WESTFIELD CAPITAL MANAGEMENT CO LP
Top Portfolio Positions
243 positions ·
$23,810,970,015 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| NVDA |
Nvidia Corp
Technology
|
6,317,039 | $1,101,691,601 | 4.63% | |
| ASND |
Ascendis Pharma A/S
Healthcare
|
4,813,440 | $1,100,978,131 | 4.62% | |
| FIX |
Comfort Systems USA Inc
Industrials
|
620,915 | $856,235,575 | 3.60% | |
| AAPL |
Apple Inc.
Technology
|
3,133,113 | $795,152,748 | 3.34% | |
| FTAI |
FTAI Aviation Ltd.
Industrials
|
2,848,227 | $697,815,615 | 2.93% | |
| MSFT |
Microsoft Corp
Technology
|
1,649,513 | $610,600,227 | 2.56% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
2,026,744 | $582,810,504 | 2.45% | |
| HWM |
Howmet Aerospace Inc.
Industrials
|
2,289,697 | $527,683,570 | 2.22% | |
| VRT |
Vertiv Holdings Co
Industrials
|
1,921,696 | $481,538,583 | 2.02% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
2,279,654 | $474,783,538 | 1.99% |
Portfolio Trend
25 quarters · across all stocks
Holdings in PACK
Shares Held
Position Value (USD)
21 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,454,160 | 407,328 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $2,203,644 | 407,328 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $2,289,183 | 407,328 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $1,454,160 | 407,328 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $2,207,717 | 407,328 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $2,645,483 | 384,518 | Shares | Sole | 2025-02-11 | |
| 2024-09-30 | $2,510,902 | 384,518 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $2,386,803 | 371,198 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $3,182,391 | 404,370 | Shares | Sole | 2024-05-10 | |
| 2023-12-31 | $2,575,059 | 442,450 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $2,406,928 | 442,450 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $1,817,944 | 402,200 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $14,520,098 | 2,781,628 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $15,309,512 | 2,653,295 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $8,944,093 | 2,615,232 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $18,105,430 | 2,586,490 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $47,191,910 | 2,309,932 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $44,349,811 | 1,180,144 | Shares | Sole | 2022-02-10 | |
| 2021-09-30 | $32,422,322 | 1,208,886 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $28,620,328 | 1,143,441 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 | $12,801,349 | 638,153 | Shares | Sole | 2021-05-14 | |
| No 13F history on record for this holder in this stock. | ||||||