0.4 $105M +15% 1.9M 56.46
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Legend Biotech Corp Sponsored Ads (LEGN) 0.4 $104M -6% 5.8M 18.09
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Key (KEY) 0.4 $104M +28% 5.2M 20.05
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Ross Stores (ROST) 0.4 $102M NEW 472k 216.63
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Palomar Hldgs (PLMR) 0.4 $102M 854k 119.50
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Palo Alto Networks (PANW) 0.4 $102M +41% 637k 160.32
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Diamondback Energy (FANG) 0.4 $100M +41% 504k 197.79
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Palantir Technologies Cl A (PLTR) 0.4 $99M +336% 675k 146.28
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Semtech Corporation (SMTC) 0.4 $99M -47% 1.3M 76.89
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Woodward Governor Company (WWD) 0.4 $97M NEW 272k 357.92
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Arista Networks Com Shs (ANET) 0.4 $96M NEW 780k 122.78
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AutoZone (AZO) 0.4 $96M -44% 28k 3377.77
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Sharkninja Com Shs (SN) 0.4 $96M +7% 905k 105.90
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Coherent Corp (COHR) 0.4 $95M -40% 397k 238.21
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Astera Labs (ALAB) 0.4 $94M +340% 860k 109.60
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Braze Com Cl A (BRZE) 0.4 $94M +81% 4.0M 23.61
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Jabil Circuit (JBL) 0.4 $93M +6% 349k 265.63
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Lincoln Electric Holdings (LECO) 0.4 $89M +6% 358k 249.08
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Imax Corp Cad (IMAX) 0.4 $89M 2.3M 38.01
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Genedx Holdings Corp Com Cl A (WGS) 0.4 $88M +34% 1.4M 64.22
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Garmin SHS (GRMN) 0.4 $87M +12% 376k 232.01
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Credo Technology Group Holdi Ordinary Shares (CRDO) 0.4 $87M +96% 926k 93.87
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F5 Networks (FFIV) 0.4 $86M +6% 299k 289.33
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East West Ban (EWBC) 0.4 $86M -7% 806k 106.76
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Life Time Group Holdings Common Stock (LTH) 0.4 $86M NEW 3.2M 26.94
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Birkenstock Holding Com Shs (BIRK) 0.4 $84M +19% 2.3M 35.83
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O'reilly Automotive (ORLY) 0.3 $82M -6% 888k 92.31
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Morgan Stanley Com New (MS) 0.3 $82M NEW 497k 164.57
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Xenon Pharmaceuticals (XENE) 0.3 $82M +14% 1.4M 58.15
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Alnylam Pharmaceuticals (ALNY) 0.3 $81M +162% 246k 330.87
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Firstcash Holdings (FCFS) 0.3 $81M -19% 432k 188.00
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IDEX Corporation (IEX) 0.3 $81M +5% 426k 189.55
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MasTec (MTZ) 0.3 $80M NEW 250k 321.74
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Houlihan Lokey Cl A (HLI) 0.3 $78M +4% 544k 143.62
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Plexus (PLXS) 0.3 $78M +7294% 385k 202.54
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Karman Hldgs Common Stock (KRMN) 0.3 $77M +15% 964k 80.05
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Applied Industrial Technologies (AIT) 0.3 $77M 289k 265.32
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Targa Res Corp (TRGP) 0.3 $77M +53% 305k 250.73
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Calix (CALX) 0.3 $76M +34% 1.5M 48.99
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Adaptive Biotechnologies Cor (ADPT) 0.3 $76M +33% 5.4M 13.88
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Wynn Resorts (WYNN) 0.3 $75M +27% 740k 101.55
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Clean Harbors (CLH) 0.3 $75M +6% 261k 286.73
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IDEXX Laboratories (IDXX) 0.3 $75M -9% 133k 561.89
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Vistra Energy (VST) 0.3 $74M -7% 495k 150.33
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Rockwell Automation (ROK) 0.3 $74M -11% 206k 358.88
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Guidewire Software (GWRE) 0.3 $73M NEW 487k 149.56
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C H Robinson Worldwide In Com New (CHRW) 0.3 $71M -22% 430k 166.07
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Lowe's Companies (LOW) 0.3 $71M NEW 301k 236.28
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Newamsterdam Pharma Company Ordinary Shares (NAMS) 0.3 $71M NEW 2.2M 32.01
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CSX Corporation (CSX) 0.3 $68M -2% 1.7M 41.05
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Onto Innovation (ONTO) 0.3 $67M -32% 327k 205.07
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Doordash Cl A (DASH) 0.3 $67M +4% 444k 150.15
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Red Rock Resorts Cl A (RRR) 0.3 $66M +6% 1.2M 53.36
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Casella Waste Sys Cl A (CWST) 0.3 $65M -50% 823k 79.34
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Packaging Corporation of America (PKG) 0.3 $65M +6% 304k 212.22
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Wintrust Financial Corporation (WTFC) 0.3 $63M -18% 455k 138.94
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Microchip Technology (MCHP) 0.3 $63M NEW 970k 64.61
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Masimo Corporation (MASI) 0.3 $61M -77% 341k 177.87
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Zscaler Incorporated (ZS) 0.3 $60M +52% 428k 140.29
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Healthequity (HQY) 0.2 $60M -63% 713k 83.57
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Descartes Sys Grp (DSGX) 0.2 $57M -32% 802k 71.56
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Procore Technologies (PCOR) 0.2 $57M -9% 1.0M 57.00
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Avient Corp (AVNT) 0.2 $57M 1.6M 36.30
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Hubspot (HUBS) 0.2 $57M -33% 233k 244.10
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Stepstone Group Com Cl A (STEP) 0.2 $56M +49% 1.2M 47.72
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Installed Bldg Prods (IBP) 0.2 $55M NEW 208k 265.15
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Vita Coco Co Inc/the (COCO) 0.2 $55M +7% 1.2M 47.91
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Saia (SAIA) 0.2 $55M -31% 156k 351.28
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Moody's Corporation (MCO) 0.2 $54M +4% 124k 436.25
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Synopsys (SNPS) 0.2 $53M +9% 133k 396.48
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Parker-Hannifin Corporation (PH) 0.2 $52M 59k 895.24
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Lattice Semiconductor (LSCC) 0.2 $52M -16% 563k 92.76
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Topbuild (BLD) 0.2 $52M -41% 149k 351.30
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Bank of America Corporation (BAC) 0.2 $52M -72% 1.1M 48.75
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Glaukos (GKOS) 0.2 $52M NEW 482k 107.66
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Kkr & Co (KKR) 0.2 $52M +2% 558k 92.50
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Coeur Mng Com New (CDE) 0.2 $51M NEW 2.7M 18.77
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salesforce (CRM) 0.2 $51M +52% 272k 186.67
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Marriott Intl Cl A (MAR) 0.2 $50M NEW 153k 327.07
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Madrigal Pharmaceuticals (MDGL) 0.2 $50M NEW 95k 523.47
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Affirm Hldgs Com Cl A (AFRM) 0.2 $50M +26% 1.1M 45.82
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Nxp Semiconductors N V (NXPI) 0.2 $49M NEW 248k 196.86
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J.B. Hunt Transport Services (JBHT) 0.2 $48M -28% 229k 211.90
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Dorman Products (DORM) 0.2 $48M 461k 104.36
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Toast Cl A (TOST) 0.2 $48M +41% 1.8M 26.51
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Planet Labs Pbc Com Cl A (PL) 0.2 $46M NEW 1.6M 27.95
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Bio-techne Corporation (TECH) 0.2 $45M -13% 856k 52.26
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Robinhood Mkts Com Cl A (HOOD) 0.2 $44M +102% 633k 69.30
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Entegris (ENTG) 0.2 $44M NEW 372k 117.24
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Riot Blockchain (RIOT) 0.2 $43M NEW 3.5M 12.36
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Fair Isaac Corporation (FICO) 0.2 $43M -10% 40k 1067.53
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Talen Energy Corp (TLN) 0.2 $42M +5% 132k 319.23
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Corpay Com Shs (CPAY) 0.2 $42M NEW 143k 290.99
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Mongodb Cl A (MDB) 0.2 $40M +3% 165k 244.77
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Ionq Inc Pipe (IONQ) 0.2 $40M +23% 1.4M 28.83
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Hamilton Lane Cl A (HLNE) 0.2 $36M 364k 99.40
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Micron Technology (MU) 0.1 $34M NEW 100k 337.84
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Freeport Mcmoran CL B (FCX) 0.1 $32M NEW 544k 58.78
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Option Care Health Com New (OPCH) 0.1 $32M -57% 1.2M 26.92
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Lendingclub Issuance Tr Ser Com New (LC) 0.1 $30M NEW 2.1M 14.32
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Spx Corp (SPXC) 0.1 $30M +5% 149k 199.94
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RadNet (RDNT) 0.1 $30M 532k 55.89
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Fastenal Company (FAST) 0.1 $30M NEW 638k 46.40
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M/a (MTSI) 0.1 $29M -42% 133k 222.07
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Rigetti Computing Common Stock (RGTI) 0.1 $27M +102% 1.9M 14.04
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Caterpillar (CAT) 0.1 $23M NEW 32k 708.45
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Core Scientific (CORZ) 0.1 $22M +6% 1.5M 14.96
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Uranium Energy (UEC) 0.1 $21M NEW 1.6M 13.50
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Danaher Corporation (DHR) 0.1 $21M -65% 111k 189.60
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Oruka Therapeutics (ORKA) 0.1 $15M NEW 313k 49.05
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TransDigm Group Incorporated (TDG) 0.1 $15M -20% 13k 1158.96
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Pattern Group Com Ser A (PTRN) 0.1 $15M 1.2M 12.43
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Alphabet Cap Stk Cl C (GOOG) 0.1 $15M +10% 51k 286.86
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Mueller Industries (MLI) 0.1 $14M 126k 110.80
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Williams Companies (WMB) 0.1 $13M -21% 181k 72.78
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Applied Digital Corp Com New (APLD) 0.1 $13M -47% 542k 23.74
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Ciena Corp Com New (CIEN) 0.1 $12M 32k 388.23
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Coca-Cola Company (KO) 0.0 $10M 134k 76.05
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Sumitomo Mitsui Fin Grp Sponsored Adr (SMFG) 0.0 $9.0M 458k 19.75
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Wal-Mart Stores (WMT) 0.0 $8.9M 72k 124.28
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Johnson & Johnson (JNJ) 0.0 $8.8M +7% 36k 244.44
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Mitsubishi Ufj Financial Gro Sponsored Ads (MUFG) 0.0 $8.8M 516k 16.97
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Cummins (CMI) 0.0 $8.3M 15k 538.02
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Nextera Energy (NEE) 0.0 $8.1M +3% 87k 92.88
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TJX Companies (TJX) 0.0 $7.8M 49k 159.70
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Wells Fargo & Company (WFC) 0.0 $7.0M 88k 79.61
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Rollins (ROL) 0.0 $7.0M +31% 131k 53.41
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Home Depot (HD) 0.0 $6.7M 20k 328.89
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Thermo Fisher Scientific (TMO) 0.0 $6.6M 14k 491.53
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Trane Technologies SHS (TT) 0.0 $6.6M -86% 16k 416.74
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M&T Bank Corporation (MTB) 0.0 $6.2M 30k 206.72
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Hershey Company (HSY) 0.0 $6.1M 29k 207.89
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First Ctzns Bancshares Inc D Cl A (FCNCA) 0.0 $6.0M 3.2k 1884.66
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Amgen (AMGN) 0.0 $6.0M NEW 17k 351.85
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Goldman Sachs (GS) 0.0 $6.0M 7.1k 845.99
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McKesson Corporation (MCK) 0.0 $6.0M 6.9k 865.36
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Banco Bilbao Vizcaya Argenta Sponsored Adr (BBVA) 0.0 $5.8M 269k 21.66
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Raymond James Financial (RJF) 0.0 $5.8M 40k 144.79
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McDonald's Corporation (MCD) 0.0 $5.6M 18k 310.79
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Medtronic SHS (MDT) 0.0 $5.2M 60k 86.65
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Merck & Co (MRK) 0.0 $5.2M -19% 43k 120.29
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Citigroup Com New (C) 0.0 $5.0M 45k 113.41
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Heico Corp Cl A (HEI.A) 0.0 $4.2M -95% 20k 211.09
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Southern Copper Corporation (SCCO) 0.0 $4.2M -26% 24k 172.06
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Expedia Group Com New (EXPE) 0.0 $3.9M 17k 230.89
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Pfizer (PFE) 0.0 $3.8M -3% 134k 28.08
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Gilead Sciences (GILD) 0.0 $3.7M -35% 27k 139.37
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Watsco, Incorporated (WSO) 0.0 $3.6M NEW 9.8k 363.79
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Pepsi (PEP) 0.0 $3.5M NEW 23k 155.29
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Dominion Resources (D) 0.0 $3.3M +16% 53k 61.82
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Cardinal Health (CAH) 0.0 $2.8M -26% 13k 211.31
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Abbvie (ABBV) 0.0 $2.3M -97% 11k 217.49
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Gartner (IT) 0.0 $2.3M 14k 158.34
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Intuitive Surgical Com New (ISRG) 0.0 $1.9M NEW 4.0k 460.99
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Ishares Tr Rus 1000 Grw Etf (IWF) 0.0 $1.7M -68% 4.1k 426.36
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Dex (DXCM) 0.0 $1.7M -98% 27k 62.80
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Ranpak Holdings Corp Com Cl A (PACK) 0.0 $1.5M 407k 3.57
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Rambus (RMBS) 0.0 $1.2M -96% 14k 86.03
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Vanguard Index Fds Growth Etf (VUG) 0.0 $1.1M NEW 2.4k 436.73
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Ishares Tr Rus Md Cp Gr Etf (IWP) 0.0 $1.1M -54% 8.3k 128.12
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Advanced Micro Devices (AMD) 0.0 $1.0M -97% 5.0k 203.43
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Monday SHS (MNDY) 0.0 $924k -4% 13k 69.11
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Genius Sports Shares Cl A (GENI) 0.0 $918k -96% 207k 4.43
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International Business Machines (IBM) 0.0 $805k 3.3k 242.39
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UnitedHealth (UNH) 0.0 $749k -98% 2.8k 270.59
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Ishares Tr S&p 500 Grwt Etf (IVW) 0.0 $734k NEW 6.5k 113.11
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Waste Connections (WCN) 0.0 $726k -98% 4.5k 162.44
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EQT Corporation (EQT) 0.0 $677k 11k 63.64
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Novo-nordisk A S Adr (NVO) 0.0 $629k NEW 17k 36.75
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Wabtec Corporation (WAB) 0.0 $622k NEW 2.5k 249.91
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Applovin Corp Com Cl A (APP) 0.0 $502k 1.3k 398.00
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Ishares Tr S&p Mc 400gr Etf (IJK) 0.0 $494k NEW 4.9k 100.62
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Vertex Pharmaceuticals Incorporated (VRTX) 0.0 $386k -23% 864.00 446.54
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Boston Scientific Corporation (BSX) 0.0 $374k -31% 6.0k 62.75
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Insulet Corporation (PODD) 0.0 $353k -99% 1.7k 209.81
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Core Natural Resources Com Shs (CNR) 0.0 $352k NEW 3.4k 104.73
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Cameco Corporation (CCJ) 0.0 $338k NEW 3.1k 108.61
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Applied Materials (AMAT) 0.0 $320k 936.00 341.79
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Ionis Pharmaceuticals (IONS) 0.0 $263k +10% 3.5k 75.09
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Scholar Rock Hldg Corp (SRRK) 0.0 $255k NEW 5.2k 49.16
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Avalo Therapeutics Com New (AVTX) 0.0 $234k NEW 16k 14.93
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Stag Industrial (STAG) 0.0 $233k 6.5k 36.06
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Praxis Precision Medicines I Com New (PRAX) 0.0 $213k NEW 662.00 322.19
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Immunovant (IMVT) 0.0 $213k NEW 8.6k 24.84
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Pulmonx Corp (LUNG) 0.0 $142k -40% 110k 1.29
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Past Filings by Westfield Capital Management

SEC 13F filings are viewable for Westfield Capital Management going back to 2010

View all past filings