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 |
|---|---|---|---|---|
| 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
Holdings in STEP
Shares Held
Position Value (USD)
11 of 11 shown
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $56,212,776 | 1,177,971 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $50,469,769 | 786,501 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $50,858,725 | 778,728 | Shares | Sole | 2025-11-12 | |
| 2023-09-30 | $28,834,719 | 913,069 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $21,630,648 | 871,852 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $20,019,303 | 824,858 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $20,046,956 | 796,146 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $18,791,400 | 766,683 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $20,216,303 | 776,654 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $21,927,342 | 663,259 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $23,133,039 | 556,484 | Shares | Sole | 2022-02-10 | |
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