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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
1
Amazon
AMZN
$2.5T
$87.4M 8.74%
398,249
+85,000
+27% +$16.8M
VRT icon
2
Vertiv
VRT
$112B
$78.7M 7.87%
613,100
+126,000
+26% +$12.3M
MSFT icon
3
Microsoft
MSFT
$2.84T
$78.6M 7.86%
158,000
+50,500
+47% +$21.9M
SPOT icon
4
Spotify
SPOT
$99.2B
$48M 4.8%
62,520
+720
+1% +$462K
MLM icon
5
Martin Marietta Materials
MLM
$33.6B
$39.8M 3.98%
72,533
+16,900
+30% +$8.93M
GKOS icon
6
Glaukos
GKOS
$9.02B
$33M 3.3%
319,500
+56,000
+21% +$5.25M
ISRG icon
7
Intuitive Surgical
ISRG
$121B
$32.4M 3.24%
59,600
+4,500
+8% +$2.35M
LLY icon
8
Eli Lilly
LLY
$1.07T
$32M 3.2%
41,100
+8,000
+24% +$6.22M
CEG icon
9
Constellation Energy
CEG
$98B
$30.6M 3.06%
94,800
+53,500
+130% +$14.2M
BWXT icon
10
BWX Technologies
BWXT
$16B
$30.3M 3.03%
210,400
+103,000
+96% +$12M
META icon
11
Meta Platforms (Facebook)
META
$1.51T
$28M 2.8%
38,000
+18,999
+100% +$11.7M
ANET icon
12
Arista Networks
ANET
$219B
$26.8M 2.68%
261,608
+47,620
+22% +$4.12M
MELI icon
13
Mercado Libre
MELI
$91.3B
$26.1M 2.61%
10,000
+2,071
+26% +$4.84M
VST icon
14
Vistra
VST
$55.1B
$24M 2.4%
124,000
+8,000
+7% +$1.18M
GEV icon
15
GE Vernova
GEV
$270B
$22.5M 2.25%
42,550
+5,100
+14% +$2.12M
INSP icon
16
Inspire Medical Systems
INSP
$1.42B
$21M 2.1%
161,900
+1,300
+0.8% +$189K
HOOD icon
17
Robinhood
HOOD
$85.2B
$20.4M 2.04%
218,100
+75,100
+53% +$4.44M
VRNA
18
DELISTED
Verona Pharma
VRNA
$20.1M 2.01%
212,500
+4,366
+2% +$323K
TLN
19
Talen Energy Corp
TLN
$17.2B
$17.4M 1.74%
59,800
-12,360
-17% -$2.93M
DASH icon
20
DoorDash
DASH
$75.3B
$16.4M 1.64%
66,400
-16,385
-20% -$3.29M
NFLX icon
21
Netflix
NFLX
$292B
$16.1M 1.61%
120,000
-42,000
-26% -$4.75M
CYBR
22
DELISTED
CyberArk
CYBR
$15.8M 1.58%
38,855
-3,845
-9% -$1.4M
NET icon
23
Cloudflare
NET
$93B
$13.5M 1.35%
68,801
+32,801
+91% +$4.76M
ECHO
24
CALL
EchoStar
ECHO
$25.5B
$12.1M 1.21%
+4,370
New +$96K
RBLX icon
25
Roblox
RBLX
$34B
$11.5M 1.15%
+109,000
New +$8.56M
1
2 3 4

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ATS
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RIM
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ACM
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CAM
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Legacy Financial Group (Iowa)
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LSA
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GWA
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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.