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JANA Partners Management, LP
hedge fundUpdated 27 days agoManaged by Jana Partners Management, Lp • Latest filing Q2 2026
Formerly filed as JANA PARTNERS LLC (prior SEC CIK, where earlier filing history lives).
Portfolio value
$1.9B
Q2 2026
Filings
12
Quarterly 13F history
Top-10 concentration
100.0%
Weight of largest holdings
Annualized return
-24.9%
Implied from 13F holdings
Portfolio value history
13F-disclosed portfolio value over 12 quarters
Show data table
| Period | Portfolio value |
|---|---|
| Q3 2023 | $1.4B |
| Q4 2023 | $1.5B |
| Q1 2024 | $1.8B |
| Q2 2024 | $1.7B |
| Q3 2024 | $1.9B |
| Q4 2024 | $2B |
| Q1 2025 | $1.9B |
| Q2 2025 | $2B |
| Q3 2025 | $2.1B |
| Q4 2025 | $1.9B |
| Q1 2026 | $1.6B |
| Q2 2026 | $1.9B |
Top holdings
10 positions as of Q2 2026
| # | Stock | Value | Shares | % Portfolio | Change |
|---|---|---|---|---|---|
| 1 | M MRCY MERCURY SYS INC | $484.3M | 3.96M | 25.46% | — |
| 2 | C COO COOPER COS INC | $256.9M | 3.58M | 13.50% | — |
| 3 | S SPY STATE STR SPDR S&P 500 ETF T | $256.1M | 343.0K | 13.46% | — |
| 4 | L LW LAMB WESTON HLDGS INC | $232.9M | 5.39M | 12.25% | — |
| 5 | F FISV FISERV INC | $179.6M | 3.66M | 9.44% | — |
| 6 | M MKL MARKEL GROUP INC | $149.9M | 76.7K | 7.88% | — |
| 7 | A ALKT ALKAMI TECHNOLOGY INC | $122.3M | 6.75M | 6.43% | — |
| 8 | F FUN SIX FLAGS ENTERTAINMENT CORP | $87.7M | 4.12M | 4.61% | — |
| 9 | E ET-PI EVERPURE INC | $77.9M | 989.2K | 4.10% | — |
| 10 | P PACK RAPID7 INC | $54.7M | 6.75M | 2.87% | — |