Perma Fix Environmental Services Inc (NASDAQ:PESI) has 81 institutional investors with active 13F positions as of December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| BlackRock, Inc. | 31 Mar, 2026 | 1,170,303 | -27,682 | -2.31% | $12,510,539.00 |
| MAK CAPITAL ONE LLC | 31 Mar, 2026 | 918,673 | 0 | 0.00% | $9,820,614.00 |
| PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | 31 Mar, 2026 | 777,142 | 0 | 0.00% | $8,307,648.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 759,435 | 759,435 | 0.00% | $8,118,360.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 432,701 | 9,811 | 2.32% | $4,626,994.00 |
| HEARTLAND ADVISORS INC | 31 Mar, 2026 | 400,000 | 0 | 0.00% | $4,276,000.00 |
| DIAMOND HILL CAPITAL MANAGEMENT INC | 31 Mar, 2026 | 355,978 | -30,865 | -7.98% | $3,805,405.00 |
| State Street Corp | 31 Mar, 2026 | 335,547 | 23,280 | 7.46% | $3,586,997.00 |
| Potomac Capital Management, Inc. | 31 Mar, 2026 | 296,700 | -45,100 | -13.19% | $3,171,723.00 |
| GROUP ONE TRADING LLC | 31 Mar, 2026 | 247,674 | 243,647 | 6,050.34% | $2,647,635.00 |
| DIMENSIONAL FUND ADVISORS LP | 31 Mar, 2026 | 163,787 | -1,000 | -0.61% | $1,750,465.00 |
| Goldman Sachs Group Inc | 31 Mar, 2026 | 142,687 | -1,187 | -0.83% | $1,525,324.00 |
| Northern Trust Corp | 31 Mar, 2026 | 129,568 | 6,059 | 4.91% | $1,385,082.00 |
| North Star Investment Management Corp. | 31 Mar, 2026 | 120,532 | 116,132 | 2,639.36% | $1,288,487.00 |
| MYDA Advisors LLC | 31 Mar, 2026 | 120,000 | 20,000 | 20.00% | $1,282,800.00 |
| VANGUARD FIDUCIARY TRUST CO | 31 Mar, 2026 | 119,253 | 119,253 | 0.00% | $1,274,815.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Mar, 2026 | 100,318 | 100,318 | 0.00% | $1,072,399.00 |
| CITADEL ADVISORS LLC | 31 Mar, 2026 | 69,313 | 33,184 | 91.85% | $740,956.00 |
| D. E. Shaw & Co., Inc. | 31 Mar, 2026 | 62,989 | -33,020 | -34.39% | $673,352.00 |
| UBS Group AG | 31 Mar, 2026 | 62,082 | 33,118 | 114.34% | $663,657.00 |