Jana Partners Management, LP 13F holdings, Q1 2026
Holdings as of March 31, 2026 · filings on SEC EDGAR · latest filing →
Jana Partners Management, LP disclosed 11 US equity positions worth $1.7bn in its Q1 2026 13F filing. The largest position was MRCY at 18.0% of the reported book, followed by COO and FISV.
What did Jana Partners Management, LP own in Q1 2026? Top 11 positions
| # | Stock | Sector | Weight | Value | Shares | Δ shares | vs prior |
|---|---|---|---|---|---|---|---|
| 1 | MRCY MERCURY SYS INC | Industrials | 18.0% | $299.5m | 4,107,424 | – | |
| 2 | COO COOPER COS INC | Healthcare | 15.3% | $254.9m | 3,565,158 | – | |
| 3 | FISV FISERV INC | 14.8% | $247.5m | 4,435,605 | – | ||
| 4 | SPY STATE STR SPDR S&P 500 ETF T | 13.4% | $223.5m | 343,665 | – | ||
| 5 | LW LAMB WESTON HLDGS INC | Consumer Defensive | 12.7% | $211.7m | 5,008,635 | – | |
| 6 | MKL MARKEL GROUP INC | Financial Services | 8.6% | $144.1m | 75,307 | – | |
| 7 | ALKT ALKAMI TECHNOLOGY INC | Technology | 5.1% | $85.1m | 5,431,388 | – | |
| 8 | FUN SIX FLAGS ENTERTAINMENT CORP | Consumer Cyclical | 4.4% | $73.1m | 4,116,099 | – | |
| 9 | P EVERPURE INC | Technology | 3.7% | $61.5m | 1,042,296 | – | |
| 10 | RPD RAPID7 INC | Technology | 2.2% | $37.2m | 6,743,653 | – | |
| 11 | ENHABIT INC | 1.8% | $29.5m | 2,090,412 | – |
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.