Q2 2026 13F · SEC CIK 1834438
JAT Capital Mgmt LP
Hedge fundFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗
- Reported 13F value
- $47.4M
- Reported positions
- 16
- Top holdings a year, 3 yrs
- +30.9%
- Assets under management
- $228.5M
JAT Capital Mgmt LP is a hedge fund that reported 16 positions worth $47.4M in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Western Digital Corp Com (WDC, 29.0%), Oracle Corp (ORCL, 15.9%), Micron Technology Inc (MU, 11.2%). A portfolio copying its top holdings returned 30.9% a year over the last 3 years, against 20.4% for the S&P 500.
JAT Capital Mgmt LP holdings all 16 positions.
Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.
| Stock | % of 13F value | Share change | Reported value |
|---|---|---|---|
| WDCWestern Digital Corp Com | 29.0% | — | $13.7M |
| ORCLOracle Corp | 15.9% | — | $7.6M |
| MUMicron Technology Inc | 11.2% | -86.3% | $5.3M |
| HOODRobinhood Mkts Inc | 10.9% | — | $5.2M |
| AAOIApplied Optoelectronics Inc | 8.3% | +164.6% | $3.9M |
| IRENIren Limited | 5.2% | — | $2.4M |
| LITELumentum Hldgs Inc | 4.3% | -21.7% | $2.0M |
| COHRCoherent Corp | 4.2% | -86.8% | $2.0M |
| STXSeagate Technology Hldngs Pl | 2.8% | — | $1.3M |
| MRVLMarvell Technology Inc | 2.2% | — | $1.0M |
| NOWServicenow Inc | 1.7% | — | $794K |
| SPCXSpace Exploration Techn Corp | 1.6% | — | $769K |
| VSTVistra Corp | 0.8% | — | $397K |
| VIXYProshares Tr II | 0.8% | — | $388K |
| AMZNAmazon Com Inc | 0.6% | -97.4% | $298K |
| METAMeta Platforms Inc | 0.6% | -97.7% | $286K |
What JAT Capital Mgmt LP bought and sold in Q2 2026, against Q1 2026.
New positions
- WDC Western Digital Corp Com29.0% of 13F
- ORCL Oracle Corp15.9% of 13F
- HOOD Robinhood Mkts Inc10.9% of 13F
- IREN Iren Limited5.2% of 13F
- STX Seagate Technology Hldngs Pl2.8% of 13F
- MRVL Marvell Technology Inc2.2% of 13F
- NOW Servicenow Inc1.7% of 13F
- SPCX Space Exploration Techn Corp1.6% of 13F
Added to
- AAOI Applied Optoelectronics Inc+164.6% shares
Reduced
- META Meta Platforms Inc-97.7% shares
- AMZN Amazon Com Inc-97.4% shares
- COHR Coherent Corp-86.8% shares
- MU Micron Technology Inc-86.3% shares
- LITE Lumentum Hldgs Inc-21.7% shares
Sold out
- NVDA Nvidia Corporationwas 15.9%
- CEG Constellation Energy Corpwas 3.5%
- CORZ Core Scientific Inc Newwas 1.6%
- INTC Intel Corpwas 1.6%
Share counts compared with the Q1 2026 13F; a split also changes share counts.
How the holdings did against the S&P 500.
- 1 year
- +18.4% /yr
- S&P 500 +20.1%
- 3 years
- +30.9% /yr
- S&P 500 +20.4%
- 5 years
- +13.8% /yr
- S&P 500 +13.0%
A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.
Reported 13F value by quarter.
| Quarter | 13F 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 | $261.9M | 18 |
| Q4 2024 | $571.4M | 36 |
| Q3 2024 | $584.5M | 35 |
| Q2 2024 | $639.0M | 43 |
| Q1 2024 | $753.8M | 34 |
| Q4 2023 | $529.6M | 31 |
| Q3 2023 | $435.0M | 28 |
Questions about JAT Capital Mgmt LP's portfolio
What stocks does JAT Capital Mgmt LP own?
JAT Capital Mgmt LP's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 16 positions worth $47.4M. The largest are Western Digital Corp Com (WDC) at 29.0%, Oracle Corp (ORCL) at 15.9%, Micron Technology Inc (MU) at 11.2%, Robinhood Mkts Inc (HOOD) at 10.9% and Applied Optoelectronics Inc (AAOI) at 8.3%.
What did JAT Capital Mgmt LP buy last quarter?
In Q2 2026, JAT Capital Mgmt LP added a new position in Western Digital Corp Com (WDC), a new position in Oracle Corp (ORCL), a new position in Robinhood Mkts Inc (HOOD), a new position in Iren Limited (IREN), a new position in Seagate Technology Hldngs Pl (STX) and Applied Optoelectronics Inc (AAOI) (+164.6% shares), compared with its Q1 2026 filing.
What did JAT Capital Mgmt LP sell last quarter?
In Q2 2026, JAT Capital Mgmt LP sold all of Nvidia Corporation (NVDA), sold all of Constellation Energy Corp (CEG), sold all of Core Scientific Inc New (CORZ), sold all of Intel Corp (INTC), Meta Platforms Inc (META) (-97.7% shares), Amazon Com Inc (AMZN) (-97.4% shares) and Coherent Corp (COHR) (-86.8% shares), compared with its Q1 2026 filing.
How has JAT Capital Mgmt LP's portfolio performed?
A portfolio copying JAT Capital Mgmt LP's 20 largest 13F holdings each quarter, from the day each filing was public, returned +30.9% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +18.4% against +20.1%. Over 5 years: +13.8% a year against +13.0%.
When is JAT Capital Mgmt LP's next 13F filing due?
13F filings are due 45 days after each quarter ends. JAT Capital Mgmt LP's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.
How much money does JAT Capital Mgmt LP manage?
JAT Capital Mgmt LP reported $228.5M of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $47.4M.