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 | Masimo Corporation Common stock | $-210.03M | -1.2M -77.58% | 341,229 0.25% of portfolio | high |
| Q1 2026 as of | Add | Insmed Inc Common stock | $169.40M | +1.0M +239.51% | 1,468,459 1.01% of portfolio | high |
| Q1 2026 as of | Trim | Bank of America Corp /De Common stock | $-134.39M | -2.8M -72.10% | 1,066,885 0.22% of portfolio | high |
| Q1 2026 as of | Exit | Commvault Systems Inc Common stock | $-132.52M | -1.1M -100.00% | 0 | high |
| Q1 2026 as of | Exit | Atlassian Corporation Common stock | $-131.69M | -812K -100.00% | 0 | high |
| Q1 2026 as of | New | Cheniere Energy, Inc. Common stock | $130.26M | +459K | 459,044 0.55% of portfolio | high |
| Q1 2026 as of | New | G0260P102 Common stock | $129.62M | +3.9M | 3,937,521 0.54% of portfolio | high |
| Q1 2026 as of | Exit | ADMA Biologics Inc Common stock | $-127.55M | -7.0M -100.00% | 0 | high |
| Q1 2026 as of | Trim | Revolution Medicines, Inc. Common stock | $-125.30M | -1.3M -45.29% | 1,556,578 0.64% of portfolio | high |
| Q1 2026 as of | Add | FTAI Aviation Ltd Common stock | $121.91M | +498K +21.17% | 2,848,227 2.93% of portfolio | high |
| Q1 2026 as of | New | American International Group, Inc. Common stock | $109.77M | +1.5M | 1,458,711 0.46% of portfolio | high |
| Q1 2026 as of | New | Jones Lang LaSalle Inc Common stock | $105.84M | +348K | 347,779 0.44% of portfolio | high |
| Q1 2026 as of | Trim | Healthequity, Inc. Common stock | $-103.59M | -1.2M -63.49% | 712,848 0.25% of portfolio | high |
| Q1 2026 as of | New | Ross Stores, Inc. Common stock | $102.23M | +472K | 471,916 0.43% of portfolio | high |
| Q1 2026 as of | Add | Axon Enterprise Inc Common stock | $98.93M | +233K +28.03% | 1,064,134 1.90% of portfolio | high |
| Q1 2026 as of | New | Woodward Inc Common stock | $97.42M | +272K | 272,185 0.41% of portfolio | high |
| Q1 2026 as of | New | ANET Arista Networks, Inc. Common Stock | $95.82M | +780K | 780,402 0.40% of portfolio | high |
| Q1 2026 as of | Exit | Alkami Technology, Inc. Common stock | $-95.01M | -4.1M -100.00% | 0 | high |
| Q1 2026 as of | Exit | Oracle Corp Common stock | $-92.46M | -474K -100.00% | 0 | high |
| Q1 2026 as of | Trim | Semtech Corp Common stock | $-89.81M | -1.2M -47.70% | 1,280,594 0.41% of portfolio | high |
| Q1 2026 as of | Trim | Vertiv Holdings Co Common stock | $-89.21M | -356K -15.63% | 1,921,696 2.02% of portfolio | high |
| Q1 2026 as of | Trim | AbbVie Inc. Common stock | $-88.99M | -409K -97.47% | 10,619 <0.01% of portfolio | high |
| Q1 2026 as of | Trim | Dexcom Inc Common stock | $-88.71M | -1.4M -98.12% | 27,074 <0.01% of portfolio | high |
| Q1 2026 as of | Exit | Burlington Stores, Inc. Common stock | $-87.32M | -302K -100.00% | 0 | high |
| Q1 2026 as of | New | Life Time Group Holdings, Inc. Common stock | $85.82M | +3.2M | 3,185,515 0.36% of portfolio | high |
| Q1 2026 as of | Trim | Ascendis Pharma A/S Common stock | $-85.15M | -372K -7.18% | 4,813,440 4.62% of portfolio | high |
| Q1 2026 as of | Trim | Heico Corp Common stock | $-82.73M | -392K -95.11% | 20,130 0.02% of portfolio | high |
| Q1 2026 as of | Exit | DraftKings Inc. Common stock | $-82.12M | -2.4M -100.00% | 0 | high |
| Q1 2026 as of | New | Morgan Stanley Common stock | $81.72M | +497K | 496,558 0.34% of portfolio | high |
| Q1 2026 as of | Trim | Insulet Corp Common stock | $-80.73M | -385K -99.56% | 1,682 <0.01% of portfolio | high |
| Q1 2026 as of | New | Mastec Inc Common stock | $80.43M | +250K | 249,980 0.34% of portfolio | high |
| Q1 2026 as of | Exit | TransUnion Common stock | $-80.05M | -934K -100.00% | 0 | high |
| Q1 2026 as of | Add | ELI LILLY & Co Common stock | $80.05M | +87K +31.36% | 364,579 1.41% of portfolio | high |
| Q1 2026 as of | Add | Celsius Holdings, Inc. Common stock | $78.93M | +2.2M +144.07% | 3,768,911 0.56% of portfolio | high |
| Q1 2026 as of | Add | LPL Financial Holdings Inc. Common stock | $77.00M | +256K +40.91% | 881,506 1.11% of portfolio | high |
| Q1 2026 as of | Trim | Autozone Inc Common stock | $-76.87M | -23K -44.52% | 28,363 0.40% of portfolio | high |
| Q1 2026 as of | Add | Plexus Corp Common stock | $76.82M | +379K +7294.10% | 384,493 0.33% of portfolio | high |
| Q1 2026 as of | Add | Palantir Technologies Inc Common stock | $76.06M | +520K +336.37% | 674,557 0.41% of portfolio | high |
| Q1 2026 as of | Add | Guardant Health, Inc. Common stock | $76.05M | +823K +152.70% | 1,362,539 0.53% of portfolio | high |
| Q1 2026 as of | Trim | Meta Platforms Inc Common stock | $-73.50M | -128K -19.60% | 526,822 1.26% of portfolio | high |
| Q1 2026 as of | Add | Astera Labs, Inc. Common stock | $72.86M | +665K +340.42% | 860,113 0.40% of portfolio | high |
| Q1 2026 as of | New | Guidewire Software, Inc. Common stock | $72.77M | +487K | 486,581 0.31% of portfolio | high |
| Q1 2026 as of | Exit | Vulcan Materials Co Common stock | $-72.46M | -254K -100.00% | 0 | high |
| Q1 2026 as of | Exit | Silicon Laboratories Inc Common stock | $-71.55M | -547K -100.00% | 0 | high |
| Q1 2026 as of | New | Lowes Companies Inc Common stock | $71.11M | +301K | 300,962 0.30% of portfolio | high |
| Q1 2026 as of | New | N62509109 Common stock | $70.52M | +2.2M | 2,202,913 0.30% of portfolio | high |
| Q1 2026 as of | Exit | Arthur J. Gallagher & Co. Common stock | $-67.15M | -259K -100.00% | 0 | high |
| Q1 2026 as of | Trim | Casella Waste Systems Inc Common stock | $-66.86M | -843K -50.61% | 822,492 0.27% of portfolio | high |
| Q1 2026 as of | Exit | Blue Owl Capital Inc. Common stock | $-66.09M | -4.4M -100.00% | 0 | high |
| Q1 2026 as of | Trim | Comfort Systems USA Inc Common stock | $-66.08M | -48K -7.16% | 620,915 3.59% of portfolio | high |