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Water Island Capital LLC

Q1 2026 Holdings

Filed 2026-05-15 | 98 holdings | $895.6M | 13F-HR | View on SEC ↗ · Holdings Table ↗

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IssuerClassCUSIPValue ↓Shares% Portfolio
Electronic Arts Inc(EA)Equity285512109$50.9M249,8885.7%
Janus Henderson Group PLCEquityG4474Y214$47.4M922,2775.3%
Warner Bros Discovery Inc(WBD)Equity934423104$44.4M1,617,0205.0%
Hologic Inc(HOLX)Equity436440101$42.3M560,0454.7%
Txnm Energy Inc(TXNM)Equity69349H107$39.5M674,8674.4%
Penumbra Inc(PEN)Equity70975L107$39.4M120,0954.4%
Chart Inds Inc(GTLS)Equity16115Q308$39.3M189,9394.4%
Norfolk Southn Corp(NSC)Equity655844108$38.5M134,0514.3%
Masimo Corp(MASI)Equity574795100$34.5M194,1973.9%
Electronic Arts IncPutEquity Put285512959$30.5M149,8003.4%
Webster Finl Corp(WBS)Equity947890109$28.9M415,8233.2%
Warner Bros Discovery IncPutEquity Put934423954$28.8M1,049,5003.2%
TRI Pointe Homes Inc(TPH)Equity87265H109$25.1M536,3672.8%
National Storage Affiliates(NSA)Equity637870106$21.7M576,2242.4%
Great Lakes Dredge & Dock Co(GLDD)Equity390607109$21.5M1,263,5802.4%
Arcellx Inc(ACLX)Equity03940C100$21.1M183,4092.4%
DAY One Biopharmaceuticals I(DAWN)Equity23954D109$20.2M944,2472.3%
Digitalbridge Group Inc(DBRG)Equity25401T603$20.0M1,299,0512.2%
DAY One Biopharmaceuticals IPutEquity Put23954D959$18.0M839,7002.0%
Stellar Bancorp Inc(STEL)Equity858927106$15.8M431,2311.8%
Enhabit Inc(EHAB)Equity29332G102$13.9M984,6111.5%
Silicon Laboratories Inc(SLAB)Equity826919102$12.2M58,4171.4%
Kenvue Inc(KVUE)Equity49177J102$12.1M700,6001.3%
Kenvue IncPutEquity Put49177J952$12.1M700,6001.3%
Veris Residential Inc(VRE)Equity554489104$11.3M597,3901.3%
Peakstone Realty Trust(PKST)Equity39818P799$10.5M503,5831.2%
Terns Pharmaceuticals Inc(TERN)Equity880881107$9.9M188,5001.1%
Terns Pharmaceuticals IncPutEquity Put880881957$9.9M188,5001.1%
Silicon Laboratories IncPutEquity Put826919952$9.9M47,6001.1%
Kennedy-Wilson Holdings Inc(KW)Equity489398107$8.9M825,6521.0%
ZIM Integrated Shipping ServPutEquity PutM9T951959$8.7M331,8001.0%
ZIM Integrated Shipping Serv(ZIM)EquityM9T951109$8.7M331,8001.0%
Txnm Energy IncConvertible Bond69349HAF4$8.1M$6,000,0000.9%
Janus Henderson Group PLCPutEquity PutG4474Y954$7.9M154,3000.9%
Banco Santander SACallEquity Call05964H905$7.7M681,7000.9%
Unifirst Corp Mass(UNF)Equity904708104$6.5M25,7430.7%
CSG SYS Intl IncConvertible Bond126349AH2$6.1M$5,000,0000.7%
Axalta Coating SYS LTD(AXTA)EquityG0750C108$5.7M206,9020.6%
Axalta Coating SYS LTD(AXTA)PutEquity PutG0750C958$5.4M195,0000.6%
Rapid7 IncConvertible Bond753422AF1$4.9M$5,501,5300.5%
Apellis Pharmaceuticals Inc(APLS)Equity03753U106$4.8M120,5000.5%
Apellis Pharmaceuticals IncPutEquity Put03753U956$4.8M120,5000.5%
AIR Lease Corp(AL)Equity00912X302$4.7M73,1310.5%
Bentley SYS IncConvertible Bond08265TAD1$4.7M$5,000,0000.5%
Nutanix IncConvertible Bond67059NAK4$4.5M$5,000,0000.5%
Redfin CorpConvertible Bond75737FAE8$4.3M$4,500,0000.5%
Halozyme Therapeutics IncConvertible Bond40637HAD1$3.1M$3,000,0000.3%
AES Corp(AES)Equity00130H105$2.6M185,8330.3%
Varonis SYS IncConvertible Bond922280AD4$2.6M$3,000,0000.3%
Clearwater Analytics Hldgs I(CWAN)Equity185123106$2.6M109,5890.3%
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