Perma-Fix Environmental Services
PESI
76 hedge funds and large institutions have $49.5M invested in Perma-Fix Environmental Services in 2025 Q1 according to their latest regulatory filings, with 11 funds opening new positions, 31 increasing their positions, 17 reducing their positions, and 9 closing their positions.
82% more repeat investments, than reductions
Existing positions increased: 31 | Existing positions reduced: 17
22% more first-time investments, than exits
New positions opened: 11 | Existing positions closed: 9
3% more funds holding
Funds holding: 74 → 76 (+2)
9.88% less ownership
Funds ownership: 46.61% → 36.74% (-9.9%)
48% less capital inflows, than outflows
Capital inflows: $7.62M | Capital outflows: $14.6M
75% less call options, than puts
Call options by funds: $109K | Put options by funds: $441K
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$1.01M |
| 2 |
Diamond Hill Capital Management
Columbus,
Ohio
|
+$909K |
| 3 |
VanEck Associates
New York
|
+$739K |
| 4 |
Ancora Advisors
Cleveland,
Ohio
|
+$682K |
| 5 |
Squarepoint
New York
|
+$656K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Alyeska Investment Group
Chicago,
Illinois
|
-$4.96M |
| 2 |
AIC
AWM Investment Company
New York
|
-$4.43M |
| 3 |
Polar Asset Management Partners
Toronto,
Ontario, Canada
|
-$1.94M |
| 4 |
Thompson Siegel & Walmsley
Richmond,
Virginia
|
-$996K |
| 5 |
Boothbay Fund Management
New York
|
-$480K |
PESI Hedge Fund Activity: Q1 2025 in Review
76 of the 7,489 institutional investors tracked by Wall St. Rank reported a position in Perma-Fix Environmental Services (PESI) for Q1 2025, worth a combined $49.5M — down 39% from $81.8M a quarter earlier.
Buyers outnumbered sellers: 11 funds opened new PESI positions and 9 closed out — a net gain of 2 holders — while 31 added to existing stakes and 17 trimmed.
The largest buyer was Citadel Advisors, adding an estimated $1.01M. The largest seller was Alyeska Investment Group, cutting an estimated $4.96M.
- 76 institutional investors held Perma-Fix Environmental Services (PESI) as of Q1 2025, up from 74 in Q4 2024.
- Funds reported $49.5M of Perma-Fix Environmental Services stock for Q1 2025, down 39% quarter-over-quarter.
- 11 funds opened new Perma-Fix Environmental Services positions in Q1 2025 and 9 closed out, a net change of +2 holders.
- The largest Perma-Fix Environmental Services buyer in Q1 2025 was Citadel Advisors, an estimated $1.01M added.
- The largest Perma-Fix Environmental Services seller in Q1 2025 was Alyeska Investment Group, an estimated $4.96M sold.
Based on aggregated 13F filings for Q1 2025.