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 SAIA
Shares Held
Position Value (USD)
23 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $54,659,168 | 155,600 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $74,691,776 | 228,751 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $68,226,538 | 227,908 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $47,426,299 | 173,095 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $130,513,153 | 373,503 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $154,849,762 | 339,784 | Shares | Sole | 2025-02-11 | |
| 2024-09-30 | $132,744,265 | 303,582 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $128,812,895 | 271,591 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $151,562,970 | 259,082 | Shares | Sole | 2024-05-10 | |
| 2023-12-31 | $164,949,951 | 376,409 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $154,076,630 | 386,496 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $173,513,185 | 506,741 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $136,494,101 | 501,669 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $118,739,687 | 566,290 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $106,344,520 | 559,708 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $95,579,388 | 508,401 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $90,389,438 | 370,722 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $123,956,937 | 367,792 | Shares | Sole | 2022-02-10 | |
| 2021-09-30 | $103,813,928 | 436,138 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $88,393,258 | 421,945 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 | $54,008,983 | 234,231 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $43,507,531 | 240,639 | Shares | Sole | 2021-02-12 | |
| 2020-09-30 | $31,739,220 | 251,619 | Shares | Sole | 2020-11-13 | |
| No 13F history on record for this holder in this stock. | ||||||