JANA Partners Management, LP
Institutional investor · Portfolio as of Q2 2026
Top Holdings10 positions
 Mercury Systems Inc | 4M | $484.3M | 25.5% | $35.18 | +137.17% | 12 qtrssince 2023-Q3 | Decreased 0 |
 The Cooper Companies, Inc. | 3.6M | $256.9M | 13.5% | $72.67 | -14.42% | 4 qtrssince 2025-Q3 | Increased 63 |
 STATE STR SPDR S&P 500 ETF T | 342,965 | $256.1M | 13.5% | $478.57 | +56.70% | 12 qtrssince 2023-Q3 | Decreased 0 |
 Lamb Weston Holdings, Inc. | 5.4M | $232.9M | 12.2% | $59.49 | -7.16% | 8 qtrssince 2024-Q3 | Increased 67 |
 Fiserv, Inc. | 3.7M | $179.6M | 9.4% | $61.56 | -0.09% | 3 qtrssince 2025-Q4 | Decreased 0 |
 Markel Group Inc. | 76,743 | $149.9M | 7.9% | $1,772.94 | +10.67% | 7 qtrssince 2024-Q4 | Increased 63 |
 Alkami Technology, Inc. | 6.7M | $122.3M | 6.4% | $22.01 | -36.67% | 4 qtrssince 2025-Q3 | Increased 74 |
 Six Flags Entertainment Corporation | 4.1M | $87.7M | 4.6% | $22.60 | -50.49% | 4 qtrssince 2025-Q3 | Unchanged 0 |
 EVERPURE INC | 989,196 | $77.9M | 4.1% | $59.04 | +86.48% | 2 qtrssince 2026-Q1 | Decreased 0 |
 Rapid7, Inc. | 6.7M | $54.7M | 2.9% | $33.05 | -56.43% | 9 qtrssince 2024-Q2 | Increased 53 |
| Quarter | Reported value in US dollars | Reported value change |
|---|---|---|
| 2025-Q1 | $1,936,600,795 | -4.74654143975% |
| 2025-Q2 | $1,991,086,576 | 2.81347509206% |
| 2025-Q3 | $2,065,490,788 | 3.73686472988% |
| 2025-Q4 | $1,921,781,130 | -6.95765184889% |
| 2026-Q1 | $1,667,513,916 | -13.230810212% |
| 2026-Q2 | $1,902,301,416 | 14.0800923907% |
JANA Partners Management, LP manages $1.9B across 10 positions as of Q2 2026. Top holdings: MRCY (25.5%), COO (13.5%), SPY (13.5%). Fund DNA: High Conviction Activist. HoldingsIntel Score: 3.5/5.0.
Reported listing changes in EHAB; increased 5, led by ALKT (+1.3M shares); trimmed 4, led by FISV (−773,525 shares). Top move: ALKT (INCREASED, conviction 74). Portfolio: $1.9B across 10 positions.
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Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.
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Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer
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