Institutions / Westfield Capital Management Company, L.P. / Activity
Activity — Westfield Capital Management Company, L.P.
278 moves.
| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Q1 2026 as of | Trim | Coherent Corp Common stock | $-63.95M | -268K -40.37% | 396,644 0.40% of portfolio | high |
| Q1 2026 as of | Add | NVIDIA Corp Common stock | $63.83M | +366K +6.15% | 6,317,039 4.62% of portfolio | high |
| Q1 2026 as of | Trim | Fifth Third Bancorp Common stock | $-63.26M | -1.4M -36.34% | 2,385,422 0.46% of portfolio | high |
| Q1 2026 as of | New | Microchip Technology Inc Common stock | $62.69M | +970K | 970,295 0.26% of portfolio | high |
| Q1 2026 as of | Trim | Unitedhealth Group Inc Common stock | $-61.56M | -228K -98.80% | 2,767 <0.01% of portfolio | high |
| Q1 2026 as of | Exit | Primerica, Inc. Common stock | $-60.61M | -235K -100.00% | 0 | high |
| Q1 2026 as of | Exit | iRhythm Holdings, Inc. Common stock | $-57.68M | -325K -100.00% | 0 | high |
| Q1 2026 as of | Add | Rhythm Pharmaceuticals, Inc. Common stock | $57.57M | +662K +52.24% | 1,929,123 0.70% of portfolio | high |
| Q1 2026 as of | New | Installed Building Products, Inc. Common stock | $55.22M | +208K | 208,248 0.23% of portfolio | high |
| Q1 2026 as of | Trim | Tesla Inc Common stock | $-54.12M | -146K -31.53% | 316,102 0.49% of portfolio | high |
| Q1 2026 as of | New | Glaukos Corp Common stock | $51.92M | +482K | 482,219 0.22% of portfolio | high |
| Q1 2026 as of | New | Coeur Mining, Inc. Common stock | $51.41M | +2.7M | 2,738,846 0.22% of portfolio | high |
| Q1 2026 as of | Add | Alnylam Pharmaceuticals Inc Common stock | $50.32M | +152K +162.77% | 245,539 0.34% of portfolio | high |
| Q1 2026 as of | Trim | Waste Connections Inc Common stock | $-50.16M | -309K -98.57% | 4,466 <0.01% of portfolio | high |
| Q1 2026 as of | New | Marriott International Inc/MD Common stock | $50.11M | +153K | 153,219 0.21% of portfolio | high |
| Q1 2026 as of | Exit | Bio-Rad Laboratories, Inc. Common stock | $-50.03M | -165K -100.00% | 0 | high |
| Q1 2026 as of | Trim | Advanced Micro Devices Inc Common stock | $-49.93M | -245K -98.00% | 5,020 <0.01% of portfolio | medium |
| Q1 2026 as of | Exit | Fnb CORP/PA Common stock | $-49.64M | -2.9M -100.00% | 0 | medium |
| Q1 2026 as of | New | Madrigal Pharmaceuticals, Inc. Common stock | $49.63M | +95K | 94,813 0.21% of portfolio | medium |
| Q1 2026 as of | Add | Fabrinet Common stock | $49.39M | +95K +49.80% | 284,874 0.62% of portfolio | medium |
| Q1 2026 as of | Exit | Builders FirstSource Inc Common stock | $-48.94M | -476K -100.00% | 0 | medium |
| Q1 2026 as of | New | NXP Semiconductors N.V. Common stock | $48.82M | +248K | 247,996 0.20% of portfolio | medium |
| Q1 2026 as of | Add | APi Group Corp Common stock | $47.88M | +1.2M +34.22% | 4,634,929 0.79% of portfolio | medium |
| Q1 2026 as of | Add | MKS Inc Common stock | $47.57M | +207K +24.65% | 1,046,763 1.01% of portfolio | medium |
| Q1 2026 as of | Add | Ares Management Corporation Common stock | $46.00M | +422K +36.62% | 1,572,787 0.72% of portfolio | medium |
| Q1 2026 as of | New | Planet Labs PBC Common stock | $45.76M | +1.6M | 1,637,041 0.19% of portfolio | medium |
| Q1 2026 as of | Trim | Visa Inc Common stock | $-44.54M | -147K -24.40% | 456,548 0.58% of portfolio | medium |
| Q1 2026 as of | Trim | Alphabet Inc. Common stock | $-43.63M | -152K -6.97% | 2,026,744 2.45% of portfolio | medium |
| Q1 2026 as of | New | Entegris, Inc. Common stock | $43.58M | +372K | 371,686 0.18% of portfolio | medium |
| Q1 2026 as of | New | Riot Platforms, Inc. Common stock | $43.26M | +3.5M | 3,499,880 0.18% of portfolio | medium |
| Q1 2026 as of | Add | Credo Technology Group Holding Ltd Common stock | $42.76M | +456K +96.78% | 926,219 0.36% of portfolio | medium |
| Q1 2026 as of | Trim | Trane Technologies plc Common stock | $-42.64M | -102K -86.59% | 15,841 0.03% of portfolio | medium |
| Q1 2026 as of | Trim | Option Care Health Inc Common stock | $-42.60M | -1.6M -57.23% | 1,182,814 0.13% of portfolio | medium |
| Q1 2026 as of | Add | Braze, Inc. Common stock | $42.18M | +1.8M +81.68% | 3,973,906 0.39% of portfolio | medium |
| Q1 2026 as of | Exit | Ryan Specialty Holdings, Inc. Common stock | $-42.04M | -814K -100.00% | 0 | medium |
| Q1 2026 as of | New | Corpay Inc Common stock | $41.65M | +143K | 143,120 0.17% of portfolio | medium |
| Q1 2026 as of | Trim | Danaher Corp /De Common stock | $-40.00M | -211K -65.63% | 110,492 0.09% of portfolio | medium |
| Q1 2026 as of | Trim | Regal Rexnord Corp Common stock | $-39.58M | -211K -23.67% | 681,717 0.54% of portfolio | medium |
| Q1 2026 as of | Exit | G63755105 Common stock | $-39.39M | -2.4M -100.00% | 0 | medium |
| Q1 2026 as of | Add | Broadcom Inc. Common stock | $38.57M | +125K +11.20% | 1,236,925 1.61% of portfolio | medium |
| Q1 2026 as of | Trim | TopBuild Corp Common stock | $-37.54M | -107K -41.84% | 148,581 0.22% of portfolio | medium |
| Q1 2026 as of | Exit | ROBLOX Corp Common stock | $-37.41M | -462K -100.00% | 0 | medium |
| Q1 2026 as of | Add | RKLB Rocket Lab Corp Common Stock | $37.26M | +580K +22.38% | 3,172,611 0.85% of portfolio | medium |
| Q1 2026 as of | Add | Cencora Inc Common stock | $36.97M | +118K +36.87% | 436,909 0.58% of portfolio | medium |
| Q1 2026 as of | Trim | Apple Inc. Common stock | $-35.84M | -141K -4.31% | 3,133,113 3.34% of portfolio | medium |
| Q1 2026 as of | Add | Netflix Inc Common stock | $35.81M | +372K +23.31% | 1,969,994 0.79% of portfolio | medium |
| Q1 2026 as of | Add | Samsara Inc. Common stock | $35.46M | +1.1M +28.30% | 5,072,821 0.67% of portfolio | medium |
| Q1 2026 as of | Add | 00370M103 Common stock | $34.85M | +313K +30.99% | 1,322,938 0.62% of portfolio | medium |
| Q1 2026 as of | Exit | Avidity Biosciences, Inc. Common stock | $-33.98M | -471K -100.00% | 0 | medium |
| Q1 2026 as of | New | Micron Technology Inc Common stock | $33.93M | +100K | 100,434 0.14% of portfolio | medium |