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Perma-Fix Environmental Services
PESI

Overview Fund Activity

74 hedge funds and large institutions have $48.8M invested in Perma-Fix Environmental Services in 2025 Q1 according to their latest regulatory filings, with 12 funds opening new positions, 30 increasing their positions, 17 reducing their positions, and 9 closing their positions.

Holders
74
Holders Change
+2
Holders Change %
+2.78%
% of All Funds
1.01%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
12
Increased
30
Reduced
17
Closed
9
Calls
$109K
Puts
$441K
Net Calls
-$332K
Net Calls Change
-$996K

Top Buyers

1
Citadel Advisors
1
Citadel Advisors
Florida
$821K
2
Diamond Hill Capital Management
2
Diamond Hill Capital Management
Ohio
$3.03M
3
VanEck Associates
3
VanEck Associates
New York
$1.6M
4
AA
4
Ancora Advisors
Ohio
$1.15M
5
Squarepoint
5
Squarepoint
New York
$531K

Top Sellers

1
AIC
1
AWM Investment Company
New York
$0
2
Alyeska Investment Group
2
Alyeska Investment Group
Illinois
$1.07M
3
PAMP
3
Polar Asset Management Partners
Ontario, Canada
$0
4
TSW
4
Thompson Siegel & Walmsley
Virginia
$762K
5
BFM
5
Boothbay Fund Management
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
BlackRock
1
BlackRock
New York
$7.94M 1,092,522 +62,886 +6%
Vanguard Group
2
Vanguard Group
Pennsylvania
$6.44M 885,387 +16,432 +2%
PGCM
3
Prescott Group Capital Management
Oklahoma
$5.65M 777,142 +30,200 +4%
HA
4
Heartland Advisors
Wisconsin
$3.31M 455,400 +55,400 +14%
Diamond Hill Capital Management
5
Diamond Hill Capital Management
Ohio
$3.03M 416,662 +101,145 +32%
Geode Capital Management
6
Geode Capital Management
Massachusetts
$2.86M 393,178 +66,056 +20%
VanEck Associates
7
VanEck Associates
New York
$1.6M 220,012 +82,302 +60%
MA
8
MYDA Advisors
New York
$1.45M 200,000 -25,000 -11%
State Street
9
State Street
Massachusetts
$1.4M 192,274 +9,124 +5%
EIM
10
Essex Investment Management
Massachusetts
$1.39M 191,087 -1,246 -0.6%
PCM
11
Perritt Capital Management
Illinois
$1.36M 187,700 -4,750 -2%
AA
12
Ancora Advisors
Ohio
$1.15M 157,845 +75,967 +93%
Alyeska Investment Group
13
Alyeska Investment Group
Illinois
$1.07M 147,417 -552,583 -79%
Northern Trust
14
Northern Trust
Illinois
$1.01M 139,204 +18,446 +15%
AIP
15
ARS Investment Partners
New York
$921K 83,239 – –
Dimensional Fund Advisors
16
Dimensional Fund Advisors
Texas
$902K 123,962 +12,343 +11%
Citadel Advisors
17
Citadel Advisors
Florida
$821K 112,903 +112,640 +42,829%
TSW
18
Thompson Siegel & Walmsley
Virginia
$762K 104,778 -110,822 -51%
Squarepoint
19
Squarepoint
New York
$531K 73,014 +73,014 New
UBS Group
20
UBS Group
Switzerland
$415K 57,052 +1,366 +2%
LCM
21
Legato Capital Management
California
$411K 56,598 -671 -1%
Susquehanna International Group
22
Susquehanna International Group
Pennsylvania
$387K 53,214 +9,064 +21%
Charles Schwab
23
Charles Schwab
California
$336K 46,244 +6,009 +15%
Morgan Stanley
24
Morgan Stanley
New York
$267K 36,753 -4,241 -10%
Bank of New York Mellon
25
Bank of New York Mellon
New York
$246K 33,883 +1,757 +5%
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