# JAT Capital Mgmt LP

> Institutional holdings reported to the SEC as of Q2 2026 on Form 13F. CIK 1834438. Source: https://holderbook.com/funds/1834438-jat-capital-mgmt-lp/

- Reported value: $47.4M
- Positions: 16
- Weight of the ten largest: 93.8%
- Filed: 2026-08-14

A 13F reports long US equity positions only. Short positions, bonds, foreign listings, private holdings and cash are not visible, so this is not the manager's whole book.

## Holdings

| Security | Ticker | Value | Shares | Weight | Quarters held |
|---|---|---|---|---|---|
| WESTERN DIGITAL CORP | [WDC](https://holderbook.com/stocks/WDC/) | $13.7M | 21,500 | 29.0% | 1 |
| ORACLE CORP | [ORCL](https://holderbook.com/stocks/ORCL/) | $7.6M | 51,560 | 15.9% | 1 |
| MICRON TECHNOLOGY INC | [MU](https://holderbook.com/stocks/MU/) | $5.3M | 4,587 | 11.2% | 3 |
| ROBINHOOD MKTS INC | [HOOD](https://holderbook.com/stocks/HOOD/) | $5.2M | 51,372 | 10.9% | 1 |
| APPLIED OPTOELECTRONICS INC | [AAOI](https://holderbook.com/stocks/AAOI/) | $3.9M | 26,500 | 8.3% | 3 |
| IREN LIMITED | [IREN](https://holderbook.com/stocks/IREN/) | $2.4M | 53,500 | 5.2% | 1 |
| LUMENTUM HLDGS INC | [LITE](https://holderbook.com/stocks/LITE/) | $2.0M | 2,350 | 4.3% | 2 |
| COHERENT CORP | [COHR](https://holderbook.com/stocks/COHR/) | $2.0M | 5,000 | 4.2% | 2 |
| SEAGATE TECHNOLOGY HLDNGS PL | [STX](https://holderbook.com/stocks/STX/) | $1.3M | 1,390 | 2.8% | 1 |
| MARVELL TECHNOLOGY INC | [MRVL](https://holderbook.com/stocks/MRVL/) | $1.0M | 3,485 | 2.2% | 1 |
| SERVICENOW INC | [NOW](https://holderbook.com/stocks/NOW/) | $794.2K | 8,000 | 1.7% | 1 |
| SPACE EXPLORATION TECHN CORP | [SPCX](https://holderbook.com/stocks/SPCX/) | $768.9K | 4,500 | 1.6% | 1 |
| VISTRA CORP | [VST](https://holderbook.com/stocks/VST/) | $396.6K | 2,500 | 0.8% | 1 |
| PROSHARES TR II | [VIXY](https://holderbook.com/stocks/VIXY/) | $387.5K | 18,202 | 0.8% | 1 |
| AMAZON COM INC | [AMZN](https://holderbook.com/stocks/AMZN/) | $297.9K | 1,250 | 0.6% | 2 |
| META PLATFORMS INC | [META](https://holderbook.com/stocks/META/) | $285.6K | 507 | 0.6% | 2 |

## What the disclosed book did

Not the fund's return. This is the change in value of the positions disclosed on Form 13F, had they been left untouched, against SPY over the same quarter ends.

| Quarter | Book | Market | Difference | Priced |
|---|---|---|---|---|
| Q2 2026 | +66.5% | +14.8% | +51.7% | 100% |
| Q1 2026 | +9.5% | -4.6% | +14.1% | 100% |
| Q4 2025 | -1.8% | +2.4% | -4.2% | 100% |
| Q3 2025 | +26.8% | +7.8% | +18.9% | 100% |
| Q2 2025 | +80.9% | +10.5% | +70.5% | 93% |
| Q1 2025 | -26.5% | -4.6% | -22.0% | 90% |
| Q4 2024 | +24.3% | +2.1% | +22.1% | 98% |
| Q3 2024 | +0.0% | +5.4% | -5.4% | 83% |

## Quarter by quarter

| Quarter | Value | Positions |
|---|---|---|
| Q2 2026 | $47.4M | 16 |
| Q1 2026 | $59.3M | 10 |
| Q4 2025 | $92.9M | 16 |
| Q3 2025 | $46.3M | 17 |
| Q2 2025 | $30.6M | 14 |
| Q1 2025 | $281.3M | 19 |
| Q4 2024 | $632.0M | 36 |
| Q3 2024 | $621.4M | 37 |
| Q2 2024 | $775.7M | 44 |
| Q1 2024 | $802.8M | 35 |
| Q4 2023 | $529.6M | 31 |
| Q3 2023 | $447.5M | 28 |