JC
JAT Capital Mgmt LP 13F Portfolio & Top Holdings (Q2 2026)
JAT Capital Mgmt LPCIK: 0001834438
High-turnover traderSector-focusedContrarian
Total reported value
$47.4M
Reporting period: 2026-06-30 · Number of holdings: 16
JAT Capital Mgmt LP disclosed 16 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $47.4M and a quarterly turnover rate of 159.9%.
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Personality snowflake
- Concentration
- 59.48
- Portfolio Stability
- 100
- Momentum
- 0
- Sector conviction
- 100
- Diversification
- 32
- Sizing Uniformity
- 87.87
JAT Capital Mgmt LP's disclosed holdings carry a Herfindahl concentration index of 0.149 — mathematically equivalent to about 7 equally-sized positions, well below its 16 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 1.21), with a handful of outsized bets alongside many smaller positions.
Recent activity leans toward initiating meaningfully larger new positions than it adds to existing ones (a 5.7 percentage-point tilt) — a pattern consistent with a more contrarian, new-idea-driven approach.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govNew buy WDC
Trim META
-97.7% -$12.4M
Trim AMZN
-97.4% -$9.7M
New buy ORCL
Sold out NVDA
Trim COHR
-86.8% -$7.0M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | WDC | Western Digital CORP | Stock-Tech | 28.97% | +28.97% | NEW | |
| 2 | ORCL | Oracle CORP | Stock-Tech | 15.94% | +15.94% | NEW | |
| 3 | MU | Micron Technology Inc | Stock-Tech | 11.17% | -7.90% | -86.31% | |
| 4 | HOOD | Robinhood Markets Inc - A | Stock-Financials | 10.87% | +10.87% | NEW | |
| 5 | AAOI | Applied Optoelectronics Inc | Stock-Tech | 8.28% | +6.85% | +164.63% | |
| 6 | IREN | IREN Limited | Stock-Other | 5.16% | +5.16% | NEW | |
| 7 | LITE | Lumentum Holdings Inc | Stock-Tech | 4.25% | +0.70% | -21.67% | |
| 8 | COHR | Coherent CORP | Stock-Tech | 4.16% | -11.03% | -86.79% | |
| 9 | STX | Seagate Technology Holdings plc | Stock-Tech | 2.83% | +2.83% | NEW | |
| 10 | MRVL | Marvell Technology Inc | Stock-Tech | 2.19% | +2.19% | NEW | |
| 11 | NOW | Servicenow Inc | Stock-Tech | 1.68% | +1.68% | NEW | |
| 12 | ✓ | Stock-Other | 1.62% | +1.62% | NEW | ||
| 13 | VST | Vistra CORP | Stock-Utilities | 0.84% | +0.84% | NEW | |
| 14 | VIXY | Proshares Vix Short-term Fut | ETF-Other | 0.82% | +0.82% | NEW | |
| 15 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 0.63% | -16.21% | -97.39% | |
| 16 | META | Meta Platforms Inc-class A | Stock-Comm Services | 0.60% | -20.72% | -97.71% |
Portfolio Performance
Performance for Q3 2026
-7.5%
Performance Last 4 Quarters
+41.1%
- Stdev
- +48%
- Beta
- +2.86
- Alpha
- -16%
- Max Drawdown
- -30.7%
- Annualized Perf
- +35.7%
- Batting Avg vs S&P
- +55.6%
- Sortino
- +1.8
- Stutzer
- +0.26
- Treynor
- +0.14
- Sterling
- +0.95
- Calmar
- +1.17
- Information Ratio
- +0.55
- Tracking Error
- +38.9%
- Stdev Down
- +22.9%
- Winning Months %
- +58.3%
- Losing Months %
- +41.7%
- Best 12 Months
- +151.1%
- Worst 12 Months
- -30.7%
- Efficiency Ratio
- +0.4
- Sharpe
- +0.86
- Stdev Sectors
- +33.3%
- Skewness
- +0.79
- Kurtosis
- +0.77
- Upside Potential
- +3.63
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 16 | $47.4M | 100 | ||
| 2026 Q1 | 10 | $59.3M | 100 | ||
| 2025 Q4 | 16 | $92.9M | 100 | ||
| 2025 Q3 | 17 | $46.3M | 100 | ||
| 2025 Q2 | 14 | $30.6M | 0 | ||
| 2025 Q1 | 21 | $281.3M | 0 | ||
| 2024 Q4 | 39 | $632.0M | 0 | ||
| 2024 Q3 | 39 | $621.4M | 0 | ||
| 2024 Q2 | 47 | $775.7M | 0 | ||
| 2024 Q1 | 36 | $802.8M | 0 | ||
| 2023 Q4 | 31 | $529.6M | 0 | ||
| 2023 Q3 | 29 | $447.5M | 0 | ||
| 2023 Q2 | 36 | $433.1M | 0 | ||
| 2023 Q1 | 30 | $335.4M | 0 | ||
| 2022 Q4 | 23 | $277.6M | 0 | ||
| 2022 Q3 | 34 | $279.5M | 0 | ||
| 2022 Q2 | 33 | $351.6M | 0 | ||
| 2022 Q1 | 37 | $331.0M | 0 | ||
| 2021 Q4 | 31 | $335.8M | 0 |
Holding changes this quarter
JAT Capital Mgmt LP's most significant position changes for 2026-06-30: New buy: Western Digital CORP (WDC); Sold out: Nvidia CORP (NVDA); New buy: Oracle CORP (ORCL); New buy: Robinhood Markets Inc - A (HOOD); New buy: IREN Limited (IREN).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | WDC | Western Digital CORP | +29% | NEW | New buy |
| 2 | ORCL | Oracle CORP | +15.9% | NEW | New buy |
| 3 | HOOD | Robinhood Markets Inc - A | +10.9% | NEW | New buy |
| 4 | AAOI | Applied Optoelectronics Inc | +6.9% | +164.63% | Add |
| 5 | IREN | IREN Limited | +5.2% | NEW | New buy |
| 6 | STX | Seagate Technology Holdings plc | +2.8% | NEW | New buy |
| 7 | MRVL | Marvell Technology Inc | +2.2% | NEW | New buy |
| 8 | NOW | Servicenow Inc | +1.7% | NEW | New buy |
| 9 | ✓ | +1.6% | NEW | New buy | |
| 10 | VST | Vistra CORP | +0.8% | NEW | New buy |
| 11 | VIXY | Proshares Vix Short-term Fut | +0.8% | NEW | New buy |
| 12 | LITE | Lumentum Holdings Inc | +0.7% | -21.67% | Trim |
| 13 | INTC | Intel CORP | -1.6% | EXIT | Sold out |
| 14 | CORZ | Core Scientific Inc | -1.7% | EXIT | Sold out |
| 15 | CEG | Constellation Energy | -3.5% | EXIT | Sold out |
| 16 | MU | Micron Technology Inc | -7.9% | -86.31% | Trim |
| 17 | COHR | Coherent CORP | -11% | -86.79% | Trim |
| 18 | NVDA | Nvidia CORP | -15.9% | EXIT | Sold out |
| 19 | AMZN | Amazon.com Inc | -16.2% | -97.39% | Trim |
| 20 | META | Meta Platforms Inc-class A | -20.7% | -97.71% | Trim |
Filing History
FAQ
What is JAT Capital Mgmt LP and what type of investor is it?
JAT Capital Mgmt LP is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $47.4M, spread across 16 disclosed positions.
What are JAT Capital Mgmt LP's largest equity positions?
Based on the latest 13F filing, JAT Capital Mgmt LP's top holdings by market value are:
1. Western Digital CORP (WDC) — $13.7M (29.0%)
2. Oracle CORP (ORCL) — $7.6M (15.9%)
3. Micron Technology Inc (MU) — $5.3M (11.2%)
4. Robinhood Markets Inc - A (HOOD) — $5.2M (10.9%)
5. Applied Optoelectronics Inc (AAOI) — $3.9M (8.3%)
What changes did JAT Capital Mgmt LP make in its most recent portfolio filing?
In the latest reported quarter, JAT Capital Mgmt LP made 20 notable position adjustments: 10 new positions were initiated, 1 existing holdings were added to, 5 positions were partially reduced, and 4 were completely exited. The largest of these moves: New buy: Western Digital CORP (WDC); Sold out: Nvidia CORP (NVDA); New buy: Oracle CORP (ORCL); New buy: Robinhood Markets Inc - A (HOOD); New buy: IREN Limited (IREN)
What sectors does JAT Capital Mgmt LP focus on?
JAT Capital Mgmt LP is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 86.0%
• Financials: 11.8%
• Utilities: 0.9%
• Consumer Discretionary: 0.7%
• Communication Services: 0.7%
Investment Profile
JAT Capital Mgmt LP returned an annualized 35.7% over the trailing 36 months — underperforming the S&P 500 by 16.0 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 2.86 (more volatile than the market) and a 56% quarterly batting average against the index.
Its portfolio is moderately concentrated and fast-trading, with 86.0% of the portfolio concentrated in Information Technology.
Its turnover score has risen from 0 to 100 over the past 4 quarters — a shift toward more active trading.
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