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 PRI
Shares Held
Position Value (USD)
22 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2025-12-31 | $60,610,480 | 234,597 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $71,277,894 | 256,774 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $68,458,824 | 250,151 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $78,594,299 | 276,225 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $65,176,084 | 240,130 | Shares | Sole | 2025-02-11 | |
| 2024-09-30 | $51,441,486 | 194,009 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $62,632,425 | 264,741 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $57,839,304 | 228,650 | Shares | Sole | 2024-05-10 | |
| 2023-12-31 | $47,136,323 | 229,084 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $42,660,082 | 219,886 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $46,506,823 | 235,168 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $36,919,988 | 214,352 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $25,660,059 | 180,934 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $21,341,665 | 172,877 | Shares | Sole | 2022-11-14 | |
| 2021-12-31 | $29,958,000 | 195,459 | Shares | Sole | 2022-02-10 | |
| 2021-09-30 | $38,404,581 | 249,981 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $33,528,777 | 218,942 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 | $39,974,814 | 270,429 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $35,305,555 | 263,612 | Shares | Sole | 2021-02-12 | |
| 2020-09-30 | $31,160,113 | 275,412 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $34,000,793 | 291,602 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $12,706,612 | 143,610 | Shares | Sole | 2020-05-14 | |
| No 13F history on record for this holder in this stock. | ||||||