1y return+48.7%S&P 500 +20.9%
3y return+107.0%S&P 500 +68.5%
5y return+43.1%S&P 500 +74.5%
10y return+406.4%S&P 500 +256.5%
These returns are for its stock picks as disclosed on Form 13F: last quarter's holdings, valued at this quarter's prices. They miss trades within each quarter, short positions, options, bonds, cash and fees, so they aren't the returns its clients got.
$100 invested in its stock picks
Since June 30, 2016: $506 against $357 in the S&P 500.2
Atika Capital Management LLCS&P 500 (SPY)
Top holdings
At the end of June 30, 2026. Change is in shares since the quarter before.2
| Stock | Value | Share of portfolio | Change |
|---|---|---|---|
| VRTVertiv Holdings Co | $223.0M | 22.1% | |
| Seagate Technology Hldngs PlCUSIP G7997R103 | $77.1M | 7.6% | +49.3% |
| AMDAdvanced Micro Devices Inc | $55.5M | 5.5% | New |
| LLYEli Lilly & Co | $49.3M | 4.9% | |
| INTCIntel Corp | $36.9M | 3.7% | New |
| ECHOEchostar Corp | $33.6M | 3.3% | +82.1% |
| GHGuardant Health Inc | $27.2M | 2.7% | +98.9% |
| CIENCiena Corp | $23.9M | 2.4% | +11.7% |
| ISRGIntuitive Surgical Inc | $22.8M | 2.3% | |
| VPGVishay Precision Group Inc | $17.7M | 1.8% | New |
| MRVLMarvell Technology Inc | $17.3M | 1.7% | New |
| RKLBRocket Lab Corp | $17.2M | 1.7% | +96.5% |
| WDCWestern Digital Corp | $16.9M | 1.7% | −29.8% |
| RVMDRevolution Medicines Inc | $16.5M | 1.6% | New |
| Ascendis Pharma A/sCUSIP K08588103 | $16.3M | 1.6% | New |
| DNTHDianthus Therapeutics Inc | $16.1M | 1.6% | +28.1% |
| AXSMAxsome Therapeutics Inc. | $15.4M | 1.5% | New |
| Teva Pharmaceutical Inds LtdCUSIP 881624209 | $14.9M | 1.5% | −7.8% |
| MTZMastec Inc | $14.8M | 1.5% | −38.4% |
| Sharkninja IncCUSIP G8068L108 | $13.4M | 1.3% | New |
| NFLXNetflix Inc. | $12.9M | 1.3% | |
| CWCurtiss Wright Corp | $12.1M | 1.2% | +23.1% |
| KYMRKymera Therapeutics Inc | $11.9M | 1.2% | New |
| SITMSitime Corp | $11.2M | 1.1% | +1.3% |
| TWSTTwist Bioscience Corp | $11.1M | 1.1% | New |
Best picks still held
How each current holding has done since the quarter it first appeared in its filings (up to six years back).
| Stock | Held since | Return since | Now worth |
|---|---|---|---|
| VRTVertiv Holdings Co | June 30, 2023 | +1251.7% | $223.0M |
| ECHOEchostar Corp | December 31, 2024 | +343.2% | $33.6M |
| Seagate Technology Hldngs PlCUSIP G7997R103 | September 30, 2025 | +308.8% | $77.1M |
| BWXTBwx Technologies Inc | June 30, 2022 | +253.3% | $10.5M |
| GHGuardant Health Inc | March 31, 2025 | +252.2% | $27.2M |
| CIENCiena Corp | September 30, 2025 | +236.8% | $23.9M |
| TTMITtm Technologies Inc | December 31, 2025 | +171.0% | $9.4M |
| LLYEli Lilly & Co | June 30, 2023 | +155.8% | $49.3M |
| MTZMastec Inc | June 30, 2025 | +144.1% | $14.8M |
| DNTHDianthus Therapeutics Inc | December 31, 2025 | +136.5% | $16.1M |
Sold off last quarter
- Terns Pharmaceuticals IncCUSIP 880881107 was $15.8M
- NETCloudflare Inc was $13.4M
- GOOGAlphabet Inc was $12.4M
- GDXVaneck Etf Trust was $7.3M
- UTHRUnited Therapeutics Corp Del was $7.3M
- KRMNKarman Hldgs Inc was $7.2M
- CLHClean Harbors Inc was $6.3M
- TLNTalen Energy Corp was $5.9M
- METAMeta Platforms Inc was $5.7M
- DBVTDbv Technologies S A was $5.7M
Quarter by quarter
| Quarter | Its picks | S&P 500 |
|---|---|---|
| June 30, 2026 | +25.8% | +14.8% |
| March 31, 2026 | +7.0% | −4.6% |
| December 31, 2025 | +3.4% | +2.4% |
| September 30, 2025 | +6.9% | +7.8% |
| June 30, 2025 | +24.3% | +10.5% |
| March 31, 2025 | −9.5% | −4.6% |
| December 31, 2024 | −0.2% | +2.1% |
| September 30, 2024 | +6.8% | +5.4% |
| June 30, 2024 | −1.1% | +4.0% |
| March 31, 2024 | +13.6% | +10.0% |
| December 31, 2023 | +15.9% | +11.2% |
| September 30, 2023 | −10.9% | −3.6% |
| June 30, 2023 | +7.0% | +8.3% |
| March 31, 2023 | −2.2% | +7.0% |
| December 31, 2022 | +0.0% | +7.1% |
| September 30, 2022 | +9.1% | −5.3% |
| June 30, 2022 | −23.7% | −16.5% |
| March 31, 2022 | −17.3% | −4.9% |
| December 31, 2021 | −3.1% | +10.7% |
| September 30, 2021 | −0.9% | +0.3% |
Sources
Every number on this page points here. Each one links to the public record.
- 1SEC EDGAR: Atika Capital Management LLC Form 13F filingshttps://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1599731&type=13F-HR&dateb=&owner=include&count=40CIK 1599731
- 2SEC: 13F for the quarter ended June 30, 2026https://www.sec.gov/Archives/edgar/data/1599731/000121465926010035/Filed August 13, 2026 · accession 0001214659-26-010035