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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

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
TBBB icon
51
BBB Foods
TBBB
$4.9B
$4.48M 0.45%
161,544
-21,283
-12% -$599K
ROKU icon
52
Roku
ROKU
$22.6B
$3.92M 0.39%
44,600
-27,600
-38% -$1.93M
NBIS
53
Nebius Group N.V.
NBIS
$47.3B
$3.85M 0.38%
+69,500
New +$2.39M
ASND icon
54
Ascendis Pharma A/S
ASND
$16.6B
$2.83M 0.28%
16,400
-18,800
-53% -$3.06M
FND icon
55
CALL
Floor & Decor
FND
$6.57B
$2.28M 0.23%
+300
New +$22.3K
TSM icon
56
TSMC
TSM
$2.16T
$2.26M 0.23%
+10,000
New +$1.85M
HNGE
57
Hinge Health
HNGE
$6.88B
$2.26M 0.23%
+43,700
New +$1.77M
WBA
58
PUT
DELISTED
Walgreens Boots Alliance
WBA
$1.72M 0.17%
1,500
NOVT icon
59
Novanta
NOVT
$5.96B
$1.37M 0.14%
+10,600
New +$1.29M
WRBY icon
60
Warby Parker
WRBY
$3.27B
$982K 0.1%
+44,800
New +$828K
ECHO
61
EchoStar
ECHO
$26.1B
$670K 0.07%
24,200
-179,100
-88% -$3.93M
CAI
62
Caris Life Sciences
CAI
$6.08B
$668K 0.07%
+25,000
New +$674K
STAA icon
63
STAAR Surgical
STAA
$1.18B
$275K 0.03%
+16,400
New +$289K
CHKP icon
64
Check Point Software Technologies
CHKP
$12.9B
-20,000
Closed -$4.56M
CLS icon
65
CALL
Celestica
CLS
$36B
-100
Closed -$788K
DOCS icon
66
CALL
Doximity
DOCS
$5.4B
-500
Closed -$2.9M
EMBJ
67
Embraer S.A. ADS
EMBJ
$12.9B
-149,100
Closed -$6.89M
INSM icon
68
Insmed
INSM
$28.1B
-96,000
Closed -$7.32M
IWM icon
69
CALL
iShares Russell 2000 ETF
IWM
$82.9B
-1,500
Closed -$29.9M
LNTH icon
70
Lantheus
LNTH
$6.6B
-45,100
Closed -$4.4M
LNTH icon
71
PUT
Lantheus
LNTH
$6.6B
-750
Closed -$7.32M
MU icon
72
CALL
Micron Technology
MU
$987B
-400
Closed -$3.48M
RXST icon
73
CALL
RxSight
RXST
$251M
-500
Closed -$1.26M
SFM icon
74
Sprouts Farmers Market
SFM
$8.17B
-4,675
Closed -$714K
SHW icon
75
Sherwin-Williams
SHW
$89.7B
-14,581
Closed -$5.09M

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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.