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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
+27.6%
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
$950M
AUM Growth
-$292M
Cap. Flow
-$566M
Cap. Flow %
-59.62%
Top 10 Hldgs %
46.71%
Holding
121
New
35
Increased
14
Reduced
21
Closed
44

Top Buys

Rank Stock Value
1
MDGL icon
Madrigal Pharmaceuticals
MDGL
+$17.4M
2
COGT icon
Cogent Biosciences
COGT
+$14.2M
3
TEVA icon
Teva Pharmaceuticals
TEVA
+$12.1M
4
GOOG icon
Alphabet (Google) Class C
GOOG
+$12.1M
5
HEI icon
HEICO Corp
HEI
+$8.31M

Top Sells

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$85.5M
2
AMZN icon
Amazon
AMZN
+$72.5M
3
SPOT icon
Spotify
SPOT
+$43.9M
4
MLM icon
Martin Marietta Materials
MLM
+$43.2M
5
ANET icon
Arista Networks
ANET
+$33.7M

Sector Composition

Rank Sector Weight
1 Healthcare 26.3%
2 Industrials 20.32%
3 Consumer Discretionary 9.92%
4 Technology 9.36%
5 Communication Services 5.34%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CW icon
51
Curtiss-Wright
CW
$25.5B
$5.45M 0.57%
9,882
-169
-2% -$94.3K
WRBY icon
52
Warby Parker
WRBY
$3.27B
$5.43M 0.57%
+248,971
New +$5.42M
MDLN
53
Medline Inc
MDLN
$30.9B
$4.95M 0.52%
+117,800
New +$4.97M
FND icon
54
CALL
Floor & Decor
FND
$6.68B
$4.87M 0.51%
800
– –
RIVN icon
55
CALL
Rivian
RIVN
$23.2B
$4.77M 0.5%
+2,420
New +$38.4K
TBBB icon
56
BBB Foods
TBBB
$4.92B
$4.75M 0.5%
142,282
-16,718
-11% -$500K
FIGR
57
Figure Technology Solutions
FIGR
$6.33B
$4.55M 0.48%
111,447
+57,447
+106% +$2.3M
BBWI icon
58
Bath & Body Works
BBWI
$4.1B
$4.52M 0.48%
+225,000
New +$4.97M
EEM icon
59
CALL
iShares MSCI Emerging Markets ETF
EEM
$29.5B
$4.46M 0.47%
+816
New +$44.4K
ASND icon
60
Ascendis Pharma A/S
ASND
$16.8B
$4.4M 0.46%
20,642
-1,518
-7% -$314K
RKLB icon
61
Rocket Lab Corp
RKLB
$51.8B
$4.33M 0.46%
+62,115
New +$3.56M
EOSE icon
62
CALL
Eos Energy Enterprises
EOSE
$1.51B
$4.26M 0.45%
+3,720
New +$53.5K
XENE icon
63
Xenon Pharmaceuticals
XENE
$6.12B
$4.15M 0.44%
92,506
+54,506
+143% +$2.29M
ALNY icon
64
Alnylam Pharmaceuticals
ALNY
$29.3B
$4.11M 0.43%
10,339
-11,867
-53% -$5.25M
DBVT
65
DBV Technologies
DBVT
$847M
$3.97M 0.42%
+206,881
New +$3.23M
KNSA icon
66
Kiniksa Pharmaceuticals
KNSA
$5.93B
$3.88M 0.41%
+93,970
New +$3.77M
IONS icon
67
Ionis Pharmaceuticals
IONS
$9.4B
$3.76M 0.4%
47,488
+25,988
+121% +$1.96M
ANF icon
68
Abercrombie & Fitch
ANF
$5B
$3.65M 0.38%
+29,000
New +$2.54M
RAPT
69
DELISTED
RAPT Therapeutics
RAPT
$3.19M 0.34%
+94,245
New +$2.93M
AAOI icon
70
Applied Optoelectronics
AAOI
$11.5B
$3.06M 0.32%
+87,657
New +$2.62M
RKT icon
71
Rocket Companies
RKT
$38.9B
$2.52M 0.27%
+130,000
New +$2.32M
MRNA icon
72
PUT
Moderna
MRNA
$23.6B
$2.24M 0.24%
+760
New +$20.6K
U icon
73
CALL
Unity
U
$18.9B
$2.21M 0.23%
500
-800
-62% -$32.6K
CECO icon
74
Ceco Environmental
CECO
$4.14B
$1.78M 0.19%
+29,804
New +$1.59M
CDTX
75
CALL
DELISTED
Cidara Therapeutics
CDTX
$1.08M 0.11%
49
– –
1 2
3
4 5

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Atika Capital Management's Q4 2025 Portfolio in Review

As of Q4 2025, Atika Capital Management held 121 positions worth $950M, down 24% from $1.24B the previous quarter. Its ten largest holdings account for 47% of the portfolio.

Atika Capital Management withdrew a net $566M in Q4 2025, closing 44 positions and reducing 21 holdings. Its most notable exit was Microsoft, an estimated $85.5M position sold in full.

By sector, the portfolio is most concentrated in Healthcare at 26% of assets, up from 17% a quarter earlier, followed by Industrials and Consumer Discretionary.

Against the trend, Atika Capital Management opened a new position in Madrigal Pharmaceuticals worth $19.8M.

  • Atika Capital Management's largest Q4 2025 buy was Madrigal Pharmaceuticals: 34,000 shares worth $19.8M.
  • Atika Capital Management added most to Teva Pharmaceuticals in Q4 2025, an estimated $12.1M increase.
  • Atika Capital Management's biggest Q4 2025 reduction was Amazon, cutting an estimated $72.5M.
  • Atika Capital Management fully exited Microsoft in Q4 2025, selling an estimated $85.5M.
  • Atika Capital Management's ten largest holdings make up 47% of its $950M portfolio in Q4 2025.
  • Atika Capital Management opened 35 new positions and closed 44 in Q4 2025.
  • Atika Capital Management's portfolio value fell 24% quarter-over-quarter to $950M.

Based on Atika Capital Management's 13F filing for Q4 2025, filed 13 Feb 2026.