WATER ISLAND CAPITAL LLC Portfolio Holdings
Q3 2025•57 long positions•$641.5M portfolio value
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Holding89 | Sector | Position↕ | Traded↕ | Ownership↕ | Shares Δ↕ | Shares Δ % | Market Cap↕ | Owned Since↕ |
|---|---|---|---|---|---|---|---|---|
Software - Infrastructure Technology | $41.5M 6.46% | +$41.5M New | 0.17% 85.8K shares | 0 → 85.8K +$41.5M | New | $24.4B Large Cap | Q3 2025 Held for 2 months | |
Railroads Industrials | $37.8M 5.89% | +$37.8M Bought | 0.056% 125.8K shares | — | — | $67.4B Large Cap | Q3 2025 Held for 2 months | |
Unknown Unknown | $31.0M 4.83% | +$31.0M New | — 290.2K shares | 0 → 290.2K +$31.0M | New | — — | Q3 2025 Held for 2 months | |
Software - Infrastructure Technology | $28.7M 4.47% | +$9.2M Bought | 1.39% 2.9M shares | 2.0M → 2.9M +$9.2M | +46.99% | $2.1B Mid Cap | Q2 2025 Held for 5 months | |
Software - Infrastructure Technology | $28.6M 4.45% | +$8.5M Bought | 0.377% 1.1M shares | 806.2K → 1.1M +$8.5M | +42.59% | $7.6B Mid Cap | Q2 2025 Held for 5 months | |
Banks - Regional Financial Services | $27.4M 4.26% | +$27.4M New | 1.49% 815.7K shares | 0 → 815.7K +$27.4M | New | $1.8B Small Cap | Q3 2025 Held for 2 months | |
Unknown Unknown | $25.5M 3.97% | +$10.6M Bought | 0.428% 450.7K shares | 262.5K → 450.7K +$10.6M | +71.65% | $6.0B Mid Cap | Q2 2025 Held for 5 months | |
Industrial - Machinery Industrials | $25.5M 3.97% | +$25.5M New | 0.283% 127.2K shares | 0 → 127.2K +$25.5M | New | $9.0B Mid Cap | Q3 2025 Held for 2 months | |
Broadcasting Communication Services | $24.9M 3.88% | +$24.9M Bought | 0.76% 1.2M shares | — | — | $3.3B Mid Cap | Q3 2025 Held for 2 months | |
Software - Infrastructure Technology | $24.4M 3.8% | +$24.4M New | 1.99% 1.2M shares | 0 → 1.2M +$24.4M | New | $1.2B Small Cap | Q3 2025 Held for 2 months | |
Restaurants Consumer Cyclical | $23.0M 3.59% | +$23.0M New | 4.47% 1.4M shares | 0 → 1.4M +$23.0M | New | $515.5M Small Cap | Q3 2025 Held for 2 months | |
Unknown Unknown | $22.8M 3.55% | +$22.8M Bought | — 620.2K shares | — | — | — — | Q3 2025 Held for 2 months | |
Information Technology Services Technology | $22.6M 3.52% | +$22.6M New | 0.689% 296.0K shares | 0 → 296.0K +$22.6M | New | $3.3B Mid Cap | Q3 2025 Held for 2 months | |
Banks - Regional Financial Services | $20.7M 3.22% | +$20.7M New | 0.304% 421.5K shares | 0 → 421.5K +$20.7M | New | $6.8B Mid Cap | Q3 2025 Held for 2 months | |
Rental & Leasing Services Industrials | $19.1M 2.98% | +$19.1M New | 0.269% 300.7K shares | 0 → 300.7K +$19.1M | New | $7.1B Mid Cap | Q3 2025 Held for 2 months | |
Software - Application Technology | $18.5M 2.89% | +$18.5M New | 1.26% 930.2K shares | 0 → 930.2K +$18.5M | New | $1.5B Small Cap | Q3 2025 Held for 2 months | |
Software - Application Technology | $18.1M 2.82% | +$18.1M New | 0.754% 421.4K shares | 0 → 421.4K +$18.1M | New | $2.4B Mid Cap | Q3 2025 Held for 2 months | |
Electronic Gaming & Multimedia Technology | $17.9M 2.79% | +$17.9M New | 0.036% 88.6K shares | 0 → 88.6K +$17.9M | New | $50.3B Large Cap | Q3 2025 Held for 2 months | |
Medical - Instruments & Supplies Healthcare | $17.7M 2.76% | +$17.7M New | 1.33% 658.3K shares | 0 → 658.3K +$17.7M | New | $1.3B Small Cap | Q3 2025 Held for 2 months | |
Apparel - Manufacturers Consumer Cyclical | $14.9M 2.33% | +$14.9M New | 0.64% 2.3M shares | 0 → 2.3M +$14.9M | New | $2.3B Mid Cap | Q3 2025 Held for 2 months | |
Software - Infrastructure Technology | $14.1M 2.2% | +$14.1M New | 0.256% 785.4K shares | 0 → 785.4K +$14.1M | New | $5.5B Mid Cap | Q3 2025 Held for 2 months | |
Software - Application Technology | $12.7M 1.97% | +$12.7M New | 0.116% 183.7K shares | 0 → 183.7K +$12.7M | New | $10.9B Large Cap | Q3 2025 Held for 2 months | |
Software - Application Technology | $12.1M 1.88% | +$12.1M New | 0.936% 1.6M shares | 0 → 1.6M +$12.1M | New | $1.3B Small Cap | Q3 2025 Held for 2 months | |
Rental & Leasing Services Industrials | $11.6M 1.82% | +$16.2K Bought | 0.404% 99.4K shares | 99.2K → 99.4K +$16.2K | +0.14% | $2.9B Mid Cap | Q1 2024 Held for 1y 8m | |
Software - Application Technology | $11.3M 1.76% | +$11.3M New | 1.02% 492.5K shares | 0 → 492.5K +$11.3M | New | $1.1B Small Cap | Q3 2025 Held for 2 months | |
Advertising Agencies Communication Services | $10.9M 1.7% | +$10.9M New | 0.642% 1.1M shares | 0 → 1.1M +$10.9M | New | $1.7B Small Cap | Q3 2025 Held for 2 months | |
Industrial Materials Basic Materials | $9.2M 1.44% | +$9.2M Bought | 0.043% 209.9K shares | — | — | $21.4B Large Cap | Q3 2025 Held for 2 months | |
Biotechnology Healthcare | $9.0M 1.41% | +$9.0M New | 0.127% 96.0K shares | 0 → 96.0K +$9.0M | New | $7.1B Mid Cap | Q3 2025 Held for 2 months | |
Telecommunications Services Communication Services | $8.0M 1.25% | +$8.0M New | 1.82% 1.6M shares | 0 → 1.6M +$8.0M | New | $442.6M Small Cap | Q3 2025 Held for 2 months | |
Medical - Healthcare Information Services Healthcare | $7.7M 1.21% | +$7.7M New | 0.337% 278.4K shares | 0 → 278.4K +$7.7M | New | $2.3B Mid Cap | Q3 2025 Held for 2 months | |
REIT - Office Real Estate | $6.3M 0.978% | +$6.3M New | 0.434% 958.9K shares | 0 → 958.9K +$6.3M | New | $1.4B Small Cap | Q3 2025 Held for 2 months | |
Insurance - Property & Casualty Financial Services | $5.0M 0.787% | -$8.1M Sold | 0.409% 210.5K shares | 547.4K → 210.5K −$8.1M | -61.55% | $1.2B Small Cap | Q1 2025 Held for 8 months | |
Real Estate - Services Real Estate | $4.8M 0.754% | +$4.8M New | 0.408% 456.6K shares | 0 → 456.6K +$4.8M | New | $1.2B Small Cap | Q3 2025 Held for 2 months | |
Biotechnology Healthcare | $4.1M 0.64% | -$1.1M Sold | 0.338% 762.1K shares | 957.0K → 762.1K −$1.1M | -20.36% | $1.2B Small Cap | Q2 2025 Held for 5 months | |
Gold Basic Materials | $2.7M 0.418% | +$2.7M New | 0.073% 214.2K shares | 0 → 214.2K +$2.7M | New | $3.7B Mid Cap | Q3 2025 Held for 2 months | |
Biotechnology Healthcare | $2.4M 0.38% | +$2.4M New | 0.198% 51.0K shares | 0 → 51.0K +$2.4M | New | $1.2B Small Cap | Q3 2025 Held for 2 months | |
Telecommunications Services Communication Services | $2.3M 0.355% | +$2.3M Bought | 0.025% 35.8K shares | — | — | $9.1B Mid Cap | Q4 2024 Held for 11 months | |
Advertising Agencies Communication Services | $1.8M 0.275% | -$146.9K Sold | 0.017% 63.1K shares | 68.4K → 63.1K −$146.9K | -7.7% | $10.2B Large Cap | Q4 2024 Held for 11 months | |
Information Technology Services Technology | $1.7M 0.265% | -$8.3M Sold | 0.219% 160.9K shares | 944.9K → 160.9K −$8.3M | -82.97% | $775.5M Small Cap | Q2 2025 Held for 5 months | |
Business Equipment & Supplies Industrials | $1.6M 0.254% | +$1.6M New | 0.083% 94.9K shares | 0 → 94.9K +$1.6M | New | $2.0B Small Cap | Q3 2025 Held for 2 months | |
Medical - Devices Healthcare | $1.4M 0.214% | +$1.4M New | 0.256% 72.4K shares | 0 → 72.4K +$1.4M | New | $534.3M Small Cap | Q3 2025 Held for 2 months | |
Shell Companies Financial Services | $1.3M 0.197% | +$446.7K Bought | 0.125% 103.3K shares | 66.7K → 103.3K +$446.7K | +54.88% | $1.0B Small Cap | Q2 2025 Held for 5 months | |
Furnishings, Fixtures & Appliances Consumer Cyclical | $1.2M 0.191% | +$1.2M New | 0.126% 18.3K shares | 0 → 18.3K +$1.2M | New | $972.6M Small Cap | Q3 2025 Held for 2 months | |
Software - Infrastructure Technology | $1.2M 0.188% | +$1.2M New | 0.29% 86.2K shares | 0 → 86.2K +$1.2M | New | $414.7M Small Cap | Q3 2025 Held for 2 months | |
Unknown Unknown | $980.1K 0.153% | +$980.1K New | 0.018% 18.7K shares | 0 → 18.7K +$980.1K | New | $5.5B Mid Cap | Q3 2025 Held for 2 months | |
Oil & Gas Equipment & Services Energy | $845.1K 0.132% | +$845.1K Bought | 0.069% 58.6K shares | — | — | $1.2B Small Cap | Q3 2025 Held for 2 months | |
Diversified Utilities Utilities | $838.3K 0.131% | +$838.3K New | 0.023% 14.3K shares | 0 → 14.3K +$838.3K | New | $3.6B Mid Cap | Q3 2025 Held for 2 months | |
Medical - Care Facilities Healthcare | $609.1K 0.095% | -$233.4K Sold | 0.131% 42.9K shares | 59.3K → 42.9K −$233.4K | -27.71% | $465.2M Small Cap | Q4 2024 Held for 11 months | |
Travel Lodging Consumer Cyclical | $580.0K 0.09% | +$580.0K New | 0.034% 65.5K shares | 0 → 65.5K +$580.0K | New | $1.7B Small Cap | Q3 2025 Held for 2 months | |
Unknown Unknown | $562.5K 0.088% | +$562.5K New | 0.092% 72.8K shares | 0 → 72.8K +$562.5K | New | $614.6M Small Cap | Q3 2025 Held for 2 months |
