WESTFIELD CAPITAL MANAGEMENT CO LP

CIK
1177719
City
BOSTON
State / Country
MA

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%

Holdings in NET

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Report Date Value (USD) Shares
2026-03-31 $111,746,728 541,566