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JANA Partners Management, LP
Period ended Jun 30, 2026 · Latest filing Aug 14, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Jun 30, 2026: $1,902,301,416
More quarters will appear as history becomes available.
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- MERCURY SYS INC · COM · 589378108 · shares: $484,285,998
- COOPER COS INC · COM · 216648501 · shares: $256,899,641
- STATE STR SPDR S&P 500 ETF T · TR UNIT · 78462F103 · shares: $256,115,973
- LAMB WESTON HLDGS INC · COM · 513272104 · shares: $232,940,339
- FISERV INC · COM · 337738108 · shares: $179,625,024
- MARKEL GROUP INC · COM · 570535104 · shares: $149,879,846
- ALKAMI TECHNOLOGY INC · COM · 01644J108 · shares: $122,268,451
- SIX FLAGS ENTERTAINMENT CORP · COM · 83001C108 · shares: $87,672,909
- EVERPURE INC · CL A · 74624M102 · shares: $77,938,753
- RAPID7 INC · COM · 753422104 · shares: $54,674,482
Reported holdings
10 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| MERCURY SYS INC | COM | 589378108 | — | 3,958,849 shares | $484,285,998 |
| COOPER COS INC | COM | 216648501 | — | 3,582,480 shares | $256,899,641 |
| STATE STR SPDR S&P 500 ETF T | TR UNIT | 78462F103 | — | 342,965 shares | $256,115,973 |
| LAMB WESTON HLDGS INC | COM | 513272104 | — | 5,394,635 shares | $232,940,339 |
| FISERV INC | COM | 337738108 | — | 3,662,080 shares | $179,625,024 |
| MARKEL GROUP INC | COM | 570535104 | — | 76,743 shares | $149,879,846 |
| ALKAMI TECHNOLOGY INC | COM | 01644J108 | — | 6,747,707 shares | $122,268,451 |
| SIX FLAGS ENTERTAINMENT CORP | COM | 83001C108 | — | 4,116,099 shares | $87,672,909 |
| EVERPURE INC | CL A | 74624M102 | — | 989,196 shares | $77,938,753 |
| RAPID7 INC | COM | 753422104 | — | 6,749,936 shares | $54,674,482 |