Institutions / Water Island Capital LLC / Activity
Activity — Water Island Capital LLC
112 moves.
| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Q1 2026 as of | New | Penumbra Inc Common stock | $39.44M | +120K | 120,095 5.26% of portfolio | medium |
| Q1 2026 as of | Exit | M2682V108 Common stock | $-38.65M | -87K -100.00% | 0 | medium |
| Q1 2026 as of | Exit | Exact Sciences Corp. Common stock | $-35.55M | -350K -100.00% | 0 | medium |
| Q1 2026 as of | Exit | CMA Comerica Inc Common Stock | $-34.60M | -398K -100.00% | 0 | medium |
| Q1 2026 as of | New | Masimo Corporation Common stock | $34.54M | +194K | 194,197 4.60% of portfolio | medium |
| Q1 2026 as of | Exit | 171757206 Common stock | $-33.29M | -151K -100.00% | 0 | medium |
| Q1 2026 as of | New | Webster Financial Corp Common stock | $28.87M | +416K | 415,823 3.85% of portfolio | medium |
| Q1 2026 as of | New | Tri Pointe Homes, Inc. Common stock | $25.06M | +536K | 536,367 3.34% of portfolio | medium |
| Q1 2026 as of | Exit | G29687103 Common stock | $-23.43M | -1.1M -100.00% | 0 | medium |
| Q1 2026 as of | Exit | Tegna Inc Common stock | $-22.90M | -1.2M -100.00% | 0 | medium |
| Q1 2026 as of | New | National Storage Affiliates Trust Common stock | $21.75M | +576K | 576,224 2.90% of portfolio | medium |
| Q1 2026 as of | New | Great Lakes Dredge & Dock Corp Common stock | $21.48M | +1.3M | 1,263,580 2.86% of portfolio | medium |
| Q1 2026 as of | Exit | G05384501 Common stock | $-21.25M | -573K -100.00% | 0 | medium |
| Q1 2026 as of | Trim | Sealed Air Corp Common stock | $-21.16M | -503K -89.97% | 56,071 0.31% of portfolio | medium |
| Q1 2026 as of | New | Arcellx, Inc. Common stock | $21.06M | +183K | 183,409 2.81% of portfolio | medium |
| Q1 2026 as of | New | Day One Biopharmaceuticals, Inc. Common stock | $20.24M | +944K | 944,247 2.70% of portfolio | medium |
| Q1 2026 as of | Exit | 87161C501 Common stock | $-20.20M | -404K -100.00% | 0 | medium |
| Q1 2026 as of | Exit | Confluent, Inc. Common stock | $-19.36M | -640K -100.00% | 0 | medium |
| Q1 2026 as of | Trim | Clearwater Analytics Holdings, Inc. Common stock | $-18.12M | -766K -87.48% | 109,589 0.35% of portfolio | medium |
| Q1 2026 as of | New | Stellar Bancorp, Inc. Common stock | $15.79M | +431K | 431,231 2.10% of portfolio | medium |
| Q1 2026 as of | Trim | Sumisho Air Lease Corp Common stock | $-14.63M | -225K -75.50% | 73,131 0.63% of portfolio | medium |
| Q1 2026 as of | Add | Janus Henderson Group PLC Common stock | $14.12M | +275K +42.44% | 922,277 6.32% of portfolio | medium |
| Q1 2026 as of | Add | Electronic Arts Inc. Common stock | $14.08M | +69K +38.18% | 249,888 6.79% of portfolio | medium |
| Q1 2026 as of | New | Enhabit, Inc. Common stock | $13.87M | +985K | 984,611 1.85% of portfolio | medium |
| Q1 2026 as of | Add | Warner Bros. Discovery, Inc. Common stock | $13.11M | +477K +41.89% | 1,617,020 5.92% of portfolio | medium |
| Q1 2026 as of | Exit | 47074L105 Common stock | $-12.82M | -985K -100.00% | 0 | medium |
| Q1 2026 as of | Exit | Cadence Bank Common stock | $-12.75M | -298K -100.00% | 0 | medium |
| Q1 2026 as of | Exit | 431571108 Common stock | $-12.66M | -399K -100.00% | 0 | medium |
| Q1 2026 as of | Exit | PLYM Plymouth Industrial REIT Inc REIT | $-12.24M | -559K -100.00% | 0 | medium |
| Q1 2026 as of | New | Silicon Laboratories Inc Common stock | $12.16M | +58K | 58,417 1.62% of portfolio | medium |
| Q1 2026 as of | Exit | Avidity Biosciences, Inc. Common stock | $-12.15M | -168K -100.00% | 0 | medium |
| Q1 2026 as of | New | Veris Residential, Inc. Common stock | $11.27M | +597K | 597,390 1.50% of portfolio | medium |
| Q1 2026 as of | New | Peakstone Realty Trust Common stock | $10.52M | +504K | 503,583 1.40% of portfolio | medium |
| Q1 2026 as of | Trim | CSG Systems International Inc Common stock | $-10.43M | -130K -86.58% | 20,223 0.22% of portfolio | medium |
| Q1 2026 as of | New | Terns Pharmaceuticals, Inc. Common stock | $9.94M | +189K | 188,500 1.32% of portfolio | medium |
| Q1 2026 as of | Exit | 268158201 Common stock | $-9.39M | -610K -100.00% | 0 | medium |
| Q1 2026 as of | Exit | Qorvo, Inc. Common stock | $-9.26M | -110K -100.00% | 0 | medium |
| Q1 2026 as of | New | Kennedy-Wilson Holdings, Inc. Common stock | $8.93M | +826K | 825,652 1.19% of portfolio | medium |
| Q1 2026 as of | Exit | FRGE Forge Global Holdings, Inc. Common Stock | $-8.78M | -197K -100.00% | 0 | medium |
| Q1 2026 as of | New | M9T951109 Common stock | $8.74M | +332K | 331,800 1.17% of portfolio | medium |
| Q1 2026 as of | Trim | Amicus Therapeutics Inc Common stock | $-8.71M | -603K -85.27% | 104,066 0.20% of portfolio | medium |
| Q1 2026 as of | Exit | 04635X102 Common stock | $-8.06M | -616K -100.00% | 0 | medium |
| Q1 2026 as of | Add | Hologic Inc Common stock | $6.98M | +92K +19.73% | 560,045 5.64% of portfolio | medium |
| Q1 2026 as of | New | Unifirst Corp Common stock | $6.48M | +26K | 25,743 0.86% of portfolio | medium |
| Q1 2026 as of | Exit | Anywhere Real Estate Inc Common stock | $-6.30M | -445K -100.00% | 0 | medium |
| Q1 2026 as of | Trim | SEMrush Holdings, Inc. Common stock | $-5.91M | -495K -78.70% | 133,872 0.21% of portfolio | medium |
| Q1 2026 as of | Add | Helix Acquisition Corp. III Common stock | $5.76M | +98K +17.08% | 674,867 5.26% of portfolio | medium |
| Q1 2026 as of | Add | DigitalBridge Group, Inc. Common stock | $5.71M | +370K +39.83% | 1,299,051 2.67% of portfolio | medium |
| Q1 2026 as of | Exit | 097023204 Common stock | $-5.52M | -80K -100.00% | 0 | medium |
| Q1 2026 as of | Exit | 014491104 Common stock | $-5.43M | -263K -100.00% | 0 | medium |