JANA Partners Management, LP
An institutional investment manager in NEW YORK, NY. Its Form 13F for the quarter ended Jun 30, 2026, filed Aug 14, 2026. SEC CIK 1998597.
- Reported value$1.90bn
- Positions10
Holdings: 10 positions
The filing on sec.govAs filed, largest first. Reported value is what the manager stated for each position at the quarter end, in US dollars; it is filing data, not a price. Weight is the position's share of the total reported value. Changes compare with the 13F for the quarter ended 2026-03-31.
| Issuer | Class | CUSIP | Reported value$m | Weight | Shares | Put or call | Change on the quarter before |
|---|---|---|---|---|---|---|---|
| Mercury Sys IncMRCY | COM | 589378108 | 484 | 25.5% | 3,958,849 | Reduced−148,575 | |
| Cooper Cos IncCOO | COM | 216648501 | 257 | 13.5% | 3,582,480 | Added+17,322 | |
| State STR SPDR S&P 500 ETF TSPY | TR UNIT | 78462F103 | 256 | 13.5% | 342,965 | Reduced−700 | |
| Lamb Weston Holdings IncLW | COM | 513272104 | 233 | 12.2% | 5,394,635 | Added+386,000 | |
| Fiserv IncFISV | COM | 337738108 | 180 | 9.4% | 3,662,080 | Reduced−773,525 | |
| Markel Group IncMKL | COM | 570535104 | 150 | 7.9% | 76,743 | Added+1,436 | |
| Alkami Technology IncALKT | COM | 01644J108 | 122 | 6.4% | 6,747,707 | Added+1,316,319 | |
| SIX Flags Entertainment CorpFUN | COM | 83001C108 | 87.7 | 4.6% | 4,116,099 | Unchanged | |
| Everpure IncP | CL A | 74624M102 | 77.9 | 4.1% | 989,196 | New+989,196 | |
| RAPID7 IncRPD | COM | 753422104 | 54.7 | 2.9% | 6,749,936 | Added+6,283 |
Sold out: 1 position
Held at the end of the quarter before and not reported this quarter.
| Issuer | Class | CUSIP | Reported value$ | Weight | Shares | Put or call | Change on the quarter before |
|---|---|---|---|---|---|---|---|
| Enhabit Inc | COM | 29332G102 | 0.0 | 0.0% | 0 | Sold out−2,090,412 |
Source: SEC EDGAR, Form 13F-HR, accession 0000902664-26-003486 (on sec.gov). Last ingested by Listed: Oct 22, 2026, 05:26 ET. Listed shows no prices and gives no investment advice.