WESTFIELD CAPITAL MANAGEMENT CO LP
CIK 1177719
13F filing for Q2 2026・No. 286
- Holdings
- US$30.61B
- Quarter change
- +US$6.78B
- Entries
- 278
- Net bought (estimate)
- +US$2.4B
The quarter change is the holdings' value against the quarter before, price moves included — not what was bought or sold; each institution's page estimates that.
Net bought (estimate)
Each stock's change in shares at the quarter-end price, added up: a new position counts as bought, one sold out as sold, shares held long only. Splits are compared split-adjusted; corporate actions under a new CUSIP are not estimated. An estimate from the filings, not actual trades.
- New 69
- Sold out 41
- Cut 102
- Added 99
- Corporate actions 0
- Unchanged 8
Largest holdings
278 stocks worth US$30.61B, options and bonds left out.
| Stock | This quarter | Shares | Value | Weight |
|---|---|---|---|---|
| NVDANvidiaCOM | Added | 8,079,926 | US$1.62B | 5.28% |
| GOOGLAlphabetCAP STK CL A | Added | 3,749,074 | US$1.34B | 4.38% |
| ASCENDIS PHARMA A/SORD SHS | New | 4,798,267 | US$1.28B | 4.18% |
| AXON ENTERPRISE INCCOM | Added | 1,491,490 | US$836.14M | 2.73% |
| FTAIFTAI AVIATION LTDSHS | Added | 2,937,228 | US$794.61M | 2.60% |
| AAPLAppleCOM | Cut | 2,573,774 | US$744.75M | 2.43% |
| FIXCOMFORT SYS USA INCCOM | Cut | 355,433 | US$704.45M | 2.30% |
| AVGOBroadcomCOM | Added | 1,556,522 | US$587.98M | 1.92% |
| MSFTMicrosoftCOM | Cut | 1,414,294 | US$527.56M | 1.72% |
| HWMHOWMET AEROSPACE INCCOM | Cut | 1,921,476 | US$516.61M | 1.69% |
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Filings
The quarter's original 13F filings (SEC).
- 13F-HRFiled August 12, 2026SEC ↗
13F covers long positions in US-listed securities only; the data is SEC's, filed within 45 days of the quarter's end.