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ACM

Atika Capital Management Portfolio holdings

AUM $796M
1-Year Est. Return 167.57%
This Fund
S&P 500
This Quarter Est. Return
+35.86%
1 Year Est. Return
+167.57%
3 Year Est. Return
+553.47%
5 Year Est. Return
+1,283.26%
10 Year Est. Return
+44,203.78%
AUM
$1,000M
AUM Growth
+$289M
Cap. Flow
+$56.5M
Cap. Flow %
5.65%
Top 10 Hldgs %
49.08%
Holding
82
New
20
Increased
25
Reduced
15
Closed
19

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$21.9M
2
AMZN icon
Amazon
AMZN
+$16.8M
3
CEG icon
Constellation Energy
CEG
+$14.2M
4
VRT icon
Vertiv
VRT
+$12.3M
5
BWXT icon
BWX Technologies
BWXT
+$12M

Top Sells

Rank Stock Value
1
TARS icon
Tarsus Pharmaceuticals
TARS
+$7.42M
2
INSM icon
Insmed
INSM
+$7.32M
3
EMBJ
Embraer S.A. ADS
EMBJ
+$6.89M
4
TEVA icon
Teva Pharmaceuticals
TEVA
+$6.72M
5
SHW icon
Sherwin-Williams
SHW
+$5.09M

Sector Composition

Rank Sector Weight
1 Healthcare 19.3%
2 Technology 18.31%
3 Industrials 16.7%
4 Consumer Discretionary 14.79%
5 Communication Services 11.68%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SLNO
76
CALL
DELISTED
Soleno Therapeutics
SLNO
– –
-650
Closed -$4.64M
TARS icon
77
Tarsus Pharmaceuticals
TARS
$2.86B
– –
-144,400
Closed -$7.42M
TEVA icon
78
Teva Pharmaceuticals
TEVA
$40.9B
– –
-436,900
Closed -$6.72M
TSLA icon
79
PUT
Tesla
TSLA
$1.3T
– –
-300
Closed -$7.77M
VMC icon
80
Vulcan Materials
VMC
$37B
– –
-4,800
Closed -$1.12M
XENE icon
81
Xenon Pharmaceuticals
XENE
$6.1B
– –
-24,000
Closed -$805K
GAP
82
The Gap Inc
GAP
$7.39B
– –
-213,700
Closed -$4.4M
1 2 3
4

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LSA
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Atika Capital Management's Q2 2025 Portfolio in Review

As of Q2 2025, Atika Capital Management held 82 positions worth $1,000M, up 41% from $711M the previous quarter. Its ten largest holdings account for 49% of the portfolio.

Atika Capital Management deployed $56.5M of net new capital in Q2 2025, opening 20 new positions and adding to 25 existing holdings. Its largest new stake was Roblox: 109,000 shares worth $11.5M.

By sector, the portfolio is most concentrated in Healthcare at 19% of assets, down from 27% a quarter earlier, followed by Technology and Industrials.

On the sell side, the largest reduction was Netflix, an estimated $4.75M trimmed.

  • Atika Capital Management's largest Q2 2025 buy was Roblox: 109,000 shares worth $11.5M.
  • Atika Capital Management added most to Microsoft in Q2 2025, an estimated $21.9M increase.
  • Atika Capital Management's biggest Q2 2025 reduction was Netflix, cutting an estimated $4.75M.
  • Atika Capital Management fully exited Tarsus Pharmaceuticals in Q2 2025, selling an estimated $7.42M.
  • Atika Capital Management's ten largest holdings make up 49% of its $1,000M portfolio in Q2 2025.
  • Atika Capital Management opened 20 new positions and closed 19 in Q2 2025.
  • Atika Capital Management's portfolio value rose 41% quarter-over-quarter to $1,000M.

Based on Atika Capital Management's 13F filing for Q2 2025, filed 13 Aug 2025.