§ 13F · FUND PROFILE
WESTFIELD CAPITAL MANAGEMENT CO LP.
Institutional filer · behavioral pattern: Other. Summary pending.
AUM · $23.8B (13F)Positions · 235Turnover · — · Q1Filed · May 11, 2026
CONCENTRATION
—
Top 10 holdings
NEW BUYS
0
+$2.0B deployed
EXITS
0
No exits
SECTOR SHIFT
—
No prior quarter data
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q1 2026
FILED MAY 11, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q1 |
|---|---|---|---|---|---|---|
| 1 | NVDA | NVIDIA CORPORATION | 6.32M | $1.1B | 4.6% | +6% |
| 2 | ASND | ASCENDIS PHARMA A/S | 4.81M | $1.1B | 4.6% | −7% |
| 3 | FIX | COMFORT SYS USA INC | 621K | $856M | 3.6% | −7% |
| 4 | AAPL | APPLE INC | 3.13M | $795M | 3.3% | −4% |
| 5 | FTAI | FTAI AVIATION LTD | 2.85M | $698M | 2.9% | +21% |
| 6 | MSFT | MICROSOFT CORP | 1.65M | $611M | 2.6% | +2% |
| 7 | GOOGL | ALPHABET INC | 2.03M | $583M | 2.4% | −7% |
| 8 | HWM | HOWMET AEROSPACE INC | 2.29M | $528M | 2.2% | +3% |
| 9 | VRT | VERTIV HOLDINGS CO | 1.92M | $482M | 2.0% | −16% |
| 10 | AMZN | AMAZON COM INC | 2.28M | $475M | 2.0% | −2% |
§ 02 · SECTOR ALLOCATION
Where the money is
Sector data pending
§ 03 · THE WESTFIELD SIGNAL
AC read
WESTFIELD CAPITAL MANAGEMENT CO LP is a Other fund managing $23.8 billion in assets. The fund runs a broad portfolio of 235 positions.
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 FILINGS
Q1 2026
Steady book
+0 buys · −0 exits · 0 changed
Q4 2025
Steady book
+0 buys · −0 exits · 0 changed
Q3 2025
Steady book
+0 buys · −0 exits · 0 changed
Q2 2025
Steady book
+0 buys · −0 exits · 0 changed