Latest WESTFIELD CAPITAL MANAGEMENT CO LP Stock Portfolio

WESTFIELD CAPITAL MANAGEMENT CO LP Performance:

2025 Q3: 5.43%YTD: 9.12%2024: 18.69%

Performance for 2025 Q3 is 5.43%, and YTD is 9.12%, and 2024 is 18.69%.

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

In it's latest 13F Holdings report, WESTFIELD CAPITAL MANAGEMENT CO LP reported an equity portfolio of $23.8 Billions as of 30 Sep, 2025.

The top stock holdings of WESTFIELD CAPITAL MANAGEMENT CO LP are NVDA, , MSFT. The fund has invested 5.1% of it's portfolio in NVIDIA CORPORATION and 4.4% of portfolio in ASCENDIS PHARMA A/S.

The fund managers got completely rid off SALESFORCE INC (CRM), BADGER METER INC (BMI) and TEXAS ROADHOUSE INC (TXRH) stocks. They significantly reduced their stock positions in GE HEALTHCARE TECHNOLOGIES I, ROLLINS INC (ROL) and GARTNER INC (IT). WESTFIELD CAPITAL MANAGEMENT CO LP opened new stock positions in MARVELL TECHNOLOGY INC (MRVL), BLOOM ENERGY CORP (BE) and KARMAN HLDGS INC. The fund showed a lot of confidence in some stocks as they added substantially to PALANTIR TECHNOLOGIES INC (PLTR), TRANE TECHNOLOGIES PLC (TT) and ALKAMI TECHNOLOGY INC (ALKT).

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 5.43% in the last quarter. In trailing 12 months, it's portfolio return was 14.42%.

New Buys

Ticker	$ Bought
marvell technology inc	219,587,000
bloom energy corp	141,679,000
karman hldgs inc	102,927,000
kratos defense & sec solutio	91,901,400
topbuild corp	87,954,800
kkr & co inc	87,442,700
palo alto networks inc	75,412,400
adma biologics inc	74,865,700

New stocks bought by WESTFIELD CAPITAL MANAGEMENT CO LP

Additions

Ticker	% Inc.
palantir technologies inc	8,531
trane technologies plc	1,075
alkami technology inc	159
commvault sys inc	135
calix inc	134
boston scientific corp	106
coherent corp	90.25
xpo inc	84.95

Additions to existing portfolio by WESTFIELD CAPITAL MANAGEMENT CO LP

Reductions

Ticker	% Reduced
ge healthcare technologies i	-99.32
maplebear inc	-96.53
rollins inc	-94.64
gartner inc	-93.25
check point software tech lt	-85.35
fabrinet	-75.43
danaher corporation	-69.26
ionis pharmaceuticals inc	-67.65

WESTFIELD CAPITAL MANAGEMENT CO LP reduced stake in above stock

Sold off

Ticker	$ Sold
mueller wtr prods inc	-52,093,400
axalta coating sys ltd	-53,697,600
lantheus hldgs inc	-122,387,000
kemper corp	-84,560,700
moonlake immunotherapeutics	-59,442,500
globant s a	-99,971,800
copart inc	-47,495,000
western digital corp	-55,174,500

WESTFIELD CAPITAL MANAGEMENT CO LP got rid off the above stocks

Sector Distribution

WESTFIELD CAPITAL MANAGEMENT CO LP has about 28.8% of it's holdings in Technology sector.

Sector	%
Technology	28.8
Industrials	19.8
Others	12
Healthcare	10.2
Financial Services	9.1
Communication Services	8.6
Consumer Cyclical	8.4

Market Cap. Distribution

WESTFIELD CAPITAL MANAGEMENT CO LP has about 65.7% of it's portfolio invested in the large-cap and mega-cap stocks.

Category	%
LARGE-CAP	38.5
MEGA-CAP	27.2
MID-CAP	19.9
UNALLOCATED	11.8
SMALL-CAP	2.6

Stocks belong to which Index?

About 63.3% of the stocks held by WESTFIELD CAPITAL MANAGEMENT CO LP either belong to S&P 500 or RUSSELL 2000 index.

Index	%
S&P 500	44.9
Others	36.7
RUSSELL 2000	18.4

Top 5 Winners (%)		%
APP	applovin corp	105.3 %
CIEN	ciena corp	79.1 %
MRUS	merus n v	73.2 %
RIOT	riot platforms inc	68.4 %
IONS	ionis pharmaceuticals inc	65.6 %

Top 5 Winners ($)		$
FIX	comfort sys usa inc	270.6 M
NVDA	nvidia corporation	215.7 M
AAPL	apple inc	172.8 M
GOOG	alphabet inc	171.6 M
FTAI	ftai aviation ltd	99.3 M

Top 5 Losers (%)		%
IT	gartner inc	-35.0 %
BRP	the baldwin insurance grp in	-34.1 %
PRCT	procept biorobotics corp	-33.3 %
EAT	brinker intl inc	-29.8 %
KD	kyndryl hldgs inc	-28.4 %

Top 5 Losers ($)		$
AXON	axon enterprise inc	-87.1 M
EAT	brinker intl inc	-66.3 M
TDG	transdigm group inc	-58.8 M
DXCM	dexcom inc	-47.6 M
NFLX	netflix inc	-35.3 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 235 stocks in it's portfolio. About 30.5% of the portfolio is in top 10 stocks. AXON proved to be the most loss making stock for the portfolio. FIX was the most profitable stock for WESTFIELD CAPITAL MANAGEMENT CO LP last quarter.

Last Reported on: 12 Nov, 2025

Ticker	Namesorted ascending	% Portfolio	Shares Held	$ Value	Type	% Change
AAPL	apple inc	3.56	3,334,540	849,075,000	reduced	-4.57

ABBV	abbvie inc	0.01	7,928	1,835,650	new

ABC	cencora inc	0.43	325,660	101,779,000	added	21.17

ADMA	adma biologics inc	0.31	5,106,800	74,865,700	new

AFRM	affirm hldgs inc	0.22	701,607	51,273,400	added	0.4

AIG	american intl group inc	0.00	0.00	0.00	sold off	-100

AIT	applied indl technologies in	0.26	234,734	61,277,300	added	6.39

AJG	gallagher arthur j & co	0.35	267,709	82,920,300	reduced	-16.76

ALKT	alkami technology inc	0.32	3,095,060	76,881,200	added	159

ALNY	alnylam pharmaceuticals inc	0.17	87,908	40,085,800	reduced	-52.97

AMAT	applied matls inc	0.00	0.00	0.00	sold off	-100

AME	ametek inc	0.28	358,660	67,428,000	reduced	-9.3

AMP	ameriprise finl inc	0.03	14,691	7,216,950	reduced	-15.94

AMZN	amazon com inc	2.34	2,541,730	558,087,000	reduced	-18.02

ANF	abercrombie & fitch co	0.00	0.00	0.00	sold off	-100

APP	applovin corp	0.00	1,284	922,618	unchanged	0.00

ARES	ares management corporation	0.69	1,027,590	164,301,000	reduced	-4.74

AVGO	broadcom inc	1.61	1,166,360	384,795,000	reduced	-12.71

AVNT	avient corporation	0.22	1,569,230	51,706,000	added	0.58

AVTR	avantor inc	0.00	0.00	0.00	sold off	-100