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Atika Capital Management Portfolio holdings
AUM
$1.52B
Turnover
64.42%
1-Year Est. Return
229.41%
This Fund
S&P 500
This Quarter Est. Return
+67.26%
1 Year Est. Return
+229.41%
3 Year Est. Return
+810.62%
5 Year Est. Return
+1,830.01%
10 Year Est. Return
+67,312.86%
AUM
$1.52B
AUM Growth
+$725M
(+91%)
Cap. Flow
+$143M
Cap. Flow % of AUM
Cap. Flow %
9.43%
Top 10 Holdings %
Top 10 Hldgs %
50.26%
Holding
104
New
44
Increased
15
Reduced
13
Closed
23
Avg Time Held
Equity + Options
0.6
years
Top 10 Avg Time Held
Equity + Options
0.6
years
Top 20 Avg Time Held
Equity + Options
0.6
years
Avg Time Held Equity only
0.8
years
Top 10 Avg Time Held Equity only
0.7
years
Top 20 Avg Time Held Equity only
0.6
years
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Advanced Micro Devices
AMD
|
+$39.2M |
| 2 |
Intel
INTC
|
+$26.7M |
| 3 |
Seagate
STX
|
+$20.1M |
| 4 |
EchoStar
ECHO
|
+$18.3M |
| 5 |
Axsome Therapeutics
AXSM
|
+$13.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Terns Pharmaceuticals
TERN
|
+$15.8M |
| 2 |
Cloudflare
NET
|
+$13.4M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$12.4M |
| 4 |
Oruka Therapeutics
ORKA
|
+$8.66M |
| 5 |
MasTec
MTZ
|
+$8.46M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 33.76% |
| 2 | Technology | 20.12% |
| 3 | Healthcare | 19.16% |
| 4 | Industrials | 18.7% |
| 5 | Communication Services | 3.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
1
Vertiv
VRT
$79.3B
| $223M | 14.66% |
666,100
| – | – |
2023 Q2
12 quarters
|
|
2
PUT
State Street SPDR S&P Biotech ETF
XBI
$10.2B
| $89M | 5.85% |
5,625
+1,400
| +33% | +$189K |
2025 Q4
2 quarters
|
|
|
3
Seagate
STX
$150B
| $77.1M | 5.07% |
79,865
+26,365
| +49% | +$20.1M |
2025 Q3
3 quarters
|
|
4
PUT
Invesco QQQ Trust
QQQ
$485B
| $73.6M | 4.84% |
+1,000
| New | +$688K |
2026 Q2
0 quarters
|
|
5
PUT
GE Vernova
GEV
$242B
| $58.7M | 3.86% |
+500
| New | +$510K |
2026 Q2
0 quarters
|
|
|
6
Advanced Micro Devices
AMD
$878B
| $55.5M | 3.65% |
+95,500
| New | +$39.2M |
2026 Q2
0 quarters
|
|
7
CALL
Amazon
AMZN
$2.83T
| $52.9M | 3.48% |
+2,220
| New | +$557K |
2026 Q2
0 quarters
|
|
8
Eli Lilly
LLY
$1.11T
| $49.3M | 3.24% |
41,100
| – | – |
2023 Q2
12 quarters
|
|
|
9
CALL
Invesco QQQ Trust
QQQ
$485B
| $48.6M | 3.19% |
+660
| New | +$454K |
2026 Q2
0 quarters
|
|
|
10
Intel
INTC
$486B
| $36.9M | 2.42% |
+264,000
| New | +$26.7M |
2026 Q2
0 quarters
|
|
11
PUT
Micron Technology
MU
$1.02T
| $34.6M | 2.28% |
+300
| New | +$225K |
2026 Q2
0 quarters
|
|
|
12
EchoStar
ECHO
$25.1B
| $33.6M | 2.21% |
331,400
+149,400
| +82% | +$18.3M |
2024 Q4
6 quarters
|
|
13
PUT
VanEck Semiconductor ETF
SMH
$66.5B
| $33.5M | 2.2% |
510
-210
| -29% | -$115K |
2026 Q1
1 quarter
|
|
14
Guardant Health
GH
$21.2B
| $27.2M | 1.78% |
181,000
+90,000
| +99% | +$9.8M |
2025 Q1
5 quarters
|
|
15
PUT
iShares Expanded Tech-Software Sector ETF
IGV
$14.7B
| $24.6M | 1.62% |
+2,720
| New | +$242K |
2026 Q2
0 quarters
|
|
16
Ciena
CIEN
$48.8B
| $23.9M | 1.57% |
48,768
+5,117
| +12% | +$2.61M |
2025 Q3
3 quarters
|
|
17
Intuitive Surgical
ISRG
$153B
| $22.8M | 1.5% |
57,216
| – | – |
2022 Q3
15 quarters
|
|
18
CALL
British American Tobacco
BTI
$126B
| $20.4M | 1.34% |
+3,300
| New | +$199K |
2026 Q2
0 quarters
|
|
19
PUT
iShares Bitcoin Trust
IBIT
$65.8B
| $20M | 1.31% |
+6,000
| New | +$244K |
2026 Q2
0 quarters
|
|
20
Vishay Precision Group
VPG
$809M
| $17.7M | 1.16% |
+118,000
| New | +$11M |
2026 Q2
0 quarters
|
|
21
Marvell Technology
MRVL
$213B
| $17.3M | 1.14% |
+58,000
| New | +$11.6M |
2026 Q2
0 quarters
|
|
22
Rocket Lab Corp
RKLB
$32.8B
| $17.2M | 1.13% |
169,000
+83,000
| +97% | +$8.27M |
2025 Q4
2 quarters
|
|
23
Western Digital
WDC
$132B
| $16.9M | 1.11% |
26,477
-11,240
| -30% | -$5.47M |
2026 Q1
1 quarter
|
|
24
Revolution Medicines
RVMD
$39B
| $16.5M | 1.08% |
+88,000
| New | +$12.9M |
2026 Q2
0 quarters
|
|
25
Ascendis Pharma A/S
ASND
$15.1B
| $16.3M | 1.07% |
61,000
+41,875
| +219% | +$9.8M |
2025 Q1
5 quarters
|
|
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MIM
Atika Capital Management's Q2 2026 Portfolio in Review
As of Q2 2026, Atika Capital Management held 104 positions worth $1.52B, up 91% from $796M the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Atika Capital Management deployed $143M of net new capital in Q2 2026, opening 44 new positions and adding to 15 existing holdings. Its largest new stake was Advanced Micro Devices: 95,500 shares worth $55.5M.
By sector, the portfolio is most concentrated in Miscellaneous at 34% of assets, up from 21% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Oruka Therapeutics, an estimated $8.66M trimmed.
- Atika Capital Management's largest Q2 2026 buy was Advanced Micro Devices: 95,500 shares worth $55.5M.
- Atika Capital Management added most to Seagate in Q2 2026, an estimated $20.1M increase.
- Atika Capital Management's biggest Q2 2026 reduction was Oruka Therapeutics, cutting an estimated $8.66M.
- Atika Capital Management fully exited Terns Pharmaceuticals in Q2 2026, selling an estimated $15.8M.
- Atika Capital Management's ten largest holdings make up 50% of its $1.52B portfolio in Q2 2026.
- Atika Capital Management opened 44 new positions and closed 23 in Q2 2026.
- Atika Capital Management's portfolio value rose 91% quarter-over-quarter to $1.52B.
Based on Atika Capital Management's 13F filing for Q2 2026, filed 13 Aug 2026.