JAT Capital Mgmt LP
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), JAT Capital Mgmt LP reported 16 stock positions worth $47.4 million. Its top holding was Western Digital (WDC) at 29.0% of the portfolio, followed by Oracle (ORCL, 15.9%) and Micron Technology (MU, 11.2%). Compared with Q1 2026, it opened 10 new positions, sold out of 4, added to 1 and reduced 5. The biggest buy was a new position in Western Digital (WDC) and the biggest sale Meta Platforms Class A (META, shares −98%).
- Most Recent 13F
- Q2 2026
- Location
- GREENWICH, CT
- CIK
- 0001834438
- Portfolio Value
- $47.4M (Q2 2026)
- SEC Filing
- 0001892688-26-000130 ↗ filed Aug 14, 2026
Holdings Value
Holdings 16 stocks · $47.4M
| WDC Western Digital Corp. | 28.97% | 21,500 | $13.7M | New |
| ORCL Oracle Corp. | 15.94% | 51,560 | $7.6M | New |
| MU Micron Technology Inc. | 11.17% | 4,587 | $5.3M | Reduce -86.3% |
| HOOD Robinhood Markets Inc. Class A | 10.87% | 51,372 | $5.2M | New |
| AAOI Applied Optoelectronics Inc. | 8.28% | 26,500 | $3.9M | Add +164.6% |
| IREN Iren Ltd. filed as IREN LIMITED | 5.16% | 53,500 | $2.4M | New |
| LITE Lumentum Holdings Inc. | 4.25% | 2,350 | $2.0M | Reduce -21.7% |
| COHR Coherent Corp. | 4.16% | 5,000 | $2.0M | Reduce -86.8% |
| STX Seagate Technology Holdings | 2.83% | 1,390 | $1.3M | New |
| MRVL Marvell Technology Inc. | 2.19% | 3,485 | $1.0M | New |
| NOW ServiceNow Inc. | 1.68% | 8,000 | $794K | New |
| SPCX Space Exploration Techn Class A | 1.62% | 4,500 | $769K | New |
| VST Vistra Corp. | 0.84% | 2,500 | $397K | New |
| VIXY Proshares Vix Short-Term Fut | 0.82% | 18,202 | $388K | New |
| AMZN Amazon.com Inc. | 0.63% | 1,250 | $298K | Reduce -97.4% |
| META Meta Platforms Inc. Class A | 0.60% | 507 | $286K | Reduce -97.7% |
Portfolio Sells Q1 2026 → Q2 2026
| META Meta Platforms Inc. Class A | Reduce -97.7% | 0.60% | −20.71 |
| AMZN Amazon.com Inc. | Reduce -97.4% | 0.63% | −16.21 |
| NVDA Nvidia Corp. | Sold out | 0.00% | −15.87 |
| COHR Coherent Corp. | Reduce -86.8% | 4.16% | −11.03 |
| MU Micron Technology Inc. | Reduce -86.3% | 11.17% | −7.91 |
| CEG Constellation Energy | Sold out | 0.00% | −3.53 |
| CORZ Core Scientific Inc. | Sold out | 0.00% | −1.65 |
| INTC Intel Corp. | Sold out | 0.00% | −1.55 |
| LITE Lumentum Holdings Inc. | Reduce -21.7% | 4.25% | +0.70 |
Portfolio Buys Q1 2026 → Q2 2026
| WDC Western Digital Corp. | New | 28.97% | +28.97 |
| ORCL Oracle Corp. | New | 15.94% | +15.94 |
| HOOD Robinhood Markets Inc. Class A | New | 10.87% | +10.87 |
| AAOI Applied Optoelectronics Inc. | Add +164.6% | 8.28% | +6.85 |
| IREN Iren Ltd. | New | 5.16% | +5.16 |
| STX Seagate Technology Holdings | New | 2.83% | +2.83 |
| MRVL Marvell Technology Inc. | New | 2.19% | +2.19 |
| NOW ServiceNow Inc. | New | 1.68% | +1.68 |
| SPCX Space Exploration Techn Class A | New | 1.62% | +1.62 |
| VST Vistra Corp. | New | 0.84% | +0.84 |
| VIXY Proshares Vix Short-Term Fut | New | 0.82% | +0.82 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 16 | $47.4M | WDC, ORCL, MU, HOOD, AAOI |
| Q1 2026 | 10 | $59.3M | META, MU, AMZN, NVDA, COHR |
| Q4 2025 | 16 | $92.9M | BE, NFLX, HOOD, TSLA, CLS |
| Q3 2025 | 17 | $46.3M | U, AMZN, ETSY, RBLX, RDDT |
| Q2 2025 | 14 | $30.6M | TSLA, CORZ, DELL, PLTR, HUT |
| Q1 2025 | 18 | $261.9M | CORZ, CLS, HUT, ORCL, CEG |
| Q4 2024 | 36 | $571.4M | CORZ, CEG, AAOI, APP, COHR |
| Q3 2024 | 35 | $584.5M | CORZ, ROKU, CEG, ESTC, NVDA |
| Q2 2024 | 43 | $639.0M | CEG, MU, WDC, FSLR, CAR |
| Q1 2024 | 34 | $753.8M | NXH, AMD, WDC, CRM, PINS |