JANA Partners Management, LP
CIK: 0001998597Latest portfolio: $1.9B · Q4 2025
Holdings
12
Total Value
$1.9B
New Positions
1
Closed Positions
1
Top Holdings
| # | Stock | Shares | Value | % Portfolio | Change | Type |
|---|---|---|---|---|---|---|
| 1 | MRCYMERCURY SYS INC | 4,959,481 | $362.1M | 18.84% | -1,000,000 | |
| 2 | COOCOOPER COS INC | 3,519,620 | $288.5M | 15.01% | +1.1M | |
| 3 | SPYSPDR S&P 500 ETF TR | 391,337 | $266.9M | 13.89% | +5K | |
| 4 | LWLAMB WESTON HLDGS INC | 5,008,635 | $209.8M | 10.92% | — | |
| 5 | MKLMARKEL GROUP INC | 81,219 | $174.6M | 9.08% | -66,192 | |
| 6 | FISVFISERV INC | 2,245,520 | $150.8M | 7.85% | NEW | |
| 7 | THSTREEHOUSE FOODS INC | 5,821,337 | $137.3M | 7.15% | — | |
| 8 | ALKTALKAMI TECHNOLOGY INC | 4,894,665 | $112.9M | 5.88% | +3.0M | |
| 9 | RPDRAPID7 INC | 6,743,653 | $102.5M | 5.33% | +242K | |
| 10 | FUNSIX FLAGS ENTERTAINMENT CORP | 4,116,099 | $63.1M | 3.29% | +66K | |
| 11 | FRPTFRESHPET INC | 557,390 | $34.0M | 1.77% | -490,746 | |
| 12 | EHABENHABIT INC | 2,090,412 | $19.3M | 1.00% | -46,733 |
Quarterly Changes
Sector Breakdown
Technology0.0% ($150831112.9T)
Consumer Defensive0.0% ($20981113.7T)
Financial Services0.0% ($266.9T)
Healthcare0.0% ($28.8T)
Industrials0.0% ($362.1M)
Consumer Cyclical0.0% ($63.1M)
Filing History
| Quarter | Filing Date | Portfolio Value | Holdings |
|---|---|---|---|
| Q4 2025 | Feb 17, 2026 | $1.9B | 12 |
| Q3 2025 | Nov 14, 2025 | $2.1T | 12 |
| Q2 2025 | Aug 14, 2025 | $2.0T | 10 |
| Q1 2025 | May 15, 2025 | $1.9T | 10 |
| Q4 2024 | Feb 14, 2025 | $2.0T | 11 |
| Q3 2024 | Nov 14, 2024 | $1926.4T | 12 |
| Q2 2024 | Aug 14, 2024 | $1709.7T | 12 |
| Q1 2024 | May 15, 2024 | $1829.6T | 10 |
| Q4 2023 | Feb 14, 2024 | $1549.1T | 8 |
| Q3 2023 | Nov 14, 2023 | $1366.0T | 8 |
Fund Information
JANA Partners Management, LP is an institutional investment manager that files 13F reports with the SEC. As of the Q4 2025 filing, the fund reported a portfolio valued at $1.9B across 12 holdings. The largest position is MERCURY SYS INC (MRCY), representing 18.8% of the portfolio. Compared to the previous quarter, the fund opened 1 new positions and closed 1 positions. 13F filings are required quarterly disclosures that provide transparency into the holdings of institutional investment managers with at least $100 million in qualifying assets.