Atika Capital Management
NEW YORK, NYfiles as Atika Capital Management LLC
$1.0bn in 62 US stocks at the end of 30 June 2026. The top 10 are 56.3% of the money. It changed about 37.9% of the portfolio this quarter.
Value
$1.0bn
Stocks
62
Top 10 share
56.3%
Turnover
37.9%
What changed this quarter
New
Bought for the first time this quarter.
- Advanced Micro DevicesAMD5.5% of the fund
- IntelINTC3.7% of the fund
- Vishay Precision GroupVPG1.8% of the fund
- Marvell TechnologyMRVL1.7% of the fund
- Revolution MedicinesRVMD1.6% of the fund
- Ascendis Pharma A/SASND1.6% of the fund
- Axsome TherapeuticsAXSM1.5% of the fund
- SharkNinjaSN1.3% of the fund
- Kymera TherapeuticsKYMR1.2% of the fund
- Twist BioscienceTWST1.1% of the fund
- AxogenAXGN1.0% of the fund
- NokiaNOK1.0% of the fund
- Charles River Laboratories InternationalCRL0.9% of the fund
- ACM ResearchACMR0.8% of the fund
- Roivant SciencesROIV0.8% of the fund
- RedditRDDT0.7% of the fund
- SemtechSMTC0.7% of the fund
- Definium TherapeuticsDFTX0.6% of the fund
- JATT II AcquisitionJATT0.5% of the fund
- Praxis Precision MedicinesPRAX0.4% of the fund
- Alkermes plc.ALKS0.3% of the fund
- CrowdStrike HoldingsCRWD0.3% of the fund
- Tarsus PharmaceuticalsTARS0.2% of the fund
- VericelVCEL0.2% of the fund
- VeradermicsMANE0.1% of the fund
Added
Bought more of a stock they already held.
- Seagate Technology HoldingsSTX7.6% of the fund+49%
- EchoStarECHO3.3% of the fund+82%
- Guardant HealthGH2.7% of the fund+99%
- CienaCIEN2.4% of the fund+12%
- Rocket LabRKLB1.7% of the fund+97%
- Dianthus TherapeuticsDNTH1.6% of the fund+28%
- Curtiss WrightCW1.2% of the fund+23%
- TheRealRealREAL1.1% of the fund+108%
- BBB FoodsTBBB1.0% of the fund+163%
- Warby ParkerWRBY0.5% of the fund+11%
Cut
Sold some of their stake.
- Western DigitalWDC1.7% of the fund-30%
- Teva Pharmaceutical IndustriesTEVA1.5% of the fund-8%
- MastecMTZ1.5% of the fund-38%
- Cogent BiosciencesCOGT1.0% of the fund-7%
- BWX TechnologiesBWXT1.0% of the fund-35%
- Oruka TherapeuticsORKA0.9% of the fund-56%
- TTM TechnologiesTTMI0.9% of the fund-46%
- Hut 8HUT0.5% of the fund-10%
- NlightLASR0.4% of the fund-17%
- Abivax SAABVX0.4% of the fund-6%
- Krystal BiotechKRYS0.2% of the fund-44%
Sold out
Sold their entire stake.
- Terns Pharmaceuticals-100%
- CloudflareNET-100%
- AlphabetGOOG-100%
- Vaneck ETF TrustGDX-100%
- United TherapeuticsUTHR-100%
- Karman HoldingsKRMN-100%
- Clean HarborsCLH-100%
- Talen EnergyTLN-100%
- Meta PlatformsMETA-100%
- DBV Technologies S ADBVT-100%
- HeicoHEI-100%
- QXOQXO-100%
- General ElectricGE-100%
- Ascendis Pharma A/SASND-100%
- Xenon PharmaceuticalsXENE-100%
- Maze TherapeuticsMAZE-100%
- Acadia Healthcare CompanyACHC-100%
- BridgeBio PharmaBBIO-100%
- HeicoHEI-A-100%
Holdings
- NokiaNOK
- Share
- 1.0%
- Value
- $10m
- Shares
- 750,000
New
- JATT II AcquisitionJATT
- Share
- 0.5%
- Value
- $5m
- Shares
- 400,000
New
- Abivax SAABVX
- Share
- 0.4%
- Value
- $4m
- Shares
- 27,000
-6%
| Company | Share of fund | Value | Shares | Change |
|---|---|---|---|---|
| Vertiv HoldingsVRT | 22.1% | $223m | 666,100 | Held |
| Seagate Technology HoldingsSTX | 7.6% | $77m | 79,865 | +49% |
| Advanced Micro DevicesAMD | 5.5% | $55m | 95,500 | New |
| Eli LillyLLY | 4.9% | $49m | 41,100 | Held |
| IntelINTC | 3.7% | $37m | 264,000 | New |
| EchoStarECHO | 3.3% | $34m | 331,400 | +82% |
| Guardant HealthGH | 2.7% | $27m | 181,000 | +99% |
| CienaCIEN | 2.4% | $24m | 48,768 | +12% |
| Intuitive SurgicalISRG | 2.3% | $23m | 57,216 | Held |
| Vishay Precision GroupVPG | 1.8% | $18m | 118,000 | New |
| Marvell TechnologyMRVL | 1.7% | $17m | 58,000 | New |
| Rocket LabRKLB | 1.7% | $17m | 169,000 | +97% |
| Western DigitalWDC | 1.7% | $17m | 26,477 | -30% |
| Revolution MedicinesRVMD | 1.6% | $16m | 88,000 | New |
| Ascendis Pharma A/SASND | 1.6% | $16m | 61,000 | New |
| Dianthus TherapeuticsDNTH | 1.6% | $16m | 165,000 | +28% |
| Axsome TherapeuticsAXSM | 1.5% | $15m | 63,000 | New |
| Teva Pharmaceutical IndustriesTEVA | 1.5% | $15m | 440,000 | -8% |
| MastecMTZ | 1.5% | $15m | 35,500 | -38% |
| SharkNinjaSN | 1.3% | $13m | 88,000 | New |
| NetflixNFLX | 1.3% | $13m | 180,000 | Held |
| Curtiss WrightCW | 1.2% | $12m | 16,000 | +23% |
| Kymera TherapeuticsKYMR | 1.2% | $12m | 104,000 | New |
| SitimeSITM | 1.1% | $11m | 15,000 | Held |
| Twist BioscienceTWST | 1.1% | $11m | 108,000 | New |
| TheRealRealREAL | 1.1% | $11m | 940,000 | +108% |
| Cogent BiosciencesCOGT | 1.0% | $11m | 272,000 | -7% |
| BWX TechnologiesBWXT | 1.0% | $11m | 54,000 | -35% |
| Amazon.comAMZN | 1.0% | $10m | 44,000 | Held |
| BBB FoodsTBBB | 1.0% | $10m | 250,000 | +163% |
| AxogenAXGN | 1.0% | $10m | 221,000 | New |
| NokiaNOK | 1.0% | $10m | 750,000 | New |
| Oruka TherapeuticsORKA | 0.9% | $10m | 100,000 | -56% |
| TTM TechnologiesTTMI | 0.9% | $9m | 50,000 | -46% |
| Charles River Laboratories InternationalCRL | 0.9% | $9m | 38,000 | New |
| ACM ResearchACMR | 0.8% | $8m | 63,000 | New |
| Roivant SciencesROIV | 0.8% | $8m | 217,000 | New |
| MercadoLibreMELI | 0.8% | $8m | 4,510 | Held |
| AppfolioAPPF | 0.8% | $8m | 47,500 | Held |
| Protagonist TherapeuticsPTGX | 0.8% | $8m | 62,100 | Held |
| RedditRDDT | 0.7% | $7m | 43,000 | New |
| SemtechSMTC | 0.7% | $7m | 46,000 | New |
| Five BelowFIVE | 0.7% | $7m | 40,000 | Held |
| Ferguson EnterprisesFERG | 0.7% | $7m | 29,300 | Held |
| Definium TherapeuticsDFTX | 0.6% | $6m | 122,000 | New |
| ImmunomeIMNM | 0.6% | $6m | 262,900 | Held |
| Hut 8HUT | 0.5% | $5m | 44,500 | -10% |
| Warby ParkerWRBY | 0.5% | $5m | 150,000 | +11% |
| JATT II AcquisitionJATT | 0.5% | $5m | 400,000 | New |
| Praxis Precision MedicinesPRAX | 0.4% | $4m | 12,900 | New |
| NlightLASR | 0.4% | $4m | 55,000 | -17% |
| Abivax SAABVX | 0.4% | $4m | 27,000 | -6% |
| Alkermes plc.ALKS | 0.3% | $3m | 55,571 | New |
| CrowdStrike HoldingsCRWD | 0.3% | $3m | 3,800 | New |
| Tarsus PharmaceuticalsTARS | 0.2% | $3m | 40,000 | New |
| Krystal BiotechKRYS | 0.2% | $2m | 6,000 | -44% |
| VericelVCEL | 0.2% | $2m | 34,000 | New |
| VeradermicsMANE | 0.1% | $1m | 12,000 | New |
| Kiniksa Pharmaceuticals InternationalKNSA | 0.1% | $1m | 23,000 | New |
| SweetgreenSG | 0.1% | $1m | 120,000 | New |
| SandiskSNDK | <0.1% | $688,940 | 303 | New |
| StubHub HoldingsSTUB | <0.1% | $643,500 | 50,000 | New |
Options (19)
- Spdr Series TrustXBI
- Type
- Put
- Value
- $89m
- Contracts
- 5,625
- Invesco QQQ TRQQQ
- Type
- Put
- Value
- $74m
- Contracts
- 1,000
- GE VernovaGEV
- Type
- Put
- Value
- $59m
- Contracts
- 500
- Amazon.comAMZN
- Type
- Call
- Value
- $53m
- Contracts
- 2,220
- Invesco QQQ TRQQQ
- Type
- Call
- Value
- $49m
- Contracts
- 660
- Micron TechnologyMU
- Type
- Put
- Value
- $35m
- Contracts
- 300
- Vaneck ETF TrustSMH
- Type
- Put
- Value
- $33m
- Contracts
- 510
- Ishares TRIGV
- Type
- Put
- Value
- $25m
- Contracts
- 2,720
- British American Tobacco p.l.c.BTI
- Type
- Call
- Value
- $20m
- Contracts
- 3,300
- Ishares Bitcoin Trust ETFIBIT
- Type
- Put
- Value
- $20m
- Contracts
- 6,000
- Roundhill ETF TrustDRAM
- Type
- Put
- Value
- $16m
- Contracts
- 2,100
- StubHub HoldingsSTUB
- Type
- Call
- Value
- $12m
- Contracts
- 9,000
- Alkermes plc.ALKS
- Type
- Call
- Value
- $8m
- Contracts
- 1,600
- EchoStarECHO
- Type
- Call
- Value
- $7m
- Contracts
- 709
- Enphase EnergyENPH
- Type
- Call
- Value
- $6m
- Contracts
- 1,200
- CoreWeaveCRWV
- Type
- Call
- Value
- $3m
- Contracts
- 350
- Teva Pharmaceutical IndustriesTEVA
- Type
- Call
- Value
- $3m
- Contracts
- 1,000
- Cleveland-CliffsCLF
- Type
- Call
- Value
- $1m
- Contracts
- 1,500
- Keel InfrastructureKEEL
- Type
- Call
- Value
- $861,000
- Contracts
- 1,500
| Company | Type | Value | Contracts |
|---|---|---|---|
| Spdr Series TrustXBI | Put | $89m | 5,625 |
| Invesco QQQ TRQQQ | Put | $74m | 1,000 |
| GE VernovaGEV | Put | $59m | 500 |
| Amazon.comAMZN | Call | $53m | 2,220 |
| Invesco QQQ TRQQQ | Call | $49m | 660 |
| Micron TechnologyMU | Put | $35m | 300 |
| Vaneck ETF TrustSMH | Put | $33m | 510 |
| Ishares TRIGV | Put | $25m | 2,720 |
| British American Tobacco p.l.c.BTI | Call | $20m | 3,300 |
| Ishares Bitcoin Trust ETFIBIT | Put | $20m | 6,000 |
| Roundhill ETF TrustDRAM | Put | $16m | 2,100 |
| StubHub HoldingsSTUB | Call | $12m | 9,000 |
| Alkermes plc.ALKS | Call | $8m | 1,600 |
| EchoStarECHO | Call | $7m | 709 |
| Enphase EnergyENPH | Call | $6m | 1,200 |
| CoreWeaveCRWV | Call | $3m | 350 |
| Teva Pharmaceutical IndustriesTEVA | Call | $3m | 1,000 |
| Cleveland-CliffsCLF | Call | $1m | 1,500 |
| Keel InfrastructureKEEL | Call | $861,000 | 1,500 |
Over time and by industry
Value over time
Jun '25
Dec '25
Jun '26
Value is up 5.3% since 30 June 2025.
Where the money is
Technology29.4%
Industrials29.0%
Health care28.6%
Media & telecom5.4%
Retail & consumer4.4%
Everyday goods1.0%
Financial services1.0%
Other1.3%
From the fund's 13F filings. They list US stocks and options only, 45 days after each quarter, and leave out cash, bonds, shorts and foreign shares.