JAT Capital Mgmt LP
GREENWICH, CT
$47m in 16 US stocks at the end of 30 June 2026. The top 10 are 93.8% of the money. It changed about 78.5% of the portfolio this quarter.
Value
$47m
Stocks
16
Top 10 share
93.8%
Turnover
78.5%
What changed this quarter
New
Bought for the first time this quarter.
- Western DigitalWDC29.0% of the fund
- OracleORCL15.9% of the fund
- Robinhood MarketsHOOD10.9% of the fund
- IrenIREN5.2% of the fund
- Seagate Technology HoldingsSTX2.8% of the fund
- Marvell TechnologyMRVL2.2% of the fund
- ServiceNowNOW1.7% of the fund
- Space Exploration TechnologiesSPCX1.6% of the fund
- VistraVST0.8% of the fund
- Proshares TR IIVIXY0.8% of the fund
Added
Bought more of a stock they already held.
- Applied OptoelectronicsAAOI8.3% of the fund+165%
Cut
Sold some of their stake.
- Micron TechnologyMU11.2% of the fund-86%
- Lumentum HoldingsLITE4.3% of the fund-22%
- CoherentCOHR4.2% of the fund-87%
- Amazon.comAMZN0.6% of the fund-97%
- Meta PlatformsMETA0.6% of the fund-98%
Sold out
Sold their entire stake.
- NvidiaNVDA-100%
- Constellation EnergyCEG-100%
- Core ScientificCORZ-100%
- IntelINTC-100%
Holdings
- Space Exploration TechnologiesSPCX
- Share
- 1.6%
- Value
- $768,870
- Shares
- 4,500
New
- Proshares TR IIVIXY
- Share
- 0.8%
- Value
- $387,521
- Shares
- 18,202
New
| Company | Share of fund | Value | Shares | Change |
|---|---|---|---|---|
| Western DigitalWDC | 29.0% | $14m | 21,500 | New |
| OracleORCL | 15.9% | $8m | 51,560 | New |
| Micron TechnologyMU | 11.2% | $5m | 4,587 | -86% |
| Robinhood MarketsHOOD | 10.9% | $5m | 51,372 | New |
| Applied OptoelectronicsAAOI | 8.3% | $4m | 26,500 | +165% |
| IrenIREN | 5.2% | $2m | 53,500 | New |
| Lumentum HoldingsLITE | 4.3% | $2m | 2,350 | -22% |
| CoherentCOHR | 4.2% | $2m | 5,000 | -87% |
| Seagate Technology HoldingsSTX | 2.8% | $1m | 1,390 | New |
| Marvell TechnologyMRVL | 2.2% | $1m | 3,485 | New |
| ServiceNowNOW | 1.7% | $794,240 | 8,000 | New |
| Space Exploration TechnologiesSPCX | 1.6% | $768,870 | 4,500 | New |
| VistraVST | 0.8% | $396,575 | 2,500 | New |
| Proshares TR IIVIXY | 0.8% | $387,521 | 18,202 | New |
| Amazon.comAMZN | 0.6% | $297,925 | 1,250 | -97% |
| Meta PlatformsMETA | 0.6% | $285,588 | 507 | -98% |
Over time and by industry
Value over time
Jun '25
Dec '25
Jun '26
Value is up 55.1% since 30 June 2025.
Where the money is
Technology81.1%
Financial services16.0%
Utilities0.8%
Retail & consumer0.6%
Media & telecom0.6%
Other0.8%
From the fund's 13F filings. They list US stocks and options only, 45 days after each quarter, and leave out cash, bonds, shorts and foreign shares.