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Latest WESTFIELD CAPITAL MANAGEMENT CO LP Stock Portfolio

WESTFIELD CAPITAL MANAGEMENT CO LP Performance:
2025 Q4: -4.17%YTD: 6.59%2024: 18.36%
Performance for 2025 Q4 is -4.17%, and YTD is 6.59%, and 2024 is 18.36%.

About WESTFIELD CAPITAL MANAGEMENT CO LP and 13F Hedge Fund Stock Holdings

On 2026-02-11, the fund reported it's updated stock portfolio. In the 13F Holdings report, WESTFIELD CAPITAL MANAGEMENT CO LP reported an equity portfolio of $24 Billions as of 31 Dec, 2025.

The top stock holdings of WESTFIELD CAPITAL MANAGEMENT CO LP are NVDA, , AAPL. The fund has invested 4.6% of it's portfolio in NVIDIA CORPORATION and 4.6% of portfolio in ASCENDIS PHARMA A/S.

The fund managers got completely rid off MERUS N V (MRUS), INTERNATIONAL PAPER CO (IP) and GLAUKOS CORP (GKOS) stocks. They significantly reduced their stock positions in ICON PLC, STAG INDL INC (STAG) and TRANSDIGM GROUP INC (TDG). WESTFIELD CAPITAL MANAGEMENT CO LP opened new stock positions in ABIVAX SA, API GROUP CORP (APG) and DUTCH BROS INC (BROS). The fund showed a lot of confidence in some stocks as they added substantially to DANAHER CORPORATION (DHR), ABBVIE INC (ABBV) and F5 INC (FFIV).

WESTFIELD CAPITAL MANAGEMENT CO LP Annual Return Estimates Vs S&P 500

Our best estimate is that WESTFIELD CAPITAL MANAGEMENT CO LP made a return of -4.17% in the last quarter. In trailing 12 months, it's portfolio return was 6.59%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
abivax sa136,199,000
api group corp132,125,000
dutch bros inc108,948,000
celsius hldgs inc70,632,400
legence corp69,437,600
garmin ltd68,105,600
adaptive biotechnologies cor65,942,200
zscaler inc63,159,100
New stocks bought by WESTFIELD CAPITAL MANAGEMENT CO LP

Additions

Ticker% Inc.
danaher corporation6,390
abbvie inc5,194
f5 inc1,634
ishares tr1,168
parker-hannifin corp706
trane technologies plc642
netflix inc592
servicenow inc468
Additions to existing portfolio by WESTFIELD CAPITAL MANAGEMENT CO LP

Reductions

Ticker% Reduced
icon plc-99.36
monday com ltd-97.99
stag indl inc-96.11
transdigm group inc-92.57
palantir technologies inc-74.51
roblox corp-61.19
formfactor inc-56.21
coherent corp-54.84
WESTFIELD CAPITAL MANAGEMENT CO LP reduced stake in above stock

Sold off

Ticker$ Sold
89bio inc-48,383,100
international paper co-108,638,000
merus n v-200,774,000
willscot hldgs corp-43,271,700
pinterest inc-65,088,600
procept biorobotics corp-70,314,500
northern oil & gas inc-47,095,600
riot platforms inc-25,691,000
WESTFIELD CAPITAL MANAGEMENT CO LP got rid off the above stocks

Sector Distribution

WESTFIELD CAPITAL MANAGEMENT CO LP has about 28.4% of it's holdings in Technology sector.

Sector%
Technology28.4
Industrials20.2
Healthcare11.4
Others11.2
Financial Services9.7
Consumer Cyclical8.6
Communication Services7.2
Energy1.2

Market Cap. Distribution

WESTFIELD CAPITAL MANAGEMENT CO LP has about 65.6% of it's portfolio invested in the large-cap and mega-cap stocks.

Category%
LARGE-CAP39
MEGA-CAP26.6
MID-CAP20.4
UNALLOCATED11.3
SMALL-CAP2.6

Stocks belong to which Index?

About 65.8% of the stocks held by WESTFIELD CAPITAL MANAGEMENT CO LP either belong to S&P 500 or RUSSELL 2000 index.

Index%
S&P 50045.9
Others34.2
RUSSELL 200019.9
Top 5 Winners (%)%
RVMD
revolution medicines inc
63.8 %
CIEN
ciena corp
60.5 %
SLV
ishares silver tr
52.0 %
COHR
coherent corp
51.8 %
rocket lab corp
43.6 %
Top 5 Winners ($)$
GOOG
alphabet inc
154.6 M
RVMD
revolution medicines inc
88.3 M
LLY
eli lilly & co
86.4 M
COHR
coherent corp
82.2 M
FIX
comfort sys usa inc
81.2 M
Top 5 Losers (%)%
NFLX
netflix inc
-87.1 %
NOW
servicenow inc
-74.7 %
legend biotech corp
-33.2 %
CVLT
commvault sys inc
-30.6 %
RBLX
roblox corp
-28.8 %
Top 5 Losers ($)$
NFLX
netflix inc
-1010.2 M
NOW
servicenow inc
-666.1 M
AXON
axon enterprise inc
-116.8 M
legend biotech corp
-66.6 M
CVLT
commvault sys inc
-58.4 M

WESTFIELD CAPITAL MANAGEMENT CO LP Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of WESTFIELD CAPITAL MANAGEMENT CO LP

WESTFIELD CAPITAL MANAGEMENT CO LP has 241 stocks in it's portfolio. About 29.7% of the portfolio is in top 10 stocks. NFLX proved to be the most loss making stock for the portfolio. GOOG was the most profitable stock for WESTFIELD CAPITAL MANAGEMENT CO LP last quarter.

Last Reported on: 11 Feb, 2026
TickerNamesorted ascending% PortfolioShares Held$ ValueType% ChangeOptions