JANA PARTNERS JUST DOUBLED THEIR FISERV POSITION AND FULLY EXITED TREEHOUSE FOODS Here are their updated largest holdings and every move they made in Q1 2026, as per @ralliesai Top 10 holdings: 🥇 Mercury Systems $MRCY: $299M 🥈 The Cooper Companies $COO: $255M 🥉 Fiserv $FISV: $247M (+98% shares) 4. SPDR S&P 500 ETF $SPY: $223M 5. Lamb Weston $LW: $212M 6. Markel Group $MKL: $144M 7. Alkami Technology $ALKT: $85M 8. Six Flags Entertainment $FUN: $73M 9. Rapid7 $RPD: $37M 10. Enhabit $EHAB: $29M Biggest adds: - Fiserv $FISV: +98% shares - Alkami Technology $ALKT: +11% Biggest trims: - Mercury Systems $MRCY: -17% - SPDR S&P 500 ETF $SPY: -12% - Markel Group $MKL: -7% Full exits: - TreeHouse Foods $THS: $137M - Freshpet $FRPT: $34M The story: JANA nearly doubled Fiserv and closed out their long-running TreeHouse Foods position.