Atika Capital Management Llc
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$796.4M
Q ending 2026-03-31
Prior quarter
$949.8M
Q ending 2025-12-31
Change
-16.2% QoQ · +12.0% YoY
Positions
60
reported holdings
Largest positions
All 60 reported positions, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Vertiv Holdings Co | VRT | Shares | $166.9M | 666K |
| Spdr Series Trust | XBI | Put | $54.0M | 4K |
| Eli Lilly & Co | LLY | Shares | $37.8M | 41K |
| Vaneck Etf Trust | SMH | Put | $27.6M | 720 |
| Intuitive Surgical Inc | ISRG | Shares | $26.4M | 57K |
| Ishares Tr | IWM | Put | $24.8M | 1K |
| Echostar Corp | ECHO | Shares | $21.3M | 182K |
| Seagate Technology Hldngs Pl | Shares | $21.0M | 54K | |
| Mastec Inc | MTZ | Shares | $18.5M | 58K |
| Echostar Corp | ECHO | Call | $18.5M | 2K |
| Netflix Inc. | NFLX | Shares | $17.3M | 180K |
| Ciena Corp | CIEN | Shares | $16.9M | 44K |
| Bwx Technologies Inc | BWXT | Shares | $16.9M | 83K |
| Netflix Inc. | NFLX | Call | $15.9M | 2K |
| Terns Pharmaceuticals Inc | 430 | Shares | $15.8M | 300K |
| Teva Pharmaceutical Inds Ltd | TEVA | Shares | $14.4M | 477K |
| Vaneck Etf Trust | GDX | Call | $13.8M | 2K |
| Cloudflare Inc | NET | Shares | $13.4M | 65K |
| Alphabet Inc | GOOG | Shares | $12.4M | 43K |
| Cogent Biosciences Inc | COGT | Shares | $11.3M | 293K |
| Oruka Therapeutics Inc | ORKA | Shares | $11.3M | 230K |
| Dianthus Therapeutics Inc | DNTH | Shares | $10.8M | 129K |
| Western Digital Corp | WDC | Shares | $10.2M | 38K |
| Amazon Com Inc | AMZN | Shares | $9.1M | 44K |
| Ttm Technologies Inc | TTMI | Shares | $9.1M | 93K |
| Five Below Inc | FIVE | Shares | $9.0M | 39K |
| Curtiss Wright Corp | CW | Shares | $8.9M | 13K |
| Guardant Health Inc | GH | Shares | $8.4M | 91K |
| Mercadolibre Inc | MELI | Shares | $7.8M | 5K |
| Appfolio Inc | APPF | Shares | $7.5M | 48K |
| Vaneck Etf Trust | GDX | Shares | $7.3M | 80K |
| United Therapeutics Corp Del | UTHR | Shares | $7.3M | 12K |
| Karman Hldgs Inc | KRMN | Shares | $7.2M | 91K |
| Ferguson Enterprises Inc | FERG | Shares | $6.8M | 29K |
| Protagonist Therapeutics Inc | PTGX | Shares | $6.5M | 62K |
| Clean Harbors Inc | CLH | Shares | $6.3M | 22K |
| Talen Energy Corp | TLN | Shares | $5.9M | 18K |
| Immunome Inc | IMNM | Shares | $5.7M | 263K |
| Meta Platforms Inc | META | Shares | $5.7M | 10K |
| Dbv Technologies S A | DBVT | Shares | $5.7M | 271K |
| Rocket Lab Corp | RKLB | Shares | $5.5M | 86K |
| Heico Corp New | HEI | Shares | $5.3M | 19K |
| Qxo Inc | QXO | Shares | $5.1M | 264K |
| Sitime Corp | SITM | Shares | $5.1M | 15K |
| Intel Corp | INTC | Call | $4.4M | 1K |
| Ge Aerospace | GE | Shares | $4.4M | 16K |
| Ascendis Pharma A/S | Shares | $4.4M | 19K | |
| The Realreal Inc | REAL | Shares | $4.1M | 451K |
| Terns Pharmaceuticals Inc | 430 | Call | $3.8M | 720 |
| Nlight Inc | LASR | Shares | $3.8M | 66K |
| Xenon Pharmaceuticals Inc | XENE | Shares | $3.5M | 60K |
| Bbb Foods Inc | Shares | $3.4M | 95K | |
| Maze Therapeutics Inc | MAZE | Shares | $3.3M | 112K |
| Abivax Sa | ABVX | Shares | $3.2M | 29K |
| Acadia Healthcare Company In | ACHC | Shares | $2.9M | 123K |
| Warby Parker Inc | WRBY | Shares | $2.8M | 135K |
| Krystal Biotech Inc | KRYS | Shares | $2.7M | 11K |
| Bridgebio Pharma Inc | BBIO | Shares | $2.6M | 35K |
| Hut 8 Corp | HUT | Shares | $2.3M | 49K |
| Heico Corp New | HEI/A | Shares | $2.2M | 11K |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.