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Westfield Capital Management Portfolio holdings
AUM
$30.6B
1-Year Est. Return
61.81%
This Fund
S&P 500
This Quarter
Est. Return
+32.34%
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
$30.6B
AUM Growth
+$6.78B
(+28%)
Cap. Flow
+$1.18B
Cap. Flow
% of AUM
3.85%
Top 10 Holdings %
Top 10 Hldgs %
29.23%
Holding
318
New
68
Increased
97
Reduced
105
Closed
40
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class A
GOOGL
|
+$620M |
| 2 |
NVIDIA
NVDA
|
+$362M |
| 3 |
Snowflake
SNOW
|
+$187M |
| 4 |
AXON
Axon Enterprise
AXON
|
+$179M |
| 5 |
Gilead Sciences
GILD
|
+$166M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Comfort Systems
FIX
|
+$482M |
| 2 |
Amazon
AMZN
|
+$356M |
| 3 |
Marvell Technology
MRVL
|
+$333M |
| 4 |
Bloom Energy
BE
|
+$303M |
| 5 |
Vertiv
VRT
|
+$275M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 33.44% |
| 2 | Industrials | 24.01% |
| 3 | Healthcare | 16.38% |
| 4 | Financials | 7.6% |
| 5 | Consumer Discretionary | 7.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
101
Packaging Corp of America
PKG
$21.1B
| $84.9M | 0.28% |
356,291
+52,520
| +17% | +$11.5M |
|
102
Birkenstock
BIRK
$5.61B
| $84.6M | 0.28% |
1,967,122
-371,657
| -16% | -$15M |
|
103
Palomar
PLMR
$3.59B
| $84.5M | 0.28% |
668,854
-185,262
| -22% | -$21.8M |
|
104
East-West Bancorp
EWBC
$17.9B
| $83.9M | 0.27% |
649,641
-156,315
| -19% | -$19.2M |
|
105
Red Rock Resorts
RRR
$3.38B
| $82.1M | 0.27% |
1,261,559
+33,401
| +3% | +$1.9M |
|
106
Wintrust Financial
WTFC
$10.4B
| $81M | 0.26% |
504,042
+48,820
| +11% | +$7.35M |
|
107
Clean Harbors
CLH
$16.7B
| $80.2M | 0.26% |
268,348
+7,256
| +3% | +$2.14M |
|
108
Casella Waste Systems
CWST
$5.95B
| $78.8M | 0.26% |
812,525
-9,967
| -1% | -$851K |
|
109
TTM Technologies
TTMI
$13.2B
| $77.8M | 0.25% |
+416,052
| New | +$67.1M |
|
110
Targa Resources
TRGP
$62.2B
| $77M | 0.25% |
287,128
-17,869
| -6% | -$4.59M |
|
|
FPS
111
Forgent Power Solutions
FPS
$8.15B
| $76.6M | 0.25% |
+1,370,928
| New | +$62.6M |
|
112
Alnylam Pharmaceuticals
ALNY
$35.6B
| $76M | 0.25% |
252,383
+6,844
| +3% | +$2.06M |
|
113
Vita Coco
COCO
$3.19B
| $75.3M | 0.25% |
1,137,802
-14,131
| -1% | -$954K |
|
114
Rubrik
RBRK
$19.4B
| $75.2M | 0.25% |
+937,308
| New | +$58.9M |
|
115
AutoZone
AZO
$48.7B
| $74.8M | 0.24% |
23,395
-4,968
| -18% | -$16.5M |
|
116
DoorDash
DASH
$91.7B
| $74.1M | 0.24% |
401,737
-42,184
| -10% | -$6.97M |
|
117
Wynn Resorts
WYNN
$9.43B
| $73.9M | 0.24% |
761,352
+21,339
| +3% | +$2.2M |
|
118
Idexx Laboratories
IDXX
$42.2B
| $73.7M | 0.24% |
139,925
+7,065
| +5% | +$3.96M |
|
119
Sprouts Farmers Market
SFM
$7.59B
| $73.3M | 0.24% |
+866,638
| New | +$70.1M |
|
120
Praxis Precision Medicines
PRAX
$9.82B
| $73.3M | 0.24% |
218,898
+218,236
| +32,966% | +$69.1M |
|
121
Salesforce
CRM
$213B
| $73.2M | 0.24% |
467,006
+195,043
| +72% | +$34.3M |
|
122
Primoris Services
PRIM
$4.01B
| $73.1M | 0.24% |
737,493
-5,776
| -0.8% | -$759K |
|
|
NUVL
123
DELISTED
Nuvalent
NUVL
| $72.3M | 0.24% |
+585,583
| New | +$63M |
|
124
Dycom Industries
DY
$9.06B
| $71.8M | 0.23% |
+141,978
| New | +$62.1M |
|
125
StepStone Group
STEP
$4.19B
| $71.5M | 0.23% |
1,729,424
+551,453
| +47% | +$27.3M |
|
Similar funds
KAS
KK
FAM
GMC
Westfield Capital Management's Q2 2026 Portfolio in Review
As of Q2 2026, Westfield Capital Management held 318 positions worth $30.6B, up 28% from $23.8B the previous quarter. Its ten largest holdings account for 29% of the portfolio.
Westfield Capital Management deployed $1.18B of net new capital in Q2 2026, opening 68 new positions and adding to 97 existing holdings. Its largest new stake was Carpenter Technology: 314,082 shares worth $194M.
By sector, the portfolio is most concentrated in Technology at 33% of assets, up from 28% a quarter earlier, followed by Industrials and Healthcare.
On the sell side, the largest reduction was Comfort Systems, an estimated $482M trimmed.
- Westfield Capital Management's largest Q2 2026 buy was Carpenter Technology: 314,082 shares worth $194M.
- Westfield Capital Management added most to Alphabet (Google) Class A in Q2 2026, an estimated $620M increase.
- Westfield Capital Management's biggest Q2 2026 reduction was Comfort Systems, cutting an estimated $482M.
- Westfield Capital Management fully exited Kratos Defense & Security Solutions in Q2 2026, selling an estimated $110M.
- Westfield Capital Management's ten largest holdings make up 29% of its $30.6B portfolio in Q2 2026.
- Westfield Capital Management opened 68 new positions and closed 40 in Q2 2026.
- Westfield Capital Management's portfolio value rose 28% quarter-over-quarter to $30.6B.
Based on Westfield Capital Management's 13F filing for Q2 2026, filed 12 Aug 2026.