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Westfield Capital Management

Westfield Capital Management Portfolio holdings

AUM $30.6B
1-Year Est. Return 61.81%
This Fund
S&P 500
This Quarter Est. Return
+13.49%
1 Year Est. Return
+61.81%
3 Year Est. Return
+195.36%
5 Year Est. Return
+240.54%
10 Year Est. Return
+1,285%
AUM
$23.8B
AUM Growth
-$10.9M
Cap. Flow
-$1.73B
Cap. Flow %
-7.25%
Top 10 Hldgs %
30.48%
Holding
282
New
43
Increased
80
Reduced
99
Closed
47

Top Buys

Rank Stock Value
1
MRVL icon
Marvell Technology
MRVL
+$192M
2
PLTR icon
Palantir
PLTR
+$97.1M
3
KKR icon
KKR & Co
KKR
+$95.5M
4
BLD
TopBuild
BLD
+$89.8M
5
ADMA icon
ADMA Biologics
ADMA
+$87.5M

Top Sells

Rank Stock Value
1
NVDA icon
NVIDIA
NVDA
+$181M
2
CRM icon
Salesforce
CRM
+$177M
3
FN icon
Fabrinet
FN
+$165M
4
BMI icon
Badger Meter
BMI
+$150M
5
TXRH icon
Texas Roadhouse
TXRH
+$132M

Sector Composition

Rank Sector Weight
1 Technology 31.27%
2 Industrials 21.02%
3 Healthcare 16.43%
4 Financials 10.03%
5 Consumer Discretionary 9.86%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FN icon
126
Fabrinet
FN
$15.7B
$59.4M 0.25%
163,002
-500,308
-75% -$165M
TWLO icon
127
Twilio
TWLO
$35.1B
$59.2M 0.25%
591,367
-215,422
-27% -$24.3M
SPOT icon
128
Spotify
SPOT
$113B
$58.6M 0.25%
84,006
-4,925
-6% -$3.44M
WGS icon
129
GeneDx Holdings
WGS
$2.69B
$58.6M 0.25%
544,094
-45,094
-8% -$4.91M
FTI icon
130
TechnipFMC
FTI
$29.7B
$58.4M 0.25%
1,480,110
+4,169
+0.3% +$153K
JBL icon
131
Jabil
JBL
$32.6B
$57.8M 0.24%
+266,147
New +$58M
TTMI icon
132
TTM Technologies
TTMI
$12.8B
$57.3M 0.24%
+994,282
New +$46.2M
CLH icon
133
Clean Harbors
CLH
$16.6B
$56.6M 0.24%
243,582
+51,323
+27% +$12.2M
CSX icon
134
CSX Corp
CSX
$95.9B
$56.6M 0.24%
1,592,570
-80,485
-5% -$2.75M
MDB icon
135
MongoDB
MDB
$32.7B
$56.3M 0.24%
181,314
-143,919
-44% -$37M
IRTC icon
136
iRhythm Holdings
IRTC
$3.93B
$55.7M 0.23%
323,980
+33,410
+11% +$5.31M
MTSI icon
137
MACOM Technology Solutions
MTSI
$20.8B
$54.3M 0.23%
436,496
-272,937
-38% -$36M
IMAX icon
138
IMAX
IMAX
$2.89B
$53.1M 0.22%
+1,622,625
New +$46M
EAT icon
139
Brinker International
EAT
$10.3B
$52.7M 0.22%
416,056
-820,527
-66% -$128M
BURL icon
140
Burlington
BURL
$19.8B
$52.4M 0.22%
205,895
-7,749
-4% -$2.1M
TLN
141
Talen Energy Corp
TLN
$14.7B
$52.4M 0.22%
123,078
-63,480
-34% -$22.9M
AVNT icon
142
Avient
AVNT
$4.11B
$51.7M 0.22%
1,569,226
+9,124
+0.6% +$317K
TEAM icon
143
Atlassian
TEAM
$42.6B
$51.5M 0.22%
322,438
+116,470
+57% +$21.1M
AFRM icon
144
Affirm
AFRM
$25.6B
$51.3M 0.22%
701,607
+2,828
+0.4% +$215K
LSCC icon
145
Lattice Semiconductor
LSCC
$16.9B
$51.1M 0.21%
+696,706
New +$42.4M
STEP icon
146
StepStone Group
STEP
$4.1B
$50.9M 0.21%
+778,728
New +$47.5M
WCN
147
Waste Connections
WCN
$42B
$50.8M 0.21%
288,730
-46,289
-14% -$8.42M
FOUR icon
148
Shift4
FOUR
$3.65B
$50.6M 0.21%
653,828
-22,400
-3% -$2.08M
RMBS icon
149
Rambus
RMBS
$9.76B
$50.5M 0.21%
484,465
-477,954
-50% -$36.8M
FICO icon
150
Fair Isaac
FICO
$24.5B
$48.6M 0.2%
32,468
-9,836
-23% -$14.8M
4 5
6
7 8

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Westfield Capital Management's Q3 2025 Portfolio in Review

As of Q3 2025, Westfield Capital Management held 282 positions worth $23.8B, down 0.05% from $23.8B the previous quarter. Its ten largest holdings account for 30% of the portfolio.

Westfield Capital Management withdrew a net $1.73B in Q3 2025, closing 47 positions and reducing 99 holdings. Its most notable exit was Salesforce, an estimated $177M position sold in full.

By sector, the portfolio is most concentrated in Technology at 31% of assets, up from 31% a quarter earlier, followed by Industrials and Healthcare.

Against the trend, Westfield Capital Management opened a new position in Marvell Technology worth $220M.

  • Westfield Capital Management's largest Q3 2025 buy was Marvell Technology: 2,611,958 shares worth $220M.
  • Westfield Capital Management added most to Palantir in Q3 2025, an estimated $97.1M increase.
  • Westfield Capital Management's biggest Q3 2025 reduction was NVIDIA, cutting an estimated $181M.
  • Westfield Capital Management fully exited Salesforce in Q3 2025, selling an estimated $177M.
  • Westfield Capital Management's ten largest holdings make up 30% of its $23.8B portfolio in Q3 2025.
  • Westfield Capital Management opened 43 new positions and closed 47 in Q3 2025.
  • Westfield Capital Management's portfolio value fell 0.05% quarter-over-quarter to $23.8B.

Based on Westfield Capital Management's 13F filing for Q3 2025, filed 12 Nov 2025.