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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
AMZN icon
26
CALL
Amazon
AMZN
$2.93T
$11M 1.1%
+500
New +$98.9K
APPF icon
27
AppFolio
APPF
$6.87B
$10.2M 1.02%
44,500
– –
SLNO
28
DELISTED
Soleno Therapeutics
SLNO
$10.1M 1.01%
120,500
+19,900
+20% +$1.49M
EYE icon
29
National Vision
EYE
$1.82B
$9.53M 0.95%
+414,200
New +$7.06M
UBER icon
30
CALL
Uber
UBER
$144B
$9.33M 0.93%
+1,000
New +$82.3K
NVDA icon
31
NVIDIA
NVDA
$5.33T
$9.29M 0.93%
58,800
+6,800
+13% +$856K
ALNY icon
32
Alnylam Pharmaceuticals
ALNY
$29.3B
$9.03M 0.9%
+27,700
New +$7.66M
DUOL icon
33
Duolingo
DUOL
$5.68B
$8.65M 0.87%
21,100
-2,200
-9% -$965K
ADBE icon
34
Adobe
ADBE
$102B
$8.63M 0.86%
22,298
+898
+4% +$346K
SN icon
35
SharkNinja
SN
$25.5B
$8.46M 0.85%
+85,500
New +$7.39M
MTZ icon
36
MasTec
MTZ
$21B
$8.39M 0.84%
+49,200
New +$7.09M
GE icon
37
GE Aerospace
GE
$390B
$8.09M 0.81%
31,441
-17,059
-35% -$3.74M
SHOP icon
38
Shopify
SHOP
$191B
$8.01M 0.8%
69,400
+19,633
+39% +$1.96M
NTRA icon
39
Natera
NTRA
$38.1B
$7.86M 0.79%
46,497
-25,166
-35% -$3.92M
TW icon
40
Tradeweb Markets
TW
$21.7B
$7.32M 0.73%
50,000
+12,744
+34% +$1.78M
WWD icon
41
Woodward
WWD
$21.6B
$7.01M 0.7%
+28,600
New +$5.85M
KYMR icon
42
Kymera Therapeutics
KYMR
$8.64B
$6.4M 0.64%
+146,600
New +$5.05M
FERG icon
43
Ferguson
FERG
$49.1B
$6.38M 0.64%
29,300
– –
MDT icon
44
CALL
Medtronic
MDT
$110B
$6.28M 0.63%
+720
New +$61.1K
CW icon
45
Curtiss-Wright
CW
$26.8B
$5.62M 0.56%
+11,500
New +$4.54M
SPNT icon
46
SiriusPoint
SPNT
$2.75B
$5.49M 0.55%
269,300
-150,700
-36% -$2.77M
AXSM icon
47
Axsome Therapeutics
AXSM
$10.9B
$4.81M 0.48%
46,121
-27,579
-37% -$2.92M
TKO icon
48
TKO Group
TKO
$13.8B
$4.77M 0.48%
26,200
-5,100
-16% -$819K
GH icon
49
Guardant Health
GH
$21.4B
$4.64M 0.46%
89,200
+3,700
+4% +$165K
RXST icon
50
RxSight
RXST
$245M
$4.61M 0.46%
354,907
-157,866
-31% -$2.37M
1
2
3 4

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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.