WATER ISLAND CAPITAL LLC
Follow13F filer, CIK 1222765, NEW YORK, NY
WATER ISLAND CAPITAL LLC reported $793,313,130 across 84 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-14. Its ten largest share positions make up 42.25% of the portfolio.
Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001222765-25-000021
- Period
- 2025-09-30
- Reported value
- $793M
- Holdings
- 84
- Top 10 weight
- 42.25%
- New
- 58
- Sold out
- 50
Largest buys vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| CYBERARK SOFTWARE LTD/ISRAELnew | +85,799 | $41.5M |
| NSCnew | +125,799 | $37.8M |
| VERONA PHARMA PLCnew | +290,182 | $31M |
| VERITEX HLDGS INCnew | +815,698 | $27.4M |
| GTLSnew | +127,171 | $25.5M |
Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.
Largest sells vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| AMEDISYS INCexited | -561,814 | -$55.3M |
| ANSYS INCexited | -113,285 | -$39.8M |
| JUNIPER NETWORKS INCexited | -928,961 | -$37.1M |
| HESS CORPexited | -260,459 | -$36.1M |
| SPRINGWORKS THERAPEUTICS INCexited | -703,525 | -$33.1M |
Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.
Holdings, Q3 2025
Share positions as resolved from 13F-HR 0001222765-25-000021, largest first. % of portfolio is the value over $698,238,216, the sum of the share positions whose value is usable for ratios (method).
| Security | History | Shares | Value | % of portfolio | Change | Latest event | Timeline |
|---|---|---|---|---|---|---|---|
| CYBERARK SOFTWARE LTD/ISRAELCYBERARK SOFTWARE LTD/ISRAEL | 85,799 | $41.5M | 5.94% | new | |||
| NSCNORFOLK SOUTHN CORP | 125,799 | $37.8M | 5.41% | new | Timeline | ||
| VERONA PHARMA PLCVERONA PHARMA PLC | 290,182 | $31M | 4.43% | new | |||
| AVIDXCHANGE HOLDINGS INCAVIDXCHANGE HOLDINGS INC | 2,882,867 | $28.7M | 4.11% | +921,533 | |||
| INFORMATICA INCINFORMATICA INC | 1,149,598 | $28.6M | 4.09% | +343,370 | |||
| VERITEX HLDGS INCVERITEX HLDGS INC | 815,698 | $27.4M | 3.92% | new | |||
| TXNMTXNM ENERGY INC | 450,660 | $25.5M | 3.65% | +188,121 | Timeline | ||
| GTLSCHART INDS INC | 127,171 | $25.5M | 3.65% | new | Timeline | ||
| TGNATEGNA INC | 1,223,508 | $24.9M | 3.56% | new | Timeline | ||
| VERINT SYS INCVERINT SYS INC | 1,202,967 | $24.4M | 3.49% | new | |||
| POTBELLY CORPPOTBELLY CORP | 1,351,588 | $23M | 3.3% | new | |||
| ASPEN INSURANCE HOLDINGS-AASPEN INSURANCE HOLDINGS-A | 620,249 | $22.8M | 3.26% | new | |||
| WNS HLDGS LTD COM SHSWNS HLDGS LTD COM SHS | 296,042 | $22.6M | 3.23% | new | |||
| SNVSYNOVUS FINANCIAL CORP | 421,500 | $20.7M | 2.96% | new | Timeline | ||
| ALAIR LEASE CORP | 300,677 | $19.1M | 2.74% | new | Timeline | ||
| MERIDIANLINK INCMERIDIANLINK INC | 930,234 | $18.5M | 2.66% | new | |||
| SAPIENS INTERNATIONAL CORPSAPIENS INTERNATIONAL CORP | 421,434 | $18.1M | 2.6% | new | |||
| EAELECTRONIC ARTS INC | 88,590 | $17.9M | 2.56% | new | Timeline | ||
| STAASTAAR SURGICAL CO | 658,317 | $17.7M | 2.53% | new | Timeline | ||
| HANESBRANDS INCHANESBRANDS INC | 2,264,676 | $14.9M | 2.14% | new | |||
| CORZCORE SCIENTIFIC INC NEW | 785,446 | $14.1M | 2.02% | new | Timeline | ||
| DAYDAYFORCE INC | 183,721 | $12.7M | 1.81% | new | Timeline | ||
| VIMEO INCVIMEO INC | 1,555,942 | $12.1M | 1.73% | new | |||
| MGRCMCGRATH RENTCORP | 99,363 | $11.6M | 1.67% | +138 | Timeline | ||
| PROPROS Holdings Inc | 492,502 | $11.3M | 1.62% | new | Timeline | ||
| INTEGRAL AD SCIENCE HLDNG COINTEGRAL AD SCIENCE HLDNG CO | 1,071,160 | $10.9M | 1.56% | new | |||
| TECKTECK RESOURCES LTD | 209,900 | $9.21M | 1.32% | new | Timeline | ||
| MERUS N VMERUS N V | 96,000 | $9.04M | 1.29% | new | |||
| WIDEOPENWEST INCWIDEOPENWEST INC | 1,558,174 | $8.04M | 1.15% | new | |||
| PREMIER INCPREMIER INC | 278,420 | $7.74M | 1.11% | new | |||
| PGREPARAMOUNT GROUP INC | 958,918 | $6.27M | 0.9% | new | Timeline | ||
| BAPRABOEING CO | 80,000 | $5.57M | 0.8% | 0 | Timeline | ||
| PRAPROASSURANCE CORP | 210,461 | $5.05M | 0.72% | -336,894 | Timeline | ||
| HOUSANYWHERE REAL ESTATE INC | 456,600 | $4.84M | 0.69% | new | Timeline | ||
| CUREVAC NVCUREVAC NV | 762,138 | $4.11M | 0.59% | -194,893 | |||
| Sandstorm Gold LtdSandstorm Gold Ltd | 214,205 | $2.68M | 0.38% | new | |||
| Tourmaline Bio IncTourmaline Bio Inc | 50,968 | $2.44M | 0.35% | new | |||
| LBRDKLIBERTY BROADBAND CORP | 35,810 | $2.28M | 0.33% | new | Timeline | ||
| INTERPUBLIC GROUP COSINTERPUBLIC GROUP COS | 63,104 | $1.76M | 0.25% | -5,263 | |||
| CTLPCANTALOUPE INC | 160,907 | $1.7M | 0.24% | -783,996 | Timeline | ||
| SCSSTEELCASE INC-CLASS A | 94,905 | $1.63M | 0.23% | new | Timeline | ||
| ZIMVIE INCZIMVIE INC | 72,353 | $1.37M | 0.2% | new | |||
| MAC Copper LtdMAC Copper Ltd | 103,254 | $1.26M | 0.18% | +36,586 | |||
| AMWDAMERICAN WOODMARK CORP | 18,336 | $1.22M | 0.18% | new | Timeline | ||
| IMXIINTERNATIONAL MONEY EXPRESS | 86,175 | $1.2M | 0.17% | new | Timeline | ||
| MTSRMETSERA INC | 18,730 | $980K | 0.14% | new | Timeline | ||
| MRC GLOBAL INCMRC GLOBAL INC | 58,605 | $845K | 0.12% | new | |||
| NWENORTHWESTERN ENERGY GROUP IN | 14,303 | $838K | 0.12% | new | Timeline | ||
| CCRNCROSS CTRY HEALTHCARE INC | 42,897 | $609K | 0.09% | -16,440 | Timeline | ||
| SOHO HOUSE & CO INCSOHO HOUSE & CO INC | 65,542 | $580K | 0.08% | new | |||
| PERFORMANT HEALTHCARE INCPERFORMANT HEALTHCARE INC | 72,772 | $563K | 0.08% | new | |||
| BRYBerry Corp | 142,979 | $540K | 0.08% | new | Timeline | ||
| PROVIDENT BANCORP INCPROVIDENT BANCORP INC | 40,282 | $505K | 0.07% | +21,709 | |||
| CORECARD CORPORATIONCORECARD CORPORATION | 16,595 | $447K | 0.06% | new | |||
| CIOCITY OFFICE REIT INC | 54,317 | $378K | 0.05% | new | Timeline | ||
| HARBORONE BANCORP INC NEWHARBORONE BANCORP INC NEW | 22,464 | $306K | 0.04% | +2,748 | |||
| AURAAURA BIOSCIENCES INC | 10,372 | $64.1K | 0.01% | new | Timeline | ||
| PACBPACIFIC BIOSCIENCES CALIF IN | 35,754 | $45.8K | 0.01% | new | Timeline |
Options
Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).
| Security | Type | Amount | Value | Change |
|---|---|---|---|---|
| SYNOVUS FINL CORPSYNOVUS FINL CORP COM NEW | put | 421,500 | $20.7M | new |
| CORE SCIENTIFIC INC NEWCORE SCIENTIFIC INC NEW PUT | put | 1,042,000 | $18.7M | new |
| TECK RESOURCES LTDTECK RESOURCES LTD CL B | put | 209,600 | $9.2M | new |
| MERUS N VMERUS N V PUT | put | 96,000 | $9.04M | new |
| VERONA PHARMA PLCVERONA PHARMA PLC Equity Put | put | 84,100 | $8.97M | new |
| KELLOGG COKELLOGG CO COM | call | 108,800 | $8.92M | new |
| 89BIO INC89BIO INC Equity Call | call | 493,500 | $7.25M | new |
| COMPASS INCCOMPASS INC CALL | call | 655,600 | $5.26M | new |
| REALOGY HOLDINGS CORPREALOGY HOLDINGS CORP Cmn | put | 456,600 | $4.84M | new |
| LIVE NATION ENTERTAINMENT INLIVE NATION ENTERTAINMENT IN CALL | call | 7,500 | $1.23M | -2,500 |
| METSERA INCMETSERA INC Equity Put | put | 18,700 | $979K | new |
Principal amounts
Notes and convertibles filed as a face amount (PRN). A face amount is never added to a share count (H6).
| Security | Type | Amount | Value | Change |
|---|---|---|---|---|
| SPOTIFY USA INCSPOTIFY USA INC NOTE 3/1 | principal | 5,000,000 | $6.83M | 0 |
| UBER TECHNOLOGIES INCUBER TECHNOLOGIES INC NOTE 12/1 | principal | 5,000,000 | $6.09M | 0 |
| BENTLEY SYS INCBENTLEY SYS INC NOTE 0.375% 7/0 | principal | 5,000,000 | $4.71M | 0 |
| AKAMAI TECHNOLOGIES INCAKAMAI TECHNOLOGIES INC NOTE 0.375% 9/0 | principal | 4,500,000 | $4.31M | 0 |
| REDFIN CORPREDFIN CORP NOTE 0.500% 4/0 | principal | 4,500,000 | $4.17M | 0 |
| TXNM ENERGY INCTXNM ENERGY INC NOTE 5.750% 6/0 | principal | 3,000,000 | $3.97M | 0 |
| HALOZYME THERAPEUTICS INCHALOZYME THERAPEUTICS INC NOTE 0.250% 3/0 | principal | 3,000,000 | $3.43M | 0 |
| DEXCOM INCDEXCOM INC NOTE 0.375% 5/1 | principal | 3,500,000 | $3.2M | 0 |
| BLACKLINE INCBLACKLINE INC NOTE 3/1 | principal | 3,071,000 | $2.99M | 0 |
| VERINT SYSTEMS INCVERINT SYSTEMS INC BOND | principal | 3,000,000 | $2.94M | 0 |
| RAPID7 INCRAPID7 INC NOTE 0.250% 3/1 | principal | 2,500,000 | $2.34M | 0 |
| GLADSTONE CAP CORPGLADSTONE CAP CORP NOTE 5.875%10/0 | principal | 2,000,000 | $1.98M | new |
| EVOLENT HEALTH INCEVOLENT HEALTH INC NOTE 3.500%12/0 | principal | 2,000,000 | $1.62M | new |
| FUBOTV INCFUBOTV INC NOTE 3.250% 2/1 | principal | 1,591,000 | $1.58M | 0 |
| REDWOOD TRUST INCREDWOOD TRUST INC Convertible | principal | 1,000,000 | $1.02M | new |
Sold out in Q3 2025
Positions in the previous quarter's report that this quarter's report no longer lists.
| Security | Shares before | Value before | Type |
|---|---|---|---|
| AMEDISYS INCAMEDISYS INC | 561,814 | $55.3M | shares |
| CHEVRON CORPORATIONCHEVRON CORPORATION | 280,300 | $40.1M | call |
| ANSYS INCANSYS INC | 113,285 | $39.8M | shares |
| JUNIPER NETWORKS INCJUNIPER NETWORKS INC | 928,961 | $37.1M | shares |
| HESS CORPHESS CORP | 260,459 | $36.1M | shares |
| SPRINGWORKS THERAPEUTICS INCSPRINGWORKS THERAPEUTICS INC | 703,525 | $33.1M | shares |
| DUN & BRADSTREET HLDGS INCDUN & BRADSTREET HLDGS INC | 3,147,738 | $28.6M | shares |
| SKXSKECHERS U S A INC | 426,562 | $26.9M | shares |
| FOOT LOCKER INCFOOT LOCKER INC | 777,436 | $19M | shares |
| SKECHERS USA INC-CL ASKECHERS USA INC-CL A | 286,100 | $18.1M | put |
| ENSTAR GROUP LIMITEDENSTAR GROUP LIMITED | 53,653 | $18M | shares |
| FARO TECHNOLOGIES INCFARO TECHNOLOGIES INC | 383,836 | $16.9M | shares |
| BLUEPRINT MEDICINES CORPBLUEPRINT MEDICINES CORP | 116,631 | $14.9M | shares |
| PACIFIC PREMIER BANCORP INCPACIFIC PREMIER BANCORP INC | 532,149 | $11.2M | shares |
| E2OPEN PARENT HOLDINGS INCE2OPEN PARENT HOLDINGS INC | 3,185,939 | $10.3M | shares |
| GMS INCGMS INC | 88,627 | $9.64M | shares |
| WALGREENS BOOTS ALLIANCE INCWALGREENS BOOTS ALLIANCE INC | 820,000 | $9.41M | put |
| INFORMATICA INCINFORMATICA INC | 366,600 | $8.93M | call |
| SPRINGWORKS THERAPEUTICS INCSPRINGWORKS THERAPEUTICS INC | 189,900 | $8.92M | put |
| Couchbase IncCouchbase Inc | 363,000 | $8.85M | shares |
| GMS INCGMS INC | 81,300 | $8.84M | call |
| SKECHERS USA INC-CL ASKECHERS USA INC-CL A | 139,000 | $8.77M | call |
| SPARTANNASH COSPARTANNASH CO | 302,396 | $8.01M | shares |
| WALGREENS BOOTS ALLIANCE INCWALGREENS BOOTS ALLIANCE INC | 644,300 | $7.4M | call |
| PARAMOUNT GLOBALPARAMOUNT GLOBAL | 567,122 | $7.32M | shares |
| WALGREENS BOOTS ALLIANCE INCWALGREENS BOOTS ALLIANCE INC | 593,196 | $6.81M | shares |
| SITIO ROYALTIES CORPSITIO ROYALTIES CORP | 333,703 | $6.13M | shares |
| TRIUMPH GROUP INC NEWTRIUMPH GROUP INC NEW | 220,294 | $5.67M | shares |
| FOOT LOCKER INCFOOT LOCKER INC | 178,000 | $4.36M | put |
| KKELLANOVA | 53,318 | $4.24M | shares |
| ISHARES TRISHARES TR | 50,000 | $4.03M | put |
| FYBRFRONTIER COMMUNICATIONS PARE | 109,783 | $4M | shares |
| VERVE THERAPEUTICS INCVERVE THERAPEUTICS INC | 336,000 | $3.77M | put |
| VERVE THERAPEUTICS INCVERVE THERAPEUTICS INC | 335,593 | $3.77M | shares |
| SCHNITZER STEEL INDUSTRIES …SCHNITZER STEEL INDUSTRIES INC | 94,670 | $2.81M | shares |
| DICKS SPORTING GOODS INCDICKS SPORTING GOODS INC | 12,700 | $2.51M | call |
| PARAMOUNT GLOBALPARAMOUNT GLOBAL | 185,200 | $2.39M | put |
| WISDOMTREE INCWISDOMTREE INC | 1,500,000 | $1.66M | principal |
| VIGIL NEUROSCIENCE INCVIGIL NEUROSCIENCE INC | 207,667 | $1.65M | shares |
| ROOKLINE BANCORP INC DELROOKLINE BANCORP INC DEL | 84,076 | $887K | shares |
| INOZYME PHARMA INCINOZYME PHARMA INC | 201,776 | $807K | shares |
| BRIDGE INVT GROUP HLDGS INCBRIDGE INVT GROUP HLDGS INC | 80,349 | $804K | shares |
| GLOBAL BLUE GROUP HOLDING A…GLOBAL BLUE GROUP HOLDING AG ORD … | 92,725 | $693K | shares |
| RKTROCKET COS INC | 46,367 | $657K | shares |
| EVERI HLDGS INCEVERI HLDGS INC | 42,000 | $598K | put |
| BIONTECH SEBIONTECH SE | 4,800 | $511K | call |
| DANA INCDANA INC | 25,000 | $429K | put |
| HRIHERC HLDGS INC | 2,605 | $343K | shares |
| SOUTHERN STS BANCSHARES INC…SOUTHERN STS BANCSHARES INC COM | 7,204 | $262K | shares |
| SURGERY PARTNERS INCSURGERY PARTNERS INC | 10,000 | $222K | call |
How Q3 2025 was built
Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).
| Filing | Role | Amendment | Filed | Accepted | Ingested |
|---|---|---|---|---|---|
| 13F-HR 0001222765-25-000021 | base | 2025-11-14 | acceptance time not in the bulk data set |