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JANA Partners Management, LP

Q1 2026 · 13F-HR

JANA Partners Management, LPholdings as filed

Filed 2026-05-15 · accession 0000902664-26-002515

$1.61B
Reported value
10
Positions
2026-03-31
Period end
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The Brief · JANA Partners Management, LP · Q1 2026

AI · grounded in 13F

JANA Partners Management, LP exited its position in TreeHouse Foods Inc THS, reducing its holdings by $137.3M. The fund also closed its position in Freshpet Inc FRPT, resulting in a $33.9M decrease. Conversely, the fund increased its stake in Fiserv Inc FISV by 97.5%. Other activity included trimming positions in Mercury Sys Inc MRCY by 17.2% and State Str SPDR S&P 500 ETF T SPY by 12.2%.

Holdings as filed

CUSIPTickerIssuerValue% port.SharesClassVoting
589378108MRCYMERCURY SYS INC$299.5M18.6%4,107,424CommonSOLE
216648501COOCOOPER COS INC$254.9M15.9%3,565,158CommonSOLE
337738108FISVFISERV INC$247.5M15.4%4,435,605CommonSOLE
78462F103SPYSTATE STR SPDR S&P 500 ETF T$223.5M13.9%343,665CommonSOLE
513272104LWLAMB WESTON HLDGS INC$211.7M13.2%5,008,635CommonSOLE
570535104MKLMARKEL GROUP INC$144.1M8.98%75,307CommonSOLE
01644J108ALKTALKAMI TECHNOLOGY INC$85.1M5.30%5,431,388CommonSOLE
83001C108FUNSIX FLAGS ENTERTAINMENT CORP$73.1M4.55%4,116,099CommonSOLE
753422104RPDRAPID7 INC$37.2M2.31%6,743,653CommonSOLE
29332G102EHABUSDENHABIT INC$29.5M1.83%2,090,412CommonSOLE

Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.