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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
+4.97%
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
$24B
AUM Growth
+$172M
Cap. Flow
-$309M
Cap. Flow %
-1.29%
Top 10 Hldgs %
29.68%
Holding
274
New
39
Increased
117
Reduced
71
Closed
33

Top Buys

Rank Stock Value
1
APG icon
APi Group
APG
+$128M
2
ABVX
Abivax
ABVX
+$110M
3
AME icon
Ametek
AME
+$105M
4
BROS icon
Dutch Bros
BROS
+$101M
5
ABBV icon
AbbVie
ABBV
+$93.8M

Top Sells

Rank Stock Value
1
TDG icon
TransDigm Group
TDG
+$264M
2
MRUS
Merus
MRUS
+$201M
3
FIX icon
Comfort Systems
FIX
+$152M
4
COHR icon
Coherent
COHR
+$121M
5
MNDY icon
monday.com
MNDY
+$114M

Sector Composition

Rank Sector Weight
1 Technology 29.89%
2 Industrials 21.65%
3 Healthcare 18.09%
4 Financials 10.52%
5 Consumer Discretionary 9.76%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
GKOS icon
251
Glaukos
GKOS
$11B
-1,231,641
Closed -$100M
ICE icon
252
Intercontinental Exchange
ICE
$85B
-378,565
Closed -$63.8M
IP icon
253
International Paper
IP
$21.8B
-2,341,336
Closed -$109M
KD icon
254
Kyndryl
KD
$2.85B
-1,315,656
Closed -$39.5M
KNSL icon
255
Kinsale Capital Group
KNSL
$8.51B
-142,146
Closed -$60.4M
KR icon
256
Kroger
KR
$34.3B
-63,932
Closed -$4.31M
MRUS
257
DELISTED
Merus
MRUS
-2,132,489
Closed -$201M
NOG icon
258
Northern Oil and Gas
NOG
$2.57B
-1,899,017
Closed -$47.1M
NXPI icon
259
NXP Semiconductors
NXPI
$58.9B
-89,996
Closed -$20.5M
PINS icon
260
Pinterest
PINS
$13B
-2,023,270
Closed -$65.1M
PRCT icon
261
Procept Biorobotics
PRCT
$1.22B
-1,970,147
Closed -$70.3M
QURE icon
262
uniQure
QURE
$3.13B
-3,828
Closed -$223K
RH icon
263
RH
RH
$3.41B
-332,901
Closed -$67.6M
RIOT icon
264
Riot Platforms
RIOT
$7.63B
-1,350,027
Closed -$25.7M
SLNO
265
DELISTED
Soleno Therapeutics
SLNO
-899,157
Closed -$60.8M
SMCI icon
266
Super Micro Computer
SMCI
$24.3B
-359,439
Closed -$17.2M
SPOT icon
267
Spotify
SPOT
$101B
-84,006
Closed -$58.6M
TTMI icon
268
TTM Technologies
TTMI
$14.5B
-994,282
Closed -$57.3M
TWLO icon
269
Twilio
TWLO
$37.9B
-591,367
Closed -$59.2M
VEEV icon
270
Veeva Systems
VEEV
$39.2B
-217,754
Closed -$64.9M
WELL icon
271
Welltower
WELL
$166B
-32,189
Closed -$5.73M
WM icon
272
Waste Management
WM
$90.5B
-18,777
Closed -$4.15M
WSC icon
273
WillScot Mobile Mini Holdings
WSC
$4B
-2,049,820
Closed -$43.3M
BWIN
274
Baldwin Insurance Group
BWIN
$3B
-1,071,136
Closed -$30.2M

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Westfield Capital Management's Q4 2025 Portfolio in Review

As of Q4 2025, Westfield Capital Management held 274 positions worth $24B, up 0.72% from $23.8B the previous quarter. Its ten largest holdings account for 30% of the portfolio.

Westfield Capital Management's Q4 2025 filing shows 39 new, 117 increased, 71 reduced and 33 closed positions. Its largest new stake was APi Group: 3,453,355 shares worth $132M. The largest sale was TransDigm Group, an estimated $264M.

By sector, the portfolio is most concentrated in Technology at 30% of assets, down from 31% a quarter earlier, followed by Industrials and Healthcare.

  • Westfield Capital Management's largest Q4 2025 buy was APi Group: 3,453,355 shares worth $132M.
  • Westfield Capital Management added most to Ametek in Q4 2025, an estimated $105M increase.
  • Westfield Capital Management's biggest Q4 2025 reduction was TransDigm Group, cutting an estimated $264M.
  • Westfield Capital Management fully exited Merus in Q4 2025, selling an estimated $201M.
  • Westfield Capital Management's ten largest holdings make up 30% of its $24B portfolio in Q4 2025.
  • Westfield Capital Management opened 39 new positions and closed 33 in Q4 2025.
  • Westfield Capital Management's portfolio value rose 0.72% quarter-over-quarter to $24B.

Based on Westfield Capital Management's 13F filing for Q4 2025, filed 11 Feb 2026.