Atika Capital Management LLC 13F holdings, Q2 2026
Holdings as of June 30, 2026 · filings on SEC EDGAR · this is the latest filing on record
Atika Capital Management LLC disclosed 62 US equity positions worth $1.0bn in its Q2 2026 13F filing. The largest position was VRT at 22.1% of the reported book, followed by STX and AMD. Against the Q1 2026 filing, it opened 20 new positions, added to 13 and reduced 8 among the top 50 holdings.
What did Atika Capital Management LLC own in Q2 2026? Top 50 positions
| # | Stock | Sector | Weight | Value | Shares | Δ shares | vs Q1 2026 |
|---|---|---|---|---|---|---|---|
| 1 | VRT VERTIV HOLDINGS CO | Industrials | 22.1% | $223.0m | 666,100 | 0% | held |
| 2 | STX SEAGATE TECHNOLOGY HLDNGS PL | Technology | 7.6% | $77.1m | 79,865 | 49% | added |
| 3 | AMD ADVANCED MICRO DEVICES INC | Technology | 5.5% | $55.5m | 95,500 | – | new |
| 4 | LLY ELI LILLY & CO | Healthcare | 4.9% | $49.3m | 41,100 | 0% | held |
| 5 | INTC INTEL CORP | Technology | 3.7% | $36.9m | 264,000 | – | new |
| 6 | ECHO ECHOSTAR CORP | Communication Services | 3.3% | $33.6m | 331,400 | 82% | added |
| 7 | GH GUARDANT HEALTH INC | Healthcare | 2.7% | $27.2m | 181,000 | 99% | added |
| 8 | CIEN CIENA CORP | Technology | 2.4% | $23.9m | 48,768 | 12% | added |
| 9 | ISRG INTUITIVE SURGICAL INC | Healthcare | 2.3% | $22.8m | 57,216 | 0% | held |
| 10 | VPG VISHAY PRECISION GROUP INC | Technology | 1.8% | $17.7m | 118,000 | – | new |
| 11 | MRVL MARVELL TECHNOLOGY INC | Technology | 1.7% | $17.3m | 58,000 | – | new |
| 12 | RKLB ROCKET LAB CORP | Industrials | 1.7% | $17.2m | 169,000 | 97% | added |
| 13 | WDC WESTERN DIGITAL CORP | Technology | 1.7% | $16.9m | 26,477 | -30% | reduced |
| 14 | RVMD REVOLUTION MEDICINES INC | Healthcare | 1.6% | $16.5m | 88,000 | – | new |
| 15 | ASND ASCENDIS PHARMA A/S | Healthcare | 1.6% | $16.3m | 61,000 | – | new |
| 16 | DNTH DIANTHUS THERAPEUTICS INC | Healthcare | 1.6% | $16.1m | 165,000 | 28% | added |
| 17 | AXSM AXSOME THERAPEUTICS INC. | Healthcare | 1.5% | $15.4m | 63,000 | – | new |
| 18 | TEVA TEVA PHARMACEUTICAL INDS LTD | Healthcare | 1.5% | $14.9m | 440,000 | -8% | reduced |
| 19 | MTZ MASTEC INC | Industrials | 1.5% | $14.8m | 35,500 | -38% | reduced |
| 20 | SN SHARKNINJA INC | Consumer Cyclical | 1.3% | $13.4m | 88,000 | – | new |
| 21 | NFLX NETFLIX INC. | Communication Services | 1.3% | $12.9m | 180,000 | 0% | held |
| 22 | CW CURTISS WRIGHT CORP | Industrials | 1.2% | $12.1m | 16,000 | 23% | added |
| 23 | KYMR KYMERA THERAPEUTICS INC | Healthcare | 1.2% | $11.9m | 104,000 | – | new |
| 24 | SITM SITIME CORP | Technology | 1.1% | $11.2m | 15,000 | 1% | added |
| 25 | TWST TWIST BIOSCIENCE CORP | Healthcare | 1.1% | $11.1m | 108,000 | – | new |
| 26 | REAL THE REALREAL INC | Consumer Cyclical | 1.1% | $11.1m | 940,000 | 108% | added |
| 27 | COGT COGENT BIOSCIENCES INC | Healthcare | 1.0% | $10.5m | 272,000 | -7% | reduced |
| 28 | BWXT BWX TECHNOLOGIES INC | Industrials | 1.0% | $10.5m | 54,000 | -35% | reduced |
| 29 | AMZN AMAZON COM INC | Consumer Cyclical | 1.0% | $10.5m | 44,000 | 1% | added |
| 30 | TBBB BBB FOODS INC | Consumer Defensive | 1.0% | $10.4m | 250,000 | 163% | added |
| 31 | AXGN AXOGEN INC | Healthcare | 1.0% | $10.2m | 221,000 | – | new |
| 32 | NOK NOKIA CORP | Technology | 1.0% | $10.0m | 750,000 | – | new |
| 33 | ORKA ORUKA THERAPEUTICS INC | Healthcare | 0.9% | $9.5m | 100,000 | -57% | reduced |
| 34 | TTMI TTM TECHNOLOGIES INC | Technology | 0.9% | $9.4m | 50,000 | -46% | reduced |
| 35 | CRL CHARLES RIV LABS INTL INC | Healthcare | 0.9% | $8.6m | 38,000 | – | new |
| 36 | ACMR ACM RESH INC | Technology | 0.8% | $8.0m | 63,000 | – | new |
| 37 | ROIV ROIVANT SCIENCES LTD | Healthcare | 0.8% | $7.7m | 217,000 | – | new |
| 38 | MELI MERCADOLIBRE INC | Consumer Cyclical | 0.8% | $7.7m | 4,510 | 0% | held |
| 39 | APPF APPFOLIO INC | Technology | 0.8% | $7.6m | 47,500 | 0% | held |
| 40 | PTGX PROTAGONIST THERAPEUTICS INC | Healthcare | 0.8% | $7.6m | 62,100 | 0% | held |
| 41 | RDDT REDDIT INC | Communication Services | 0.7% | $7.5m | 43,000 | – | new |
| 42 | SMTC SEMTECH CORP | Technology | 0.7% | $7.4m | 46,000 | – | new |
| 43 | FIVE FIVE BELOW INC | Consumer Cyclical | 0.7% | $7.2m | 40,000 | 1% | added |
| 44 | FERG FERGUSON ENTERPRISES INC | Industrials | 0.7% | $7.0m | 29,300 | 0% | held |
| 45 | DFTX DEFINIUM THERAPEUTICS INC | Healthcare | 0.6% | $5.7m | 122,000 | – | new |
| 46 | IMNM IMMUNOME INC | Healthcare | 0.6% | $5.6m | 262,900 | 0% | held |
| 47 | HUT HUT 8 CORP | Financial Services | 0.5% | $5.1m | 44,500 | -10% | reduced |
| 48 | WRBY WARBY PARKER INC | Healthcare | 0.5% | $4.6m | 150,000 | 11% | added |
| 49 | JATT II ACQUISITION CORP | 0.5% | $4.5m | 400,000 | – | new | |
| 50 | PRAX PRAXIS PRECISION MEDICINES I | Healthcare | 0.4% | $4.3m | 12,900 | – | new |
Weights are shares of the reported long US equity book (options excluded). Values are as filed, normalised to whole dollars. Share changes compare against the immediately preceding filing only.