BR
Barry Rosenstein
JANA Partners
- Portfolio value
- $1,902,301,416
- Stocks
- 10
- Period
- Q2 2026
- Filed
- 14 Aug 2026
Activist value with ESG and operational improvement focus.
✦
Cut Fiserv Inc 17.4% and added 24% to Alkami Technology Inc. Unknown is still the biggest weight in the book at 41.8%. The top five names are 74% of it.
Sector exposure
Unknown
41.8%
Technology
20.0%
Healthcare
13.5%
Consumer Defensive
12.2%
Financial Services
7.9%
Consumer Cyclical
4.6%
Concentration
25.5%Largest, MRCY
74%Top 5
100%Top 10
7Positions over 5%
0Under 1%, 0% of the book
Portfolio return
Time-weighted · held at window start
By position
By sector
| Stock | % Portfolio | Recent Activity | Shares | Reported Price | Value | |
|---|---|---|---|---|---|---|
| MRCY — Mercury Systems Inc | 25.46% | Reduce 3.62% | 3,958,849 | $122.33 | $484,285,998 | ↗ ◎ |
| COO — Cooper Cos Inc/the | 13.51% | Add 0.49% | 3,582,480 | $71.71 | $256,899,641 | ↗ ◎ |
| SPY — Ss Spdr S&p 500 Etf Trust-Us | 13.46% | Reduce 0.20% | 342,965 | $746.77 | $256,115,973 | ↗ ◎ |
| LW — Lamb Weston Holdings Inc | 12.24% | Add 7.71% | 5,394,635 | $43.18 | $232,940,339 | ↗ ◎ |
| FISV — Fiserv Inc | 9.44% | Reduce 17.44% | 3,662,080 | $49.05 | $179,625,024 | ↗ ◎ |
| MKL — Markel Group Inc | 7.88% | Add 1.91% | 76,743 | $1953.01 | $149,879,846 | ↗ ◎ |
| ALKT — Alkami Technology Inc | 6.43% | Add 24.24% | 6,747,707 | $18.12 | $122,268,451 | ↗ ◎ |
| FUN — Six Flags Entertainment Corp | 4.61% | 4,116,099 | $21.30 | $87,672,909 | ↗ ◎ | |
| P — Everpure Inc-A | 4.10% | Reduce 5.09% | 989,196 | $78.79 | $77,938,753 | ↗ ◎ |
| RPD — Rapid7 Inc | 2.87% | Add 0.09% | 6,749,936 | $8.10 | $54,674,482 | ↗ ◎ |