Perma-Fix Environmental Services
PESI
69 hedge funds and large institutions have $70.4M invested in Perma-Fix Environmental Services in 2025 Q2 according to their latest regulatory filings, with 7 funds opening new positions, 28 increasing their positions, 20 reducing their positions, and 13 closing their positions.
60% more call options, than puts
Call options by funds: $685K | Put options by funds: $429K
43% more capital invested
Capital invested by funds: $49.4M → $70.4M (+$21M)
40% more repeat investments, than reductions
Existing positions increased: 28 | Existing positions reduced: 20
0.37% less ownership
Funds ownership: 36.63% → 36.26% (-0.37%)
8% less funds holding
Funds holding: 75 → 69 (-6)
46% less first-time investments, than exits
New positions opened: 7 | Existing positions closed: 13
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
State Street
Boston,
Massachusetts
|
+$885K |
| 2 |
MCO
MAK Capital One
New York
|
+$852K |
| 3 |
BlackRock
New York
|
+$809K |
| 4 |
Morgan Stanley
New York
|
+$297K |
| 5 |
Vanguard Group
Malvern,
Pennsylvania
|
+$269K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Alyeska Investment Group
Chicago,
Illinois
|
-$1.07M |
| 2 |
TSW
Thompson Siegel & Walmsley
Richmond,
Virginia
|
-$762K |
| 3 |
Citadel Advisors
Miami,
Florida
|
-$758K |
| 4 |
Squarepoint
New York
|
-$531K |
| 5 |
VanEck Associates
New York
|
-$434K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
TDC
76
Thompson Davis & Co
Richmond,
Virginia
| – | -$97.7K | -13,440 | Closed |
|
77
Renaissance Technologies
New York
| – | -$83.4K | -11,474 | Closed |
|
|
OC
78
Oppenheimer & Co
New York
| – | -$79.6K | -10,950 | Closed |
|
|
CSS
79
Cubist Systematic Strategies
Stamford,
Connecticut
| – | -$76.8K | -10,569 | Closed |
|
80
Simplex Trading
Chicago,
Illinois
| – | -$77.4K | -8,419 | Closed |
|
|
CF
81
Corebridge Financial
Houston,
Texas
| – | -$60.2K | -8,284 | Closed |
|
82
PNC Financial Services Group
Pittsburgh,
Pennsylvania
| – | -$7.95K | -1,094 | Closed |
|
|
ITIM
83
Indiana Trust & Investment Management
Mishawaka,
Indiana
| – | -$473 | -65 | Closed |
|
PESI Hedge Fund Activity: Q2 2025 in Review
69 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Perma-Fix Environmental Services (PESI) for Q2 2025, worth a combined $70.4M — up 43% from $49.4M a quarter earlier.
Sellers outnumbered buyers: 13 funds closed out of PESI and 7 opened new positions — a net loss of 6 holders — while 20 trimmed existing stakes and 28 added.
The largest buyer was State Street, adding an estimated $885K. The largest seller was Alyeska Investment Group, exiting entirely with an estimated $1.07M sold.
- 69 institutional investors held Perma-Fix Environmental Services (PESI) as of Q2 2025, down from 75 in Q1 2025.
- Funds reported $70.4M of Perma-Fix Environmental Services stock for Q2 2025, up 43% quarter-over-quarter.
- 7 funds opened new Perma-Fix Environmental Services positions in Q2 2025 and 13 closed out, a net change of -6 holders.
- The largest Perma-Fix Environmental Services buyer in Q2 2025 was State Street, an estimated $885K added.
- The largest Perma-Fix Environmental Services seller in Q2 2025 was Alyeska Investment Group, an estimated $1.07M sold.
Based on aggregated 13F filings for Q2 2025.