13F-HR filed by Atika Capital Management LLC
Atika Capital Management LLC filed this 13F-HR for the quarter ended 2026-06-30, filed 2026-08-13, with 81 holding rows worth $1,521,477,391.
- Accession
- 0001214659-26-010035
- Filer
- CIK 1599731
- Filed
- 2026-08-13
- Accepted by EDGAR
- acceptance time not in the bulk data set
- Ingested
- Source
- SEC quarterly data set
13F report for Q2 2026
A holdings report, 243 entries on the cover page, a total value of $1,521,477,391 stated on the cover page (in dollars after the unit check, H1), rows summing to $1,521,477,391 with VALUE read as dollars as filed, 13F file number 028-15941. The quarter's positions are built on this report. The resolved quarter.
Other managers
- included managerAtika Capital Partners LP028-16711
- included managerOptika Master Portfolio Ltd028-20128
The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).
| Issuer as filed | CUSIP | Class | Amount | Value | Value read as | Type |
|---|---|---|---|---|---|---|
| VERTIV HOLDINGS CO COM CL A | 92537N108 | Stock | 666,100 | $223,023,601 | dollars as filed | |
| SPDR SER TR | 78464A870 | S&P BIOTECH | 5,625 | $89,015,625 | dollars as filed | put |
| SEAGATE TECHNOLOGY HLDNGS | G7997R103 | ORD SHS | 79,865 | $77,069,725 | dollars as filed | |
| INVESCO QQQ TR | 46090E103 | COM | 1,000 | $73,640,000 | dollars as filed | put |
| GE Vernova Inc. | 36828A101 | COM | 500 | $58,743,000 | dollars as filed | put |
| Advanced Micro Devices,Inc. | 007903107 | COM | 95,500 | $55,476,904 | dollars as filed | |
| Amazon.com, Inc | 023135106 | COM | 2,220 | $52,911,480 | dollars as filed | call |
| Eli Lilly and Company | 532457108 | COM | 41,100 | $49,296,573 | dollars as filed | |
| INVESCO QQQ TR | 46090E103 | COM | 660 | $48,602,400 | dollars as filed | call |
| Intel Corp | 458140100 | COM | 264,000 | $36,862,320 | dollars as filed | |
| Micron Technology,Inc. | 595112103 | COM | 300 | $34,623,300 | dollars as filed | put |
| ECHOSTAR CORP | 278768106 | CL A | 331,400 | $33,637,101 | dollars as filed | |
| VANECK ETF TRUST | 92189F676 | COM | 510 | $33,450,390 | dollars as filed | put |
| GUARDANT HEALTH INC COM | 40131M109 | Stock | 181,000 | $27,155,430 | dollars as filed | |
| iShares Expanded Tech-Software Sector ETF | 464287515 | SHS | 2,720 | $24,643,200 | dollars as filed | put |
| CIENA CORP COM NEW | 171779309 | Stock | 48,768 | $23,923,629 | dollars as filed | |
| Intuitive Surgical,Inc. | 46120E602 | COM | 57,216 | $22,753,659 | dollars as filed | |
| BRITISH AMERN TOB PLC SPONSORED ADR | 110448107 | ADR | 3,300 | $20,380,800 | dollars as filed | call |
| IShares Bitcoin Trust Registered | 46438F101 | SHS | 6,000 | $19,974,000 | dollars as filed | put |
| VISHAY PRECISION GROUP INC | 92835K103 | COM | 118,000 | $17,689,380 | dollars as filed | |
| MARVELL TECHNOLOGY INC | 573874104 | COM | 58,000 | $17,277,620 | dollars as filed | |
| ROCKETLABCORPCLASSCLASSA | 773121108 | STOK | 169,000 | $17,178,851 | dollars as filed | |
| WESTERN DIGITAL CORP | 958102105 | COM | 26,477 | $16,911,389 | dollars as filed | |
| REVOLUTION MEDICINES INC COM | 76155X100 | Stock | 88,000 | $16,480,639 | dollars as filed | |
| ASCENDIS PHARMA A/S | K08588103 | ORD SHS *A* | 61,000 | $16,269,920 | dollars as filed | |
| DIANTHUS THERAPEUTICS INC | 252828108 | COM | 165,000 | $16,084,201 | dollars as filed | |
| ROUNDHILL ETF TRUST | 77926X320 | MEMORY ETF *A* | 2,100 | $15,508,500 | dollars as filed | put |
| AXSOME THERAPEUTICS INC. COM | 05464T104 | Stock | 63,000 | $15,420,511 | dollars as filed | |
| TEVA PHARMACEUTICAL INDS LTD SPONSORED ADS | 881624209 | ADR | 440,000 | $14,907,200 | dollars as filed | |
| MASTEC INC COM | 576323109 | Stock | 35,500 | $14,770,130 | dollars as filed | |
| SHARKNINJA INC COM SHS | G8068L108 | Stock | 88,000 | $13,399,761 | dollars as filed | |
| Netflix, Inc | 64110L106 | COM | 180,000 | $12,852,000 | dollars as filed | |
| CURTISS WRIGHT CORP COM | 231561101 | Stock | 16,000 | $12,124,160 | dollars as filed | |
| KYMERA THERAPEUTICS INC | 501575104 | COM | 104,000 | $11,925,681 | dollars as filed | |
| STUBHUB HOLDINGS INC CLASS A | 86384P109 | COMMON STOCK | 9,000 | $11,583,000 | dollars as filed | call |
| SITIME CORP COM | 82982T106 | Stock | 15,000 | $11,183,400 | dollars as filed | |
| TWIST BIOSCIENCE CORP | 90184D100 | COM | 108,000 | $11,111,040 | dollars as filed | |
| THE REALREAL INC | 88339P101 | COM | 940,000 | $11,082,601 | dollars as filed | |
| COGENT BIOSCIENCES INC | 19240Q201 | COM | 272,000 | $10,526,400 | dollars as filed | |
| BWX TECHNOLOGIES INC | 05605H100 | COM | 54,000 | $10,511,101 | dollars as filed | |
| Amazon.com, Inc | 023135106 | COM | 44,000 | $10,486,959 | dollars as filed | |
| BBB Foods Inc | G0896C103 | COM | 250,000 | $10,417,500 | dollars as filed | |
| AXOGEN INC | 05463X106 | COM | 221,000 | $10,207,991 | dollars as filed | |
| NOKIA CORP | 654902204 | SPONSORED ADR | 750,000 | $9,960,000 | dollars as filed | |
| ORUKA THERAPEUTICS INC COM | 687604108 | Stock | 100,000 | $9,517,000 | dollars as filed | |
| TTM TECHNOLOGIES INC | 87305R109 | COM | 50,000 | $9,351,000 | dollars as filed | |
| CHARLES RIV LABS INTL INC | 159864107 | COM | 38,000 | $8,618,020 | dollars as filed | |
| ALKERMES PLC | G01767105 | SHS | 1,600 | $8,384,000 | dollars as filed | call |
| ACM RESH INC COM CL A | 00108J109 | Stock | 63,000 | $7,994,069 | dollars as filed | |
| ROIVANT SCIENCES LTD | G76279101 | SHS | 217,000 | $7,679,630 | dollars as filed | |
| MERCADOLIBREINC | 58733R102 | STOK | 4,510 | $7,655,229 | dollars as filed | |
| APPFOLIO INC | 03783C100 | COM CL A | 47,500 | $7,616,626 | dollars as filed | |
| PROTAGONIST THERAPEUTICS | 74366E102 | COM | 62,100 | $7,612,217 | dollars as filed | |
| REDDIT INC CL A | 75734B100 | Stock | 43,000 | $7,463,940 | dollars as filed | |
| SEMTECH CORP COM | 816850101 | Stock | 46,000 | $7,445,100 | dollars as filed | |
| ECHOSTAR CORP | 278768106 | CL A | 709 | $7,196,350 | dollars as filed | call |
| FIVE BELOW INC COM | 33829M101 | Stock | 40,000 | $7,191,600 | dollars as filed | |
| FERGUSON ENTERPRISES INC COMMON STOCK NEW | 31488V107 | Stock | 29,300 | $6,953,769 | dollars as filed | |
| ENPHASE ENERGY INC COM | 29355A107 | Stock | 1,200 | $5,908,800 | dollars as filed | call |
| DEFINIUM THERAPEUTICS INC | 24477V105 | COM SHS | 122,000 | $5,738,880 | dollars as filed | |
| IMMUNOME INC | 45257U108 | COM | 262,900 | $5,570,851 | dollars as filed | |
| HUT 8 CORP | 44812J104 | COM | 44,500 | $5,137,302 | dollars as filed | |
| WARBY PARKER INC | 93403J106 | CL A COM | 150,000 | $4,551,000 | dollars as filed | |
| JATT II ACQUISITION CORP | G50765109 | ORD SHS | 400,000 | $4,544,000 | dollars as filed | |
| PRAXIS PRECISION MEDICINES I | 74006W207 | COM NEW | 12,900 | $4,318,791 | dollars as filed | |
| NLIGHT INC | 65487K100 | COM | 55,000 | $3,829,100 | dollars as filed | |
| ABIVAX SA- | 00370M103 | SPONSORED ADS | 27,000 | $3,598,020 | dollars as filed | |
| COREWEAVE INC COM CL A | 21873S108 | COM | 350 | $3,483,900 | dollars as filed | call |
| TEVA PHARMACEUTICAL INDS LTD SPONSORED ADS | 881624209 | ADR | 1,000 | $3,388,000 | dollars as filed | call |
| ALKERMES PLC | G01767105 | SHS | 55,571 | $2,911,643 | dollars as filed | |
| CROWDSTRIKE HLDGS INC | 22788C105 | COM | 3,800 | $2,899,932 | dollars as filed | |
| TARSUS PHARMACEUTICALS INC | 87650L103 | COMMON STOCK | 40,000 | $2,517,600 | dollars as filed | |
| KRYSTAL BIOTECH INC COM | 501147102 | Stock | 6,000 | $2,230,020 | dollars as filed | |
| VERICEL CORP | 92346J108 | COM | 34,000 | $1,512,660 | dollars as filed | |
| VERADERMICS INC | 922967104 | COMMON STOCK | 12,000 | $1,475,280 | dollars as filed | |
| KINIKSA PHARMACEUTICALS INTL P ORD SHS CL A | G52694109 | Stock | 23,000 | $1,470,849 | dollars as filed | |
| CLEVELAND-CLIFFS INC NEW COM | 185899101 | Stock | 1,500 | $1,408,500 | dollars as filed | call |
| SWEETGREEN INC | 87043Q108 | COM CL A | 120,000 | $1,057,201 | dollars as filed | |
| KEEL INFRASTRUCTURE CORP | 486917107 | COMMON STOCK | 1,500 | $861,000 | dollars as filed | call |
| SanDisk Corporation | 80004C200 | COM | 303 | $688,940 | dollars as filed | |
| STUBHUB HOLDINGS INC CLASS A | 86384P109 | COMMON STOCK | 50,000 | $643,500 | dollars as filed |
Amendment chain
| Filing | Role | Filed | Accepted | Ingested |
|---|---|---|---|---|
| 13F-HR 0001214659-26-010035 | this filing | 2026-08-13 | acceptance time not in the bulk data set |