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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
TMHCTAYLOR MORRISON HOME CORP4.85%727,492$52,190,277727,492New$71.7413F
EAELECTRONIC ARTS INC4.82%252,932$51,861,1773,0441.22%$205.0413F
GTLSCHART INDS INC4.62%237,599$49,643,93647,66025.09%$208.9413F
PENPENUMBRA INC4.42%150,456$47,506,48330,36125.28%$315.7513F
WBDWARNER BROS DISCOVERY INC4.32%1,740,468$46,400,878123,4487.63%$26.6613F
JHGJANUS HENDERSON GROUP PLC4.31%890,916$46,327,632-31,361-3.4%$5213F
NSCNORFOLK SOUTHN CORP4.28%146,283$46,019,16812,2329.12%$314.5913F
TXNMTXNM ENERGY INC3.9%737,734$41,888,53762,8679.32%$56.7813F
WBDWARNER BROS DISCOVERY INC (Put)3.78%1,525,200$40,661,832475,70045.33%$26.6613F
CZRCAESARS ENTERTAINMENT INC NE3.69%1,313,074$39,628,5731,283,5744351.1%$30.1813F
SPYSTATE STR SPDR S&P 500 ETF T (Call)3.13%45,000$33,604,65045,000New$746.7713F
WBSWEBSTER FINL CORP3.11%437,210$33,411,58921,3875.14%$76.4213F
NSANATIONAL STORAGE AFFILIATES3.01%728,454$32,394,350152,23026.42%$44.4713F
SLABSILICON LABORATORIES INC3.01%148,138$32,377,04189,721153.59%$218.5613F
RAMPLIVERAMP HLDGS INC2.82%805,327$30,312,508805,327New$37.6413F
CPRXCATALYST PHARMACEUTICALS INC2.73%933,819$29,349,931933,819New$31.4313F
DDOMINION ENERGY INC2.42%381,231$26,034,265381,231New$68.2913F
ACAARCOSA INC2.35%173,589$25,220,746173,589New$145.2913F
TECHBIO-TECHNE CORP2.21%335,727$23,719,113335,727New$70.6513F
WSRWHITESTONE REIT2.17%1,227,709$23,277,3631,227,709New$18.9613F
ROKUROKU INC2.12%164,890$22,777,905164,890New$138.1413F
BLDTOPBUILD COR2.03%51,251$21,840,92651,251New$426.1613F
DBRGDIGITALBRIDGE GROUP INC2.02%1,376,380$21,719,27677,3295.95%$15.7813F
AVNSAVANOS MED INC1.85%799,002$19,879,170799,002New$24.8813F
SILASILA REALTY TRUST INC1.76%623,872$18,940,753623,872New$30.3613F
OGNORGANON & CO1.73%1,374,899$18,616,1331,374,899New$13.5413F
STELSTELLAR BANCORP INC1.4%383,227$15,068,486-48,004-11.13%$39.3213F
OGNORGANON & CO (Put)1.23%974,200$13,190,668974,200New$13.5413F
NUVLNUVALENT INC1.19%103,979$12,841,407103,979New$123.513F
APGEAPOGEE THERAPEUTICS INC1.17%94,900$12,596,07794,900New$132.7313F
SPYSTATE STR SPDR S&P 500 ETF T (Put)1.04%15,000$11,201,55015,000New$746.7713F
NUVLNUVALENT INC (Call)0.96%84,000$10,374,00084,000New$123.513F
NUVLNUVALENT INC (Put)0.96%84,000$10,374,00084,000New$123.513F
XOMAXOMA ROYALTY CORPORATION0.96%242,000$10,285,000242,000New$42.513F
TXNMTXNM ENERGY INC (PRN)0.73%6,000,000$7,845,792No Change$1.3113F
RPDRAPID7 INC (PRN)0.73%8,501,530$7,831,1563,000,00054.53%$0.9213F
KVUEKENVUE INC0.71%402,042$7,683,023-298,558-42.61%$19.1113F
BSYBENTLEY SYS INC (PRN)0.45%5,000,000$4,803,323No Change$0.9613F
VRNSVARONIS SYS INC (PRN)0.45%5,000,000$4,852,0832,000,00066.67%$0.9713F
ETSYETSY INC (PRN)0.44%5,000,000$4,734,4335,000,000New$0.9513F
RAMPLIVERAMP HLDGS INC (Put)0.41%117,100$4,407,644117,100New$37.6413F
GOOGMALPHABET INC0.4%85,000$4,325,65085,000New$50.8913F
RDFNREDFIN CORP (PRN)0.4%4,500,000$4,325,563No Change$0.9613F
SNAPSNAP INC (PRN)0.38%5,000,000$4,071,5975,000,000New$0.8113F
QXOQXO INC (Call)0.32%200,000$3,456,000200,000New$17.2813F
AXTAAXALTA COATING SYS LTD0.31%97,500$3,336,450-109,402-52.88%$34.2213F
AESAES CORP0.23%167,570$2,456,576-18,263-9.83%$14.6613F
GSATGLOBALSTAR INC0.23%30,668$2,493,00230,668New$81.2913F
APGEAPOGEE THERAPEUTICS INC (Put)0.22%17,500$2,322,77517,500New$132.7313F
UNFUNIFIRST CORP MASS0.22%9,045$2,392,041-16,698-64.86%$264.4613F
ESPRESPERION THERAPEUTICS INC NE0.18%612,774$1,936,366612,774New$3.1613F
BHFBRIGHTHOUSE FINL INC0.17%28,329$1,793,226-5,161-15.41%$63.313F
NATLNCR ATLEOS CORPORATION0.17%41,860$1,817,1432,9217.5%$43.4113F
PAYOPAYONEER GLOBAL INC0.17%258,216$1,838,498258,216New$7.1213F
QRVOQORVO INC0.17%19,052$1,776,98019,052New$93.2713F
AAUCALLIED GOLD CORP0.16%73,016$1,733,3332310.32%$23.7413F
SEMSELECT MED HLDGS CORP0.13%82,492$1,361,943-20,975-20.27%$16.5113F
EQTEQT CORP0.12%25,000$1,329,25025,000New$53.1713F
GBTGGLOBAL BUSINESS TRAVEL GROUP0.12%133,456$1,253,152133,456New$9.3913F
TALKTALKSPACE INC0.12%242,655$1,261,80626,49712.26%$5.213F
IHSIHS HOLDING LIMITED0.12%150,235$1,237,93612,6209.17%$8.2413F
CCOCLEAR CHANNEL OUTDOOR HLDGS0.11%507,856$1,229,01229,3396.13%$2.4213F
HONAHONEYWELL AEROSPACE INC0.1%5,000$1,105,4005,000New$221.0813F
NWENORTHWESTERN ENERGY GROUP IN0.09%13,633$976,395-205-1.48%$71.6213F
ECHOECHOSTAR CORP0.08%8,500$862,7504,500112.5%$101.513F
EQHEQUITABLE HLDGS INC0.08%20,701$908,36020,701New$43.8813F
BABOEING CO0.07%3,500$757,645-3,734-51.62%$216.4713F
PVHPVH CORPORATION0.07%10,000$742,60010,000New$74.2613F
TBRGTRUBRIDGE INC0.06%23,251$609,40923,251New$26.2113F
CCRNCROSS CTRY HEALTHCARE INC0.06%49,612$655,37549,612New$13.2113F
IMXIINTERNATIONAL MONEY EXPRESS0.06%42,140$608,9239,01827.23%$14.4513F
NATHNATHANS FAMOUS INC0.06%5,871$596,49487717.56%$101.613F
SLPSIMULATIONS PLUS INC0.06%33,238$608,58833,238New$18.3113F
SKYWSKYWEST INC0.06%7,000$695,3107,000New$99.3313F
VRNSVARONIS SYS INC (Put)0.06%15,000$629,40015,000New$41.9613F
ALKALASKA AIR GROUP INC0.05%11,000$574,2007357.16%$52.213F
HONHONEYWELL INTL INC0.05%2,500$559,7502,500New$223.913F
VKTXVIKING THERAPEUTICS INC0.05%15,000$585,1504,72045.91%$39.0113F
AURAAURA BIOSCIENCES INC0.04%60,000$426,00060,000New$7.113F
PACBPACIFIC BIOSCIENCES CALIF IN0.04%273,666$459,7591,6260.6%$1.6813F
ALOTASTRONOVA INC0.03%11,972$340,84311,972New$28.4713F
UALUNITED AIRLS HLDGS INC0.03%2,500$339,975-2,500-50%$135.9913F
PENNPENN ENTERTAINMENT INC0.02%10,000$213,600-25,000-71.43%$21.3613F
VFCV F CORP0.02%15,000$250,20015,000New$16.6813F
DKSDICKS SPORTING GOODS INC0.01%600$136,086-4,748-88.78%$226.8113F
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