JANA Partners Management, LP 13F holdings, Q3 2025
Holdings as of September 30, 2025 · filings on SEC EDGAR · latest filing →
JANA Partners Management, LP disclosed 12 US equity positions worth $2.1bn in its Q3 2025 13F filing. The largest position was MRCY at 22.3% of the reported book, followed by LW and MKL. Against the Q2 2025 filing, it opened 3 new positions, added to 2 and reduced 5 among the top 12 holdings.
What did JANA Partners Management, LP own in Q3 2025? Top 12 positions
| # | Stock | Sector | Weight | Value | Shares | Δ shares | vs Q2 2025 |
|---|---|---|---|---|---|---|---|
| 1 | MRCY MERCURY SYS INC | Industrials | 22.3% | $461.3m | 5,959,481 | -12% | reduced |
| 2 | LW LAMB WESTON HLDGS INC | Consumer Defensive | 14.1% | $290.9m | 5,008,635 | -31% | reduced |
| 3 | MKL MARKEL GROUP INC | Financial Services | 13.6% | $281.8m | 147,411 | -3% | reduced |
| 4 | SPY SPDR S&P 500 ETF TR | 12.5% | $257.6m | 386,637 | -25% | reduced | |
| 5 | COO COOPER COS INC | Healthcare | 8.1% | $166.9m | 2,434,607 | – | new |
| 6 | TRMB TRIMBLE INC | Technology | 7.4% | $153.6m | 1,881,399 | -48% | reduced |
| 7 | RPD RAPID7 INC | Technology | 5.9% | $121.9m | 6,502,108 | 13% | added |
| 8 | THS TREEHOUSE FOODS INC | 5.7% | $117.6m | 5,821,337 | 0% | held | |
| 9 | FUN SIX FLAGS ENTERTAINMENT CORP | 4.5% | $92.0m | 4,049,940 | – | new | |
| 10 | FRPT FRESHPET INC | Consumer Defensive | 2.8% | $57.8m | 1,048,136 | 4% | added |
| 11 | ALKT ALKAMI TECHNOLOGY INC | Technology | 2.3% | $47.0m | 1,892,413 | – | new |
| 12 | ENHABIT INC | 0.8% | $17.1m | 2,137,145 | 0% | held |
Weights are shares of the reported long US equity book (options excluded). Values are as filed, normalised to whole dollars. Share changes compare against the immediately preceding filing only.