Institutional Fund
Jana Partners Management, LP
New York, NYCIK 19985975 filings on record
Portfolio Value
$1.61B
Q1 2026
Holdings
10
Reported positions
New Buys
0
Opened this quarter
QoQ Change
-16.4%
from $1.92B
Portfolio Value Trend
Reported 13F value by quarter
Portfolio value trend — upgrade to see history
UpgradeTop Allocations
Largest positions by weight
- Mercury Sys Inc18.6%
- Cooper Cos Inc15.9%
- Fiserv Inc15.4%
- Spdr S&P 500 ETF Tr13.9%
- Lamb Weston Hldgs Inc13.2%
- Markel Group Inc9.0%
- Other14.0%
Portfolio Holdings
10 positions · Q1 2026
| # | Security | Shares | Value | % Port. | Δ Shares | Activity |
|---|---|---|---|---|---|---|
| 1 | Mercury Sys Inc | 4.11M | $299.47M | 18.6% | −852.1K | Reduced |
| 2 | Cooper Cos Inc | 3.57M | $254.91M | 15.9% | +45.5K | Added |
| 3 | Fiserv Inc | 4.44M | $247.51M | 15.4% | +2.19M | Added |
| 4 | Spdr S&P 500 ETF Tr | 343.7K | $223.50M | 13.9% | −47.7K | Reduced |
| 5 | Lamb Weston Hldgs Inc | 5.01M | $211.66M | 13.2% | 0 | Held |
| 6 | Markel Group Inc | 75.3K | $144.14M | 9.0% | −5.9K | Reduced |
| 7 | Alkami Technology Inc | 5.43M | $85.11M | 5.3% | +536.7K | Added |
| 8 | Six Flags Entertainment Corp | 4.12M | $73.06M | 4.5% | 0 | Held |
| 9 | Rapid7 Inc | 6.74M | $37.16M | 2.3% | 0 | Held |
| 10 | Enhabit Inc | 2.09M | $29.45M | 1.8% | 0 | Held |