Atika Capital Management LLC 13F holdings, Q3 2025
Holdings as of September 30, 2025 · filings on SEC EDGAR · latest filing →
Atika Capital Management LLC disclosed 76 US equity positions worth $1.2bn in its Q3 2025 13F filing. The largest position was VRT at 7.9% of the reported book, followed by AMZN and MSFT. Against the Q2 2025 filing, it opened 11 new positions, added to 18 and reduced 13 among the top 50 holdings.
What did Atika Capital Management LLC own in Q3 2025? Top 50 positions
| # | Stock | Sector | Weight | Value | Shares | Δ shares | vs Q2 2025 |
|---|---|---|---|---|---|---|---|
| 1 | VRT VERTIV HOLDINGS CO | Industrials | 7.9% | $92.5m | 613,100 | 0% | held |
| 2 | AMZN AMAZON COM INC | Consumer Cyclical | 7.4% | $87.2m | 397,049 | -0% | held |
| 3 | MSFT MICROSOFT CORP | Technology | 7.3% | $85.5m | 165,000 | 4% | added |
| 4 | SPOT SPOTIFY TECHNOLOGY S A | Communication Services | 3.7% | $43.9m | 62,870 | 1% | added |
| 5 | MLM MARTIN MARIETTA MATLS INC | Basic Materials | 3.7% | $43.2m | 68,483 | -6% | reduced |
| 6 | BWXT BWX TECHNOLOGIES INC | Industrials | 3.4% | $40.1m | 217,400 | 3% | added |
| 7 | ANET ARISTA NETWORKS INC | Technology | 2.9% | $33.7m | 231,208 | -12% | reduced |
| 8 | LLY ELI LILLY & CO | Healthcare | 2.7% | $31.4m | 41,100 | 0% | held |
| 9 | CEG CONSTELLATION ENERGY CORP | Utilities | 2.7% | $31.2m | 94,800 | 0% | held |
| 10 | TLN TALEN ENERGY CORP | Utilities | 2.5% | $29.5m | 69,300 | 16% | added |
| 11 | STX SEAGATE TECHNOLOGY HLDNGS PL | Technology | 2.4% | $27.9m | 118,096 | – | new |
| 12 | GEV GE VERNOVA INC | Industrials | 2.2% | $26.1m | 42,439 | -0% | held |
| 13 | META META PLATFORMS INC | Communication Services | 2.2% | $26.1m | 35,500 | -7% | reduced |
| 14 | ISRG INTUITIVE SURGICAL INC | Healthcare | 2.2% | $25.6m | 57,236 | -4% | reduced |
| 15 | VST VISTRA CORP | Utilities | 2.1% | $24.1m | 123,000 | -1% | reduced |
| 16 | CYBERARK SOFTWARE LTD | 1.8% | $21.7m | 44,855 | 15% | added | |
| 17 | NFLX NETFLIX INC | Communication Services | 1.8% | $21.6m | 18,000 | 50% | added |
| 18 | NET CLOUDFLARE INC | Technology | 1.8% | $21.0m | 98,010 | 42% | added |
| 19 | NBIS NEBIUS GROUP N.V. | Communication Services | 1.7% | $20.2m | 179,880 | 159% | added |
| 20 | RBLX ROBLOX CORP | Communication Services | 1.7% | $19.7m | 142,500 | 31% | added |
| 21 | VRNA VERONA PHARMA PLC | 1.6% | $18.8m | 176,000 | -17% | reduced | |
| 22 | MELI MERCADOLIBRE INC | Consumer Cyclical | 1.6% | $18.5m | 7,930 | -21% | reduced |
| 23 | HOOD ROBINHOOD MKTS INC | Financial Services | 1.5% | $17.3m | 121,000 | -45% | reduced |
| 24 | GKOS GLAUKOS CORP | Healthcare | 1.5% | $17.3m | 212,400 | -34% | reduced |
| 25 | DASH DOORDASH INC | Consumer Cyclical | 1.5% | $17.2m | 63,201 | -5% | reduced |
| 26 | CDTX CIDARA THERAPEUTICS INC | 1.3% | $15.1m | 157,320 | – | new | |
| 27 | INSP INSPIRE MED SYS INC | Healthcare | 1.2% | $13.9m | 187,600 | 16% | added |
| 28 | NVDA NVIDIA CORPORATION | Technology | 1.2% | $13.8m | 73,900 | 26% | added |
| 29 | TSLA TESLA INC | Consumer Cyclical | 1.2% | $13.8m | 31,000 | – | new |
| 30 | INSM INSMED INC | Healthcare | 1.2% | $13.7m | 95,000 | – | new |
| 31 | ADBE ADOBE INC | Technology | 1.2% | $13.7m | 38,698 | 74% | added |
| 32 | ROKU ROKU INC | Communication Services | 1.1% | $13.3m | 133,000 | 198% | added |
| 33 | APPF APPFOLIO INC | Technology | 1.0% | $12.3m | 44,500 | 0% | held |
| 34 | SHOP SHOPIFY INC | Technology | 1.0% | $11.7m | 78,500 | 13% | added |
| 35 | CIEN CIENA CORP | Technology | 1.0% | $11.7m | 80,000 | – | new |
| 36 | ALNY ALNYLAM PHARMACEUTICALS INC | Healthcare | 0.9% | $10.1m | 22,206 | -20% | reduced |
| 37 | GE GE AEROSPACE | Industrials | 0.8% | $9.9m | 33,000 | 5% | added |
| 38 | EYE NATIONAL VISION HLDGS INC | Consumer Cyclical | 0.7% | $8.8m | 301,000 | -27% | reduced |
| 39 | ASML ASML HOLDING N V | Technology | 0.7% | $8.5m | 8,740 | – | new |
| 40 | MTZ MASTEC INC | Industrials | 0.7% | $8.4m | 39,500 | -20% | reduced |
| 41 | GH GUARDANT HEALTH INC | Healthcare | 0.7% | $8.3m | 133,000 | 49% | added |
| 42 | NTRA NATERA INC | Healthcare | 0.6% | $7.5m | 46,497 | 0% | held |
| 43 | DHI D R HORTON INC | Consumer Cyclical | 0.6% | $7.5m | 44,000 | – | new |
| 44 | DUOL DUOLINGO INC | Technology | 0.6% | $7.1m | 22,200 | 5% | added |
| 45 | FIVE FIVE BELOW INC | Consumer Cyclical | 0.6% | $7.0m | 45,500 | – | new |
| 46 | MLYS MINERALYS THERAPEUTICS INC | Healthcare | 0.6% | $6.6m | 174,000 | – | new |
| 47 | FERG FERGUSON ENTERPRISES INC | Industrials | 0.6% | $6.6m | 29,300 | 0% | held |
| 48 | AXSM AXSOME THERAPEUTICS INC | Healthcare | 0.5% | $6.0m | 49,000 | 6% | added |
| 49 | ABVX ABIVAX SA | 0.5% | $5.9m | 69,000 | – | new | |
| 50 | PTGX PROTAGONIST THERAPEUTICS INC | Healthcare | 0.5% | $5.5m | 83,000 | – | 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.