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  • Gurus
  • Event Driven
  • WATER ISLAND CAPITAL LLC (Data extracted from 13F, 13D, 13G and Form 4)

WATER ISLAND CAPITAL LLC

AUM: $1.59 B
13-F Portfolio Value: $1.08 B
Last 13-F Filed: Q2 2026
Concentration in top 10: 42.99%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
ALAIR LEASE CORP-73,131Exited13F
FOLDAMICUS THERAPEUTIC-104,066Exited13F
AMRXAMNEAL PHARMACEUTICALS INC-68,400Exited13F
APLSAPELLIS PHARMACEUTICALS INC-120,500Exited13F
APLSAPELLIS PHARMACEUTICALS INC (Put)-120,500Exited13F
ACLXARCELLX INC-183,409Exited13F
SANBANCO SANTANDER SA (Call)-681,700Exited13F
BLFYBLUE FOUNDRY BANCORP-35,658Exited13F
CSGSCSG SYS INTL INC-20,223Exited13F
CSGSCSG SYS INTL INC (PRN)-5,000,000Exited13F
CTRACOTERRA ENERGY INC-27,292Exited13F
CVGWCALAVO GROWERS INC-20,321Exited13F
CTLPCANTALOUPE INC-107,867Exited13F
CNTACENTESSA PHARMACEUTICALS PLC-41,000Exited13F
CNTACENTESSA PHARMACEUTICALS PLC (Put)-41,000Exited13F
CWANCLEARWATER ANALYTICS HLDGS I-109,589Exited13F
DAWNDAY ONE BIOPHARMACEUTICALS I-944,247Exited13F
DAWNDAY ONE BIOPHARMACEUTICALS I (Put)-839,700Exited13F
DHILDIAMOND HILL INVT GROUP INC-2,522Exited13F
EAELECTRONIC ARTS INC (Put)-149,800Exited13F
EHABENHABIT INC-984,611Exited13F
FFWMFIRST FNDTN INC-67,573Exited13F
FFICFLUSHING FINL CORP-30,161Exited13F
GLADGLADSTONE CAP CORP (PRN)-1,000,000Exited13F
GLDDGREAT LAKES DREDGE & DOCK CO-1,263,580Exited13F
PKSTPEAKSTONE REALTY TRUST-503,583Exited13F
HALOHALOZYME THERAPEUTICS INC (PRN)-3,000,000Exited13F
HTBKHERITAGE COMM CORP-37,992Exited13F
HOLXHOLOGIC INC-560,045Exited13F
KWKENNEDY-WILSON HOLDINGS INC-825,652Exited13F
KVUEKENVUE INC (Put)-700,600Exited13F
ELLAUDER ESTEE COS INC-7,500Exited13F
VREVERIS RESIDENTIAL INC-597,390Exited13F
MASIMASIMO CORP-194,197Exited13F
MCWMISTER CAR WASH INC-156,502Exited13F
NTNXNUTANIX INC (PRN)-5,000,000Exited13F
OSONESTREAM INC-91,120Exited13F
ONTFON24 INC-60,364Exited13F
PYPLPAYPAL HLDGS INC-5,124Exited13F
PRAPROASSURANCE CORP-51,103Exited13F
SEESEALED AIR CORP NEW-56,071Exited13F
SEMRSEMRUSH HLDGS INC-133,872Exited13F
SLABSILICON LABORATORIES INC (Put)-47,600Exited13F
SKYTSKYWATER TECHNOLOGY INC-34,536Exited13F
SNCYSUN CTRY AIRLS HLDGS INC-98,859Exited13F
STKLSUNOPTA INC-196,514Exited13F
TPHTRI POINTE HOMES INC-536,367Exited13F
TERNTERNS PHARMACEUTICALS INC-188,500Exited13F
TERNTERNS PHARMACEUTICALS INC (Put)-188,500Exited13F
THRTHERMON GROUP HLDGS INC-32,987Exited13F
UDMYUDEMY INC-139,335Exited13F
UPSUNITED PARCEL SVCS INC-2,520Exited13F
VCTRVICTORY CAP HLDGS INC DEL-5,120Exited13F
AXTAAXALTA COATING SYS LTD (Put)-195,000Exited13F
JHGJANUS HENDERSON GROUP PLC (Put)-154,300Exited13F
ZIMZIM INTEGRATED SHIPPING SERV-331,800Exited13F
ZIMZIM INTEGRATED SHIPPING SERV (Put)-331,800Exited13F