×

Subscribe Today

Get our free articles delivered directly to your email!

Continue reading

  • 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: $895.64 M
Last 13-F Filed: Q1 2026
Concentration in top 10: 45.42%
Filter by:
Quarter to View:
Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
EAELECTRONIC ARTS INC5.69%249,888$50,944,66769,05038.18%$203.8713F
JHGJANUS HENDERSON GROUP PLC5.29%922,277$47,377,369274,79242.44%$51.3713F
WBDWARNER BROS DISCOVERY INC4.96%1,617,020$44,403,369477,38641.89%$27.4613F
HOLXHOLOGIC INC4.73%560,045$42,333,80192,30319.73%$75.5913F
TXNMTXNM ENERGY INC4.4%674,867$39,452,72698,45617.08%$58.4613F
PENPENUMBRA INC4.4%120,095$39,435,596120,095New$328.3713F
GTLSCHART INDS INC4.38%189,939$39,269,8911,6140.86%$206.7513F
NSCNORFOLK SOUTHN CORP4.3%134,051$38,472,6375,0083.88%$28713F
MASIMASIMO CORP3.86%194,197$34,541,821194,197New$177.8713F
EAELECTRONIC ARTS INC (Put)3.41%149,800$30,539,726149,800New$203.8713F
WBDWARNER BROS DISCOVERY INC (Put)3.22%1,049,500$28,819,270954,6001005.9%$27.4613F
WBSWEBSTER FINL CORP3.22%415,823$28,866,433415,823New$69.4213F
TPHTRI POINTE HOMES INC2.8%536,367$25,064,430536,367New$46.7313F
NSANATIONAL STORAGE AFFILIATES2.43%576,224$21,746,694576,224New$37.7413F
GLDDGREAT LAKES DREDGE & DOCK CO2.4%1,263,580$21,480,8601,263,580New$1713F
ACLXARCELLX INC2.35%183,409$21,059,022183,409New$114.8213F
DAWNDAY ONE BIOPHARMACEUTICALS I2.26%944,247$20,244,656944,247New$21.4413F
DBRGDIGITALBRIDGE GROUP INC2.24%1,299,051$20,031,366370,05139.83%$15.4213F
DAWNDAY ONE BIOPHARMACEUTICALS I (Put)2.01%839,700$18,003,168839,700New$21.4413F
STELSTELLAR BANCORP INC1.76%431,231$15,787,367431,231New$36.6113F
EHABENHABIT INC1.55%984,611$13,873,170984,611New$14.0913F
SLABSILICON LABORATORIES INC1.36%58,417$12,159,49958,417New$208.1513F
KVUEKENVUE INC1.35%700,600$12,078,34510,4091.51%$17.2413F
KVUEKENVUE INC (Put)1.35%700,600$12,078,3445,6000.81%$17.2413F
VREVERIS RESIDENTIAL INC1.26%597,390$11,272,750597,390New$18.8713F
PKSTPEAKSTONE REALTY TRUST1.17%503,583$10,519,849503,583New$20.8913F
SLABSILICON LABORATORIES INC (Put)1.11%47,600$9,907,94047,600New$208.1513F
TERNTERNS PHARMACEUTICALS INC1.11%188,500$9,937,720188,500New$52.7213F
TERNTERNS PHARMACEUTICALS INC (Put)1.11%188,500$9,937,720188,500New$52.7213F
KWKENNEDY-WILSON HOLDINGS INC1%825,652$8,933,555825,652New$10.8213F
ZIMZIM INTEGRATED SHIPPING SERV0.98%331,800$8,742,930331,800New$26.3513F
ZIMZIM INTEGRATED SHIPPING SERV (Put)0.98%331,800$8,742,930331,800New$26.3513F
TXNMTXNM ENERGY INC (PRN)0.9%6,000,000$8,098,7503,000,000New$1.3513F
JHGJANUS HENDERSON GROUP PLC (Put)0.88%154,300$7,926,391142,3001185.83%$51.3713F
SANBANCO SANTANDER SA (Call)0.86%681,700$7,689,576681,700New$11.2813F
UNFUNIFIRST CORP MASS0.72%25,743$6,476,68125,743New$251.5913F
CSGSCSG SYS INTL INC (PRN)0.68%5,000,000$6,091,111No Change$1.2213F
AXTAAXALTA COATING SYS LTD0.64%206,902$5,731,1851,1800.57%$27.713F
AXTAAXALTA COATING SYS LTD (Put)0.6%195,000$5,401,500127,900190.61%$27.713F
APLSAPELLIS PHARMACEUTICALS INC0.54%120,500$4,847,715120,500New$40.2313F
APLSAPELLIS PHARMACEUTICALS INC (Put)0.54%120,500$4,847,715120,500New$40.2313F
RPDRAPID7 INC (PRN)0.54%5,501,530$4,863,227No Change$0.8813F
ALAIR LEASE CORP0.53%73,131$4,749,127-225,309-75.5%$64.9413F
BSYBENTLEY SYS INC (PRN)0.53%5,000,000$4,747,188No Change$0.9513F
NTNXNUTANIX INC (PRN)0.5%5,000,000$4,514,8861,500,00042.86%$0.913F
RDFNREDFIN CORP (PRN)0.48%4,500,000$4,304,250No Change$0.9613F
HALOHALOZYME THERAPEUTICS INC (PRN)0.35%3,000,000$3,111,250No Change$1.0413F
AESAES CORP0.29%185,833$2,618,387185,833New$14.0913F
CWANCLEARWATER ANALYTICS HLDGS I0.29%109,589$2,591,780-766,043-87.48%$23.6513F
VRNSVARONIS SYS INC (PRN)0.29%3,000,000$2,614,696No Change$0.8713F
SEESEALED AIR CORP NEW0.26%56,071$2,357,785-503,166-89.97%$42.0513F
AAUCALLIED GOLD CORP0.25%72,785$2,255,31072,785New$30.9913F
OSONESTREAM INC0.24%91,120$2,186,88091,120New$2413F
BHFBRIGHTHOUSE FINL INC0.22%33,490$2,005,3814,64916.12%$59.8813F
NATLNCR ATLEOS CORPORATION0.19%38,939$1,696,96238,939New$43.5813F
SEMSELECT MED HLDGS CORP0.19%103,467$1,685,477103,467New$16.2913F
THRTHERMON GROUP HLDGS INC0.19%32,987$1,662,54532,987New$50.413F
CSGSCSG SYS INTL INC0.18%20,223$1,616,627-130,497-86.58%$79.9413F
CNTACENTESSA PHARMACEUTICALS PLC0.18%41,000$1,628,52041,000New$39.7213F
CNTACENTESSA PHARMACEUTICALS PLC (Put)0.18%41,000$1,628,52041,000New$39.7213F
SEMRSEMRUSH HLDGS INC0.18%133,872$1,598,432-494,730-78.7%$11.9413F
SNCYSUN CTRY AIRLS HLDGS INC0.18%98,859$1,633,15198,859New$16.5213F
FOLDAMICUS THERAPEUTIC0.17%104,066$1,504,794-602,551-85.27%$14.4613F
BABOEING CO0.16%7,234$1,439,7837,234New$199.0313F
PRAPROASSURANCE CORP0.14%51,103$1,263,2664,1118.75%$24.7213F
STKLSUNOPTA INC0.14%196,514$1,273,411196,514New$6.4813F
CTLPCANTALOUPE INC0.13%107,867$1,166,042-23,927-18.15%$10.8113F
CCOCLEAR CHANNEL OUTDOOR HLDGS0.13%478,517$1,134,085478,517New$2.3713F
IHSIHS HOLDING LIMITED0.13%137,615$1,132,571137,615New$8.2313F
DKSDICKS SPORTING GOODS INC0.12%5,348$1,060,4554,248386.18%$198.2913F
MCWMISTER CAR WASH INC0.12%156,502$1,090,819156,502New$6.9713F
TALKTALKSPACE INC0.12%216,158$1,118,618216,158New$5.1813F
CTRACOTERRA ENERGY INC0.11%27,292$959,04127,292New$35.1413F
GLADGLADSTONE CAP CORP (PRN)0.11%1,000,000$967,746-1,000,000-50%$0.9713F
SKYTSKYWATER TECHNOLOGY INC0.11%34,536$946,63234,536New$27.4113F
NWENORTHWESTERN ENERGY GROUP IN0.1%13,838$912,478-469-3.28%$65.9413F
AMRXAMNEAL PHARMACEUTICALS INC0.09%68,400$850,21268,400New$12.4313F
CZRCAESARS ENTERTAINMENT INC NE0.09%29,500$779,68529,500New$26.4313F
UDMYUDEMY INC0.07%139,335$643,7283,4132.51%$4.6213F
CVGWCALAVO GROWERS INC0.06%20,321$524,07920,321New$25.7913F
IMXIINTERNATIONAL MONEY EXPRESS0.06%33,122$523,328-55,354-62.56%$15.813F
ELLAUDER ESTEE COS INC0.06%7,500$538,2757,500New$71.7713F
NATHNATHANS FAMOUS INC0.06%4,994$503,0464,994New$100.7313F
PENNPENN ENTERTAINMENT INC0.06%35,000$526,05035,000New$15.0313F
BLFYBLUE FOUNDRY BANCORP0.05%35,658$472,11235,658New$13.2413F
DHILDIAMOND HILL INVT GROUP INC0.05%2,522$434,036401.61%$172.113F
SATSECHOSTAR CORP0.05%4,000$468,2804,000New$117.0713F
FFICFLUSHING FINL CORP0.05%30,161$463,27330,161New$15.3613F
HTBKHERITAGE COMM CORP0.05%37,992$474,1404,06811.99%$12.4813F
ONTFON24 INC0.05%60,364$488,94860,364New$8.113F
UALUNITED AIRLS HLDGS INC0.05%5,000$460,3505,000New$92.0713F
ALKALASKA AIR GROUP INC0.04%10,265$377,54710,265New$36.7813F
FFWMFIRST FNDTN INC0.04%67,573$398,6811,6542.51%$5.913F
PACBPACIFIC BIOSCIENCES CALIF IN0.04%272,040$359,093272,040New$1.3213F
VCTRVICTORY CAP HLDGS INC DEL0.04%5,120$335,2585,120New$65.4813F
VKTXVIKING THERAPEUTICS INC0.04%10,280$334,51110,280New$32.5413F
PYPLPAYPAL HLDGS INC0.03%5,124$231,7595,124New$45.2313F
UPSUNITED PARCEL SVCS INC0.03%2,520$247,9182,520New$98.3813F
ALEXAlexander & Baldwin Inc-263,012Exited13F
FAmicus Therapeutics Inc (Call)-451,000Exited13F
ATXSAstria Therapeutics Inc-615,790Exited13F
RNAAvidity Biosciences Inc-168,385Exited13F
RNAAvidity Biosciences Inc (Put)-168,700Exited13F
BLBLACKLINE INC (PRN)-3,071,000Exited13F
BAPRABOEING CO/THE-80,000Exited13F
CADECadence Bank-297,603Exited13F
DAYDayforce Inc-47,453Exited13F
CDTXCidara Therapeutics Inc-150,708Exited13F
CDTXCidara Therapeutics Inc (Put)-76,900Exited13F
CIOCity Office REIT Inc-61,498Exited13F
CMAComerica Inc-398,037Exited13F
CFLTConfluent Inc-640,113Exited13F
CFLTCONFLUENT INC (PRN)-5,000,000Exited13F
CORZCore Scientific Inc (Call)-143,800Exited13F
DENNDenny's Corp-213,445Exited13F
DVAXDynavax Technologies Corp-610,261Exited13F
WTRGEssential Utilities Inc-36,646Exited13F
EVHEVOLENT HEALTH INC (PRN)-2,000,000Exited13F
EXASExact Sciences Corp-350,009Exited13F
FRGEForge Global Holdings Inc-197,075Exited13F
HIHillenbrand Inc-399,006Exited13F
HIHillenbrand Inc (Put)-315,000Exited13F
HOLXHologic Inc (Put)-60,600Exited13F
ITRIITRON INC (PRN)-2,500,000Exited13F
JAMFJamf Holding Corp-985,069Exited13F
KVUEKenvue Inc (Call)-118,400Exited13F
KMBKimberly-Clark Corp (Call)-42,200Exited13F
SHCOSoho House & Co Inc-70,756Exited13F
MOFGMidWestOne Financial Group Inc-21,980Exited13F
NGDNew Gold Inc-226,878Exited13F
EBEventbrite Inc-987,653Exited13F
FSFGFirst Savings Financial Group-8,788Exited13F
ZEUSOlympic Steel Inc-16,293Exited13F
PLYMPlymouth Industrial REIT Inc-559,215Exited13F
QRVOQorvo Inc-109,521Exited13F
REVGREV Group Inc-31,261Exited13F
HOUSAnywhere Real Estate Inc-444,821Exited13F
HOUSAnywhere Real Estate Inc (Call)-71,100Exited13F
HOUSAnywhere Real Estate Inc (Put)-71,100Exited13F
SPYMState Street SPDR S&P 500 ETF (Call)-25,000Exited13F
SPOTSPOTIFY USA INC (PRN)-5,000,000Exited13F
STAASTAAR Surgical Co-67,862Exited13F
SNVSynovus Financial Corp-403,650Exited13F
TECKTeck Resources Ltd (Put)-292,100Exited13F
TGNATEGNA Inc-1,179,885Exited13F
THSTreeHouse Foods Inc-99,421Exited13F
TRUETrueCar Inc-173,620Exited13F
AHLAspen Insurance Holdings Ltd-572,685Exited13F
AVDLAvadel Pharmaceuticals PLC-1,087,117Exited13F
CYBRCyberArk Software Ltd-86,648Exited13F