Terminal · Institutions
Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.
Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.
WESTFIELD CAPITAL MANAGEMENT CO LP (CIK 1177719) reported $23.83B across 248 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: NVDA ($1.10B, 4.62%), ASND ($1.10B, 4.62%), FIX ($856.2M, 3.59%), AAPL ($795.2M, 3.34%), FTAI ($697.8M, 2.93%). Source: SEC Form 13F.
| Rank | Ticker | Company | Value | % Portfolio | Shares | Action |
|---|---|---|---|---|---|---|
| 1 | NVDA | NVIDIA CORPORATION | $1.10B | 4.62% | 6.3M | Added |
| 2 | ASND | ASCENDIS PHARMA A/S | $1.10B | 4.62% | 4.8M | Trimmed |
| 3 | FIX | COMFORT SYS USA INC | $856.2M | 3.59% | 620,915 | Trimmed |
| 4 | AAPL | APPLE INC | $795.2M | 3.34% | 3.1M | Trimmed |
| 5 | FTAI | FTAI AVIATION LTD | $697.8M | 2.93% | 2.8M | Added |
| 6 | MSFT | MICROSOFT CORP | $610.6M | 2.56% | 1.6M | Added |
| 7 | GOOGL | ALPHABET INC | $582.8M | 2.45% | 2.0M | Trimmed |
| 8 | HWM | HOWMET AEROSPACE INC | $527.7M | 2.21% | 2.3M | Added |
| 9 | VRT | VERTIV HOLDINGS CO | $481.5M | 2.02% | 1.9M | Trimmed |
| 10 | AMZN | AMAZON COM INC | $474.8M | 1.99% | 2.3M | Trimmed |
| 11 | AXON | AXON ENTERPRISE INC | $451.9M | 1.90% | 1.1M | Added |
| 12 | AVGO | BROADCOM INC | $382.8M | 1.61% | 1.2M | Added |
| 13 | LLY | ELI LILLY & CO | $335.3M | 1.41% | 364,579 | Added |
| 14 | TPR | TAPESTRY INC | $310.3M | 1.30% | 2.2M | Added |
| 15 | META | META PLATFORMS INC | $301.4M | 1.26% | 526,822 | Trimmed |
| 16 | LPLA | LPL FINL HLDGS INC | $265.2M | 1.11% | 881,506 | Added |
| 17 | INSM | INSMED INC | $240.1M | 1.01% | 1.5M | Added |
| 18 | MKSI | MKS INC. | $240.6M | 1.01% | 1.0M | Added |
| 19 | PCVX | VAXCYTE INC | $211.9M | 0.89% | 3.6M | Added |
| 20 | RKLB | ROCKET LAB CORP | $203.7M | 0.85% | 3.2M | Added |
| 21 | APG | API GROUP CORP | $187.8M | 0.79% | 4.6M | Added |
| 22 | NFLX | NETFLIX INC. | $189.4M | 0.79% | 2.0M | Added |
| 23 | PWR | QUANTA SVCS INC | $182.2M | 0.76% | 331,816 | Added |
| 24 | GEV | GE VERNOVA INC | $174.0M | 0.73% | 199,306 | Added |
| 25 | ARES | ARES MANAGEMENT CORPORATION | $171.6M | 0.72% | 1.6M | Added |
Source: SEC Form 13F filings · as of 2026-03-31