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Atika Capital Management LLC
Period ended Jun 30, 2026 · Latest filing Aug 13, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Jun 30, 2026: $1,521,477,391
More quarters will appear as history becomes available.
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- VERTIV HOLDINGS CO · COM CL A · 92537N108 · shares: $223,023,601
- SPDR SERIES TRUST · ST STR SP BIOT · 78464A870 · shares · PUT: $89,015,625
- SEAGATE TECHNOLOGY HLDNGS PL · ORD SHS · G7997R103 · shares: $77,069,725
- INVESCO QQQ TR · UNIT SER 1 · 46090E103 · shares · PUT: $73,640,000
- GE VERNOVA INC · COM · 36828A101 · shares · PUT: $58,743,000
- ADVANCED MICRO DEVICES INC · COM · 007903107 · shares: $55,476,904
- AMAZON COM INC · COM · 023135106 · shares · CALL: $52,911,480
- ELI LILLY & CO · COM · 532457108 · shares: $49,296,573
- INVESCO QQQ TR · UNIT SER 1 · 46090E103 · shares · CALL: $48,602,400
- INTEL CORP · COM · 458140100 · shares: $36,862,320
Reported holdings
243 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| CIENA CORP | COM NEW | 171779309 | — | 7,797 shares | $3,824,896 |
| TEVA PHARMACEUTICAL INDS LTD | SPONSORED ADS | 881624209 | — | 111,190 shares | $3,767,117 |
| FERGUSON ENTERPRISES INC | COMMON STOCK NEW | 31488V107 | — | 15,817 shares | $3,753,849 |
| MASTEC INC | COM | 576323109 | — | 8,819 shares | $3,669,233 |
| NETFLIX INC. | COM | 64110L106 | — | 48,990 shares | $3,497,886 |
| ENPHASE ENERGY INC | COM | 29355A107 | CALL | 700 shares | $3,446,800 |
| BRITISH AMERN TOB PLC | SPONSORED ADR | 110448107 | CALL | 556 shares | $3,433,856 |
| DEFINIUM THERAPEUTICS INC | COM SHS | 24477V105 | — | 71,176 shares | $3,348,119 |
| SHARKNINJA INC | COM SHS | G8068L108 | — | 21,844 shares | $3,326,186 |
| ISHARES BITCOIN TRUST ETF | SHS BEN INT | 46438F101 | PUT | 989 shares | $3,292,381 |
| IMMUNOME INC | COM | 45257U108 | — | 153,237 shares | $3,247,092 |
| CURTISS WRIGHT CORP | COM | 231561101 | — | 4,043 shares | $3,063,624 |
| KYMERA THERAPEUTICS INC | COM | 501575104 | — | 26,276 shares | $3,013,069 |
| HUT 8 CORP | COM | 44812J104 | — | 25,962 shares | $2,997,183 |
| INTUITIVE SURGICAL INC | COM NEW | 46120E602 | — | 7,387 shares | $2,937,662 |
| MARVELL TECHNOLOGY INC | COM | 573874104 | — | 9,781 shares | $2,913,662 |
| ROCKET LAB CORP | COM | 773121108 | — | 28,618 shares | $2,909,020 |
| STUBHUB HLDGS INC | CL A | 86384P109 | CALL | 2,256 shares | $2,903,472 |
| VISHAY PRECISION GROUP INC | COM | 92835K103 | — | 19,336 shares | $2,898,660 |
| WESTERN DIGITAL CORP | COM | 958102105 | — | 4,484 shares | $2,864,020 |
| SITIME CORP | COM | 82982T106 | — | 3,791 shares | $2,826,418 |
| REVOLUTION MEDICINES INC | COM | 76155X100 | — | 14,840 shares | $2,779,235 |
| TWIST BIOSCIENCE CORP | COM | 90184D100 | — | 26,808 shares | $2,758,007 |
| THE REALREAL INC | COM | 88339P101 | — | 233,872 shares | $2,757,351 |
| ASCENDIS PHARMA A/S | ORD SHS | K08588103 | — | 10,000 shares | $2,667,200 |
| BWX TECHNOLOGIES INC | COM | 05605H100 | — | 13,646 shares | $2,656,194 |
| WARBY PARKER INC | CL A COM | 93403J106 | — | 87,440 shares | $2,652,930 |
| DIANTHUS THERAPEUTICS INC | COM | 252828108 | — | 27,214 shares | $2,652,821 |
| AMAZON COM INC | COM | 023135106 | — | 11,119 shares | $2,650,102 |
| JATT II ACQUISITION CORP | ORD SHS | G50765109 | — | 233,036 shares | $2,647,289 |
| BBB FOODS INC | CL A COM | G0896C103 | — | 63,186 shares | $2,632,961 |
| COGENT BIOSCIENCES INC | COM | 19240Q201 | — | 67,517 shares | $2,612,908 |
| AXOGEN INC | COM | 05463X106 | — | 55,856 shares | $2,579,989 |
| ROUNDHILL ETF TRUST | MEMORY ETF | 77926X320 | PUT | 345 shares | $2,547,825 |
| AXSOME THERAPEUTICS INC. | COM | 05464T104 | — | 10,323 shares | $2,526,761 |
| PRAXIS PRECISION MEDICINES I | COM NEW | 74006W207 | — | 7,520 shares | $2,517,621 |
| MASTEC INC | COM | 576323109 | — | 5,987 shares | $2,490,951 |
| NOKIA CORP | SPONSORED ADR | 654902204 | — | 186,325 shares | $2,474,396 |
| TEVA PHARMACEUTICAL INDS LTD | SPONSORED ADS | 881624209 | — | 72,125 shares | $2,443,595 |
| ORUKA THERAPEUTICS INC | COM | 687604108 | — | 24,843 shares | $2,364,308 |
| TTM TECHNOLOGIES INC | COM | 87305R109 | — | 12,422 shares | $2,323,162 |
| FERGUSON ENTERPRISES INC | COMMON STOCK NEW | 31488V107 | — | 9,761 shares | $2,316,578 |
| APPFOLIO INC | COM CL A | 03783C100 | — | 14,270 shares | $2,288,195 |
| SHARKNINJA INC | COM SHS | G8068L108 | — | 14,902 shares | $2,269,128 |
| NLIGHT INC | COM | 65487K100 | — | 32,034 shares | $2,230,207 |
| CHARLES RIV LABS INTL INC | COM | 159864107 | — | 9,440 shares | $2,140,898 |
| ALKERMES PLC | SHS | G01767105 | CALL | 404 shares | $2,116,960 |
| ABIVAX SA | SPONSORED ADS | 00370M103 | — | 15,739 shares | $2,097,379 |
| COREWEAVE INC | COM CL A | 21873S108 | CALL | 204 shares | $2,030,616 |
| CURTISS WRIGHT CORP | COM | 231561101 | — | 2,621 shares | $1,986,089 |
| ACM RESH INC | COM CL A | 00108J109 | — | 15,651 shares | $1,985,955 |
| TEVA PHARMACEUTICAL INDS LTD | SPONSORED ADS | 881624209 | CALL | 583 shares | $1,975,204 |
| KYMERA THERAPEUTICS INC | COM | 501575104 | — | 17,050 shares | $1,955,124 |
| ROIVANT SCIENCES LTD | SHS | G76279101 | — | 55,014 shares | $1,946,945 |
| MERCADOLIBRE INC | COM | 58733R102 | — | 1,138 shares | $1,931,630 |
| STUBHUB HLDGS INC | CL A | 86384P109 | CALL | 1,497 shares | $1,926,639 |
| PROTAGONIST THERAPEUTICS INC | COM | 74366E102 | — | 15,671 shares | $1,920,951 |
| ECHOSTAR CORP | CL A | 278768106 | CALL | 187 shares | $1,898,050 |
| NETFLIX INC. | COM | 64110L106 | — | 26,510 shares | $1,892,814 |
| TWIST BIOSCIENCE CORP | COM | 90184D100 | — | 18,289 shares | $1,881,572 |
| SEMTECH CORP | COM | 816850101 | — | 11,623 shares | $1,881,183 |
| THE REALREAL INC | COM | 88339P101 | — | 157,364 shares | $1,855,322 |
| REDDIT INC | CL A | 75734B100 | — | 10,683 shares | $1,854,355 |
| SITIME CORP | COM | 82982T106 | — | 2,458 shares | $1,832,586 |
| FIVE BELOW INC | COM | 33829M101 | — | 10,139 shares | $1,822,891 |
| COGENT BIOSCIENCES INC | COM | 19240Q201 | — | 46,060 shares | $1,782,522 |
| BWX TECHNOLOGIES INC | COM | 05605H100 | — | 8,847 shares | $1,722,069 |
| AMAZON COM INC | COM | 023135106 | — | 7,209 shares | $1,718,193 |
| BBB FOODS INC | CL A COM | G0896C103 | — | 40,966 shares | $1,707,053 |
| ALKERMES PLC | SHS | G01767105 | — | 32,367 shares | $1,695,869 |
| CROWDSTRIKE HLDGS INC | CL A | 22788C105 | — | 2,215 shares | $1,690,355 |
| NOKIA CORP | SPONSORED ADR | 654902204 | — | 126,477 shares | $1,679,615 |
| AXOGEN INC | COM | 05463X106 | — | 36,215 shares | $1,672,771 |
| ORUKA THERAPEUTICS INC | COM | 687604108 | — | 16,864 shares | $1,604,947 |
| TTM TECHNOLOGIES INC | COM | 87305R109 | — | 8,431 shares | $1,576,766 |
| ENPHASE ENERGY INC | COM | 29355A107 | CALL | 303 shares | $1,491,972 |
| TARSUS PHARMACEUTICALS INC | COM | 87650L103 | — | 23,334 shares | $1,468,642 |
| CHARLES RIV LABS INTL INC | COM | 159864107 | — | 6,409 shares | $1,453,497 |
| DEFINIUM THERAPEUTICS INC | COM SHS | 24477V105 | — | 30,824 shares | $1,449,961 |
| IMMUNOME INC | COM | 45257U108 | — | 66,498 shares | $1,409,093 |
| ALKERMES PLC | SHS | G01767105 | CALL | 263 shares | $1,378,120 |
| ACM RESH INC | COM CL A | 00108J109 | — | 10,624 shares | $1,348,079 |
| KRYSTAL BIOTECH INC | COM | 501147102 | — | 3,500 shares | $1,300,845 |
| HUT 8 CORP | COM | 44812J104 | — | 11,243 shares | $1,297,948 |
| ROIVANT SCIENCES LTD | SHS | G76279101 | — | 35,610 shares | $1,260,238 |
| REDDIT INC | CL A | 75734B100 | — | 7,251 shares | $1,258,629 |
| MERCADOLIBRE INC | COM | 58733R102 | — | 739 shares | $1,254,371 |
| PROTAGONIST THERAPEUTICS INC | COM | 74366E102 | — | 10,173 shares | $1,247,006 |
| SEMTECH CORP | COM | 816850101 | — | 7,540 shares | $1,220,349 |
| FIVE BELOW INC | COM | 33829M101 | — | 6,568 shares | $1,180,861 |
| JATT II ACQUISITION CORP | ORD SHS | G50765109 | — | 101,294 shares | $1,150,700 |
| WARBY PARKER INC | CL A COM | 93403J106 | — | 37,265 shares | $1,130,620 |
| PRAXIS PRECISION MEDICINES I | COM NEW | 74006W207 | — | 3,205 shares | $1,073,002 |
| ECHOSTAR CORP | CL A | 278768106 | CALL | 102 shares | $1,035,300 |
| APPFOLIO INC | COM CL A | 03783C100 | — | 6,368 shares | $1,021,109 |
| ENPHASE ENERGY INC | COM | 29355A107 | CALL | 197 shares | $970,028 |
| NLIGHT INC | COM | 65487K100 | — | 13,652 shares | $950,452 |
| DEFINIUM THERAPEUTICS INC | COM SHS | 24477V105 | — | 20,000 shares | $940,800 |
| IMMUNOME INC | COM | 45257U108 | — | 43,165 shares | $914,666 |
| ABIVAX SA | SPONSORED ADS | 00370M103 | — | 6,708 shares | $893,908 |