13F filer

Westfield Capital Management

As of Jun 30, 2026 Filed Aug 12, 2026 CIK 1177719 SEC filings ↗
13F Value
$30.61B
Positions
278
Top Position
NVDA5.3%
Top 5
19.2%

Latest filing changes

vs Mar 31, 2026
1 GOOGL Alphabet Class A +85.0%+$615.5M
2 NVDA NVIDIA +27.9%+$352.7M
3 SNOW Snowflake +141.6%+$259.0M
4 AXON Axon Enterprise +40.2%+$239.6M
5 AMD Advanced Micro Devices >999%+$231.2M
Holdings278
# Trend (4Q)
1 NVDA 5.3% $1.62B +27.9% 8.08M 4.6% Common Stock
2 GOOGL
Filing details
  • 02079K305 Jun 30, 2026 3,749,074 reported quantity $1,339,806,415 reported value
4.4% $1.34B +85.0% 3.75M 2.4% Common Stock
3 ASND
Filing details
  • K08588103 Jun 30, 2026 4,798,267 reported quantity $1,279,793,795 reported value
4.2% $1.28B — 4.80M 4.6% — Common Stock
4 AXON 2.7% $836.1M +40.2% 1.49M 1.9% Common Stock
5 FTAI 2.6% $794.6M +3.1% 2.94M 2.9% Common Stock
6 AAPL 2.4% $744.7M -17.9% 2.57M 3.3% Common Stock
7 FIX 2.3% $704.5M -42.8% 355.4K 3.6% Common Stock
8 AVGO 1.9% $588.0M +25.8% 1.56M 1.6% Common Stock
9 MSFT 1.7% $527.6M -14.3% 1.41M 2.6% Common Stock
10 HWM 1.7% $516.6M -16.1% 1.92M 2.2% Common Stock
11 LLY 1.6% $499.8M +14.3% 416.7K 1.4% Common Stock
12 SNOW 1.4% $441.9M +141.6% 1.74M 0.5% Common Stock
13 MKSI 1.3% $413.0M -11.3% 928.6K 1.0% Common Stock
14 META 1.2% $381.6M +28.6% 677.4K 1.3% Common Stock
15 VRT 1.2% $353.0M -45.1% 1.05M 2.0% Common Stock
16 GEV 0.9% $283.5M +21.1% 241.3K 0.7% Common Stock
17 MU 0.9% $263.4M +127.2% 228.2K 0.1% Common Stock
18 V 0.9% $261.6M +67.0% 762.4K 0.6% Common Stock
19 APG 0.9% $260.6M +32.8% 6.15M 0.8% Common Stock
20 TPR 0.8% $248.3M -22.8% 1.70M 1.3% Common Stock
Change compares with the prior filing. Prior % is the share of the portfolio in that filing. Trend shows the quantity held in each of the last four filings: green rose, red fell, grey unchanged.
Exited in Latest Filing40
# Holding Prior % Prior Value Change Prior Quantity Trend (4Q) Type
Compared with the immediately prior published filing (Mar 31, 2026). Prior values are shown for context and are not included in current totals.