Atika Capital Management LLC
In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 13, 2025), Atika Capital Management LLC reported 73 stock positions worth $772.3 million. Its top holding was Microsoft (MSFT) at 5.9% of the portfolio, followed by Vertiv Class A (VRT, 5.2%) and Amazon.com (AMZN, 5.1%). Compared with Q3 2024, it opened 25 new positions, sold out of 26, added to 11 and reduced 32. The biggest buy was a new position in Gap (GAP) and the biggest sale Nvidia (NVDA, shares −92%).
- Most Recent 13F
- Q2 2026
- Location
- NEW YORK, NY
- CIK
- 0001599731
- Portfolio Value
- $772.3M (Q4 2024)
- SEC Filing
- 0001214659-25-002515 ↗ filed Feb 13, 2025
Holdings Value
Holdings 73 stocks · $772.3M
| MSFT Microsoft Corp. | 5.87% | 107,500 | $45.3M | No change |
| VRT Vertiv Holdings Co. Class A | 5.19% | 352,951 | $40.1M | Add +0.2% |
| AMZN Amazon.com Inc. | 5.12% | 180,250 | $39.5M | Reduce -22.3% |
| GKOS Glaukos Corp. | 4.65% | 239,500 | $35.9M | Reduce -0.6% |
| INSP Inspire Medical Systems Inc. | 3.78% | 157,600 | $29.2M | Reduce -1.5% |
| ISRG Intuitive Surgical Inc. | 3.62% | 53,600 | $28.0M | Reduce -1.1% |
| LLY Eli Lilly & Co. | 3.26% | 32,650 | $25.2M | No change |
| MLM Martin Marietta Materials | 3.15% | 47,100 | $24.3M | Add +54.4% |
| ANET Arista Networks Inc. | 3.00% | 209,600 | $23.2M | Add +4.0% |
| SPOT Spotify Technology SA | 2.41% | 41,600 | $18.6M | Add +2.2% |
| TLN Talen Energy Corp. | 2.24% | 86,000 | $17.3M | Reduce -3.4% |
| CYBR Cyberark Software Ltd./Israel | 1.96% | 45,500 | $15.2M | Reduce -17.3% |
| APPF Appfolio Inc. Class A | 1.83% | 57,300 | $14.1M | Reduce -2.9% |
| RXST Rxsight Inc. | 1.82% | 408,600 | $14.0M | Reduce -0.5% |
| DASH DoorDash Inc. Class A | 1.75% | 80,400 | $13.5M | Reduce -20.4% |
| GEV GE Vernova Inc. | 1.72% | 40,450 | $13.3M | Reduce -5.9% |
| MELI MercadoLibre Inc. | 1.71% | 7,750 | $13.2M | Reduce -65.2% |
| META Meta Platforms Inc. Class A | 1.65% | 21,800 | $12.8M | Reduce -49.3% |
| BWXT BWX Technologies Inc. | 1.55% | 107,400 | $12.0M | No change |
| GAP The Gap Inc. | 1.48% | 483,200 | $11.4M | New |
| NTRA Natera Inc. | 1.47% | 71,700 | $11.4M | Add +12.0% |
| UTHR United Therapeutics Corp. | 1.42% | 31,000 | $10.9M | Add +12.7% |
| CEG Constellation Energy | 1.37% | 47,400 | $10.6M | Reduce -28.7% |
| VST Vistra Corp. | 1.31% | 73,500 | $10.1M | Reduce -33.2% |
| VRNA Verona Pharma Ltd. | 1.27% | 212,000 | $9.8M | Add +194.4% |
| TARS Tarsus Pharmaceuticals Inc. | 1.27% | 177,200 | $9.8M | New |
| GE General Electric filed as GE AEROSPACE | 1.19% | 55,200 | $9.2M | Reduce -52.0% |
| GLNG Golar LNG Ltd. | 1.09% | 198,500 | $8.4M | New |
| REAL The Realreal Inc. filed as THE REALREAL INC | 1.06% | 745,600 | $8.1M | New |
| ADBE Adobe Inc. | 1.04% | 18,000 | $8.0M | No change |
| NET Cloudflare Inc. Class A | 1.00% | 71,800 | $7.7M | Reduce -17.5% |
| TSM Taiwan Semiconductor-SP ADR | 0.99% | 38,800 | $7.7M | Reduce -31.9% |
| BSX Boston Scientific Corp. | 0.99% | 85,200 | $7.6M | New |
| FRPT Freshpet Inc. | 0.95% | 49,400 | $7.3M | Reduce -25.1% |
| MTZ Mastec Inc. | 0.92% | 52,000 | $7.1M | New |
| TOST Toast Inc. Class A | 0.91% | 192,600 | $7.0M | New |
| SG Sweetgreen Inc. Class A | 0.90% | 217,000 | $7.0M | Reduce -26.4% |
| SHW The Sherwin-Williams Co. | 0.90% | 20,400 | $6.9M | Reduce -50.2% |
| MRVL Marvell Technology Inc. | 0.87% | 61,000 | $6.7M | New |
| NBIX Neurocrine Biosciences Inc. | 0.85% | 48,000 | $6.6M | New |
| GTLB Gitlab Inc. Class A | 0.85% | 116,200 | $6.5M | New |
| SHOP Shopify Inc. Class A | 0.84% | 61,000 | $6.5M | New |
| CRM Salesforce Inc. | 0.84% | 19,400 | $6.5M | New |
| TW Tradeweb Markets Inc. Class A | 0.83% | 48,908 | $6.4M | Reduce -33.7% |
| BECN Beacon Roofing Supply Inc. | 0.82% | 62,400 | $6.3M | Reduce -5.5% |
| NVDA Nvidia Corp. | 0.81% | 46,500 | $6.2M | Reduce -92.5% |
| TBBB BBB Foods Inc. Class A | 0.81% | 220,700 | $6.2M | Add +21.3% |
| LNG Cheniere Energy Inc. | 0.81% | 29,000 | $6.2M | New |
| NFLX Netflix Inc. | 0.79% | 6,850 | $6.1M | Reduce -31.5% |
| ITCI Intra-Cellular Therapies Inc. | 0.79% | 73,000 | $6.1M | Reduce -12.1% |
| MASI Masimo Corp. | 0.79% | 36,800 | $6.1M | New |
| TTD Trade Desk Inc./the Class A filed as THE TRADE DESK INC | 0.78% | 51,300 | $6.0M | New |
| PGNY Progyny Inc. | 0.74% | 332,000 | $5.7M | New |
| DUOL Duolingo | 0.73% | 17,400 | $5.6M | Reduce -0.6% |
| KYMR Kymera Therapeutics Inc. | 0.71% | 136,500 | $5.5M | Add +40.7% |
| GTLS Chart Industries Inc. | 0.68% | 27,600 | $5.3M | New |
| LNTH Lantheus Holdings Inc. | 0.66% | 57,100 | $5.1M | Reduce -21.8% |
| FERG Ferguson Enterprises Inc. | 0.66% | 29,300 | $5.1M | No change |
| EMBJ Embraer SA-Spon ADR | 0.65% | 136,600 | $5.0M | New |
| AFRM Affirm Holdings Inc. | 0.64% | 81,300 | $5.0M | New |
| CAVA Cava Group Inc. | 0.61% | 42,100 | $4.7M | Reduce -50.5% |
| FSLR First Solar Inc. | 0.57% | 25,100 | $4.4M | Add +6.8% |
| ECHO Echostar Corp. Class A | 0.56% | 189,360 | $4.3M | New |
| HEI.A Heico Corp. Class A | 0.56% | 23,300 | $4.3M | New |
| OSCR Oscar Health Inc. Class A | 0.56% | 322,300 | $4.3M | Reduce -3.2% |
| ARM Arm Holdings PLC-ADR | 0.45% | 28,100 | $3.5M | Add +181.0% |
| ALAB Astera Labs Inc. | 0.42% | 24,300 | $3.2M | New |
| SLNO Soleno Therapeutics Inc. | 0.41% | 70,700 | $3.2M | New |
| XENE Xenon Pharmaceuticals Inc. | 0.37% | 72,600 | $2.8M | Reduce -42.4% |
| WRBY Warby Parker Inc. Class A | 0.32% | 103,338 | $2.5M | New |
| AXSM Axsome Therapeutics Inc. | 0.24% | 22,000 | $1.9M | Reduce -61.4% |
| ABVX Abivax SA-ADR | 0.10% | 103,929 | $761K | Reduce -8.5% |
| DRUG Bright Minds Biosciences Inc. | 0.07% | 15,000 | $540K | New |
Options reported separately and not counted above: IWM puts ($44.2M), AAPL puts ($37.6M), TLT puts ($34.9M), TSLA calls ($24.2M), FIVE calls ($10.5M), EW calls ($8.9M), NVO calls ($4.3M), MPT puts ($2.4M), LUMN puts ($1.1M), FLNA puts ($583K), OSCR calls ($460K).
Portfolio Sells Q3 2024 → Q4 2024
| NVDA Nvidia Corp. | Reduce -92.5% | 0.81% | −7.19 |
| MELI MercadoLibre Inc. | Reduce -65.2% | 1.71% | −3.18 |
| ENPH Enphase Energy Inc. | Sold out | 0.00% | −1.68 |
| ARGX Argenx SE - ADR | Sold out | 0.00% | −1.37 |
| ABNB Airbnb Inc. Class A | Sold out | 0.00% | −1.22 |
| S Sentinelone Inc. Class A | Sold out | 0.00% | −1.19 |
| GE General Electric | Reduce -52.0% | 1.19% | −1.13 |
| SFM Sprouts Farmers Market Inc. | Sold out | 0.00% | −1.07 |
| THC Tenet Healthcare Corp. | Sold out | 0.00% | −1.01 |
| PWR Quanta Services Inc. | Sold out | 0.00% | −1.00 |
| META Meta Platforms Inc. Class A | Reduce -49.3% | 1.65% | −0.98 |
| REGN Regeneron Pharmaceuticals | Sold out | 0.00% | −0.96 |
| ALNY Alnylam Pharmaceuticals Inc. | Sold out | 0.00% | −0.91 |
| MDB Mongodb Inc. | Sold out | 0.00% | −0.88 |
| SHW The Sherwin-Williams Co. | Reduce -50.2% | 0.90% | −0.78 |
| ASND Ascendis Pharma A/S | Sold out | 0.00% | −0.69 |
| DXCM Dexcom Inc. | Sold out | 0.00% | −0.62 |
| CNM Core & Main Inc. Class A | Sold out | 0.00% | −0.59 |
| AMD Advanced Micro Devices | Sold out | 0.00% | −0.54 |
| HOV Hovnanian Enterprises-A | Sold out | 0.00% | −0.51 |
| CAVA Cava Group Inc. | Reduce -50.5% | 0.61% | −0.51 |
| INSM Insmed Inc. | Sold out | 0.00% | −0.48 |
| CEG Constellation Energy | Reduce -28.7% | 1.37% | −0.48 |
| POOL Pool Corp. | Sold out | 0.00% | −0.44 |
| CP Canadian Pacific Kansas City | Sold out | 0.00% | −0.41 |
| VRDN Viridian Therapeutics Inc. | Sold out | 0.00% | −0.41 |
| RNAM Avidity Biosciences Inc. | Sold out | 0.00% | −0.36 |
| RXST Rxsight Inc. | Reduce -0.5% | 1.82% | −0.35 |
| AXSM Axsome Therapeutics Inc. | Reduce -61.4% | 0.24% | −0.31 |
| WING Wingstop Inc. | Sold out | 0.00% | −0.27 |
| TMDX Transmedics Group Inc. | Sold out | 0.00% | −0.26 |
| SG Sweetgreen Inc. Class A | Reduce -26.4% | 0.90% | −0.22 |
| MRVI Maravai Lifesciences Hldgs-A | Sold out | 0.00% | −0.21 |
| NTLA Intellia Therapeutics Inc. | Sold out | 0.00% | −0.20 |
| LNTH Lantheus Holdings Inc. | Reduce -21.8% | 0.66% | −0.20 |
| OSCR Oscar Health Inc. Class A | Reduce -3.2% | 0.56% | −0.19 |
| XENE Xenon Pharmaceuticals Inc. | Reduce -42.4% | 0.37% | −0.16 |
| TW Tradeweb Markets Inc. Class A | Reduce -33.7% | 0.83% | −0.15 |
| CATX Perspective Therapeutics Inc. | Sold out | 0.00% | −0.14 |
| MPT Medical Properties Trust Inc. | Sold out | 0.00% | −0.12 |
| VST Vistra Corp. | Reduce -33.2% | 1.31% | −0.08 |
| TSM Taiwan Semiconductor-SP ADR | Reduce -31.9% | 0.99% | −0.07 |
| ABVX Abivax SA-ADR | Reduce -8.5% | 0.10% | −0.04 |
| FRPT Freshpet Inc. | Reduce -25.1% | 0.95% | −0.02 |
| NFLX Netflix Inc. | Reduce -31.5% | 0.79% | +0.03 |
| ITCI Intra-Cellular Therapies Inc. | Reduce -12.1% | 0.79% | +0.14 |
| INSP Inspire Medical Systems Inc. | Reduce -1.5% | 3.78% | +0.17 |
| DUOL Duolingo | Reduce -0.6% | 0.73% | +0.20 |
| DASH DoorDash Inc. Class A | Reduce -20.4% | 1.75% | +0.20 |
| BECN Beacon Roofing Supply Inc. | Reduce -5.5% | 0.82% | +0.21 |
Portfolio Buys Q3 2024 → Q4 2024
| GAP The Gap Inc. | New | 1.48% | +1.48 |
| VRT Vertiv Holdings Co. Class A | Add +0.2% | 5.19% | +1.45 |
| MLM Martin Marietta Materials | Add +54.4% | 3.15% | +1.39 |
| TARS Tarsus Pharmaceuticals Inc. | New | 1.27% | +1.27 |
| GLNG Golar LNG Ltd. | New | 1.09% | +1.09 |
| REAL The Realreal Inc. | New | 1.06% | +1.06 |
| VRNA Verona Pharma Ltd. | Add +194.4% | 1.27% | +1.05 |
| BSX Boston Scientific Corp. | New | 0.99% | +0.99 |
| ANET Arista Networks Inc. | Add +4.0% | 3.00% | +0.93 |
| MTZ Mastec Inc. | New | 0.92% | +0.92 |
| TOST Toast Inc. Class A | New | 0.91% | +0.91 |
| MRVL Marvell Technology Inc. | New | 0.87% | +0.87 |
| NBIX Neurocrine Biosciences Inc. | New | 0.85% | +0.85 |
| GTLB Gitlab Inc. Class A | New | 0.85% | +0.85 |
| CRM Salesforce Inc. | New | 0.84% | +0.84 |
| SHOP Shopify Inc. Class A | New | 0.84% | +0.84 |
| LNG Cheniere Energy Inc. | New | 0.81% | +0.81 |
| SPOT Spotify Technology SA | Add +2.2% | 2.41% | +0.81 |
| MASI Masimo Corp. | New | 0.79% | +0.79 |
| TTD Trade Desk Inc./the Class A | New | 0.78% | +0.78 |
| PGNY Progyny Inc. | New | 0.74% | +0.74 |
| GTLS Chart Industries Inc. | New | 0.68% | +0.68 |
| EMBJ Embraer SA-Spon ADR | New | 0.65% | +0.65 |
| AFRM Affirm Holdings Inc. | New | 0.64% | +0.64 |
| NTRA Natera Inc. | Add +12.0% | 1.47% | +0.60 |
| ECHO Echostar Corp. Class A | New | 0.56% | +0.56 |
| HEI.A Heico Corp. Class A | New | 0.56% | +0.56 |
| ALAB Astera Labs Inc. | New | 0.42% | +0.42 |
| SLNO Soleno Therapeutics Inc. | New | 0.41% | +0.41 |
| UTHR United Therapeutics Corp. | Add +12.7% | 1.42% | +0.36 |
| WRBY Warby Parker Inc. Class A | New | 0.32% | +0.32 |
| ARM Arm Holdings PLC-ADR | Add +181.0% | 0.45% | +0.30 |
| TBBB BBB Foods Inc. Class A | Add +21.3% | 0.81% | +0.22 |
| KYMR Kymera Therapeutics Inc. | Add +40.7% | 0.71% | +0.22 |
| DRUG Bright Minds Biosciences Inc. | New | 0.07% | +0.07 |
| FSLR First Solar Inc. | Add +6.8% | 0.57% | −0.05 |
Options Activity Q3 2024 → Q4 2024
| IWM iShares Russell 2000 ETF | put | New | 2,000 | $44.2M |
| AAPL Apple Inc. | put | New | 1,500 | $37.6M |
| TLT iShares 20+ Year Treasury BD | put | New | 4,000 | $34.9M |
| TSLA Tesla Inc. | call | New | 600 | $24.2M |
| FIVE Five Below | call | New | 1,000 | $10.5M |
| AMD Advanced Micro Devices | call | Sold out | 550 | $9.0Mbefore exit |
| EW Edwards Lifesciences Corp. | call | New | 1,200 | $8.9M |
| TEM Tempus AI Inc. Class A | put | Sold out | 1,166 | $6.6Mbefore exit |
| ALAB Astera Labs Inc. | call | Sold out | 900 | $4.7Mbefore exit |
| NVO Novo-Nordisk A/S-Spons ADR | call | New | 500 | $4.3M |
| INMD Inmode Ltd. | put | Sold out | 1,856 | $3.1Mbefore exit |
| URA Global X Uranium ETF | call | Sold out | 1,000 | $2.9Mbefore exit |
| GTLB Gitlab Inc. Class A | call | Sold out | 500 | $2.6Mbefore exit |
| MPT Medical Properties Trust Inc. | put | Reduce -14.3% | 6,000 | $2.4M |
| LEVI Levi Strauss & Co. Class A | call | Sold out | 1,000 | $2.2Mbefore exit |
| FLNA Filana Therapeutics Inc. | put | Add +97.6% | 2,470 | $583K |
| OSCR Oscar Health Inc. Class A | call | New | 342 | $460K |
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 62 | $1.0B | VRT, STX, AMD, LLY, INTC |
| Q1 2026 | 52 | $633.6M | VRT, LLY, ISRG, ECHO, STX |
| Q4 2025 | 64 | $718.1M | VRT, LLY, ISRG, TEVA, SHOP |
| Q3 2025 | 76 | $1.2B | VRT, AMZN, MSFT, SPOT, MLM |
| Q2 2025 | 57 | $957.3M | AMZN, VRT, MSFT, SPOT, MLM |
| Q1 2025 | 53 | $651.3M | AMZN, MSFT, VRT, SPOT, LLY |
| Q4 2024 | 73 | $772.3M | MSFT, VRT, AMZN, GKOS, INSP |
| Q3 2024 | 74 | $935.1M | NVDA, MSFT, MELI, AMZN, VRT |
| Q2 2024 | 75 | $862.5M | NVDA, MSFT, AMZN, VRT, MELI |
| Q1 2024 | 79 | $891.5M | NVDA, SWAV, MSFT, VRT, INSP |