13F-HR filed by JANA Partners Management, LP
JANA Partners Management, LP filed this 13F-HR for the quarter ended 2026-03-31, filed 2026-05-15, with 10 holding rows worth $1,605,976,760.
- Accession
- 0000902664-26-002515
- Filer
- CIK 1998597
- Filed
- 2026-05-15
- Accepted by EDGAR
- acceptance time not in the bulk data set
- Ingested
- Source
- SEC quarterly data set
13F report for Q1 2026
A holdings report, 10 entries on the cover page, a total value of $1,605,976,760 stated on the cover page (in dollars after the unit check, H1), rows summing to $1,605,976,760 with VALUE read as dollars as filed, 13F file number 028-23453. The quarter's positions are built on this report. The resolved quarter.
The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).
| Issuer as filed | CUSIP | Class | Amount | Value | Value read as | Type |
|---|---|---|---|---|---|---|
| MERCURY SYS INC COM | 589378108 | Stock | 4,107,424 | $299,472,284 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
| COOPER COS INC | 216648501 | COM | 3,565,158 | $254,908,797 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
| FISERV INC | 337738108 | COM | 4,435,605 | $247,506,759 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
| SPY | 78462F103 | SHS | 343,665 | $223,499,096 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
| LAMB WESTON HLDGS INC | 513272104 | COM | 5,008,635 | $211,664,915 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
| MARKELGROUPINC | 570535104 | STOK | 75,307 | $144,142,869 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
| ALKAMI TECHNOLOGY INC | 01644J108 | COM | 5,431,388 | $85,109,850 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
| SIX FLAGS ENTERTAINMENT CORP COM | 83001C108 | Stock | 4,116,099 | $73,060,757 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
| RAPID7 INC COM | 753422104 | Stock | 6,743,653 | $37,157,528 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
| ENHABIT INC | 29332G102 | COM | 2,090,412 | $29,453,905 | dollars as filed | The filing omitted confidential holdings, a later amendment may add them. |
Amendment chain
| Filing | Role | Filed | Accepted | Ingested |
|---|---|---|---|---|
| 13F-HR 0000902664-26-002515 | this filing | 2026-05-15 | acceptance time not in the bulk data set | |
| 13F-HR/A 0000902664-26-002957 | added | 2026-06-30 | acceptance time not in the bulk data set |