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Jeff Yass’s Perma-Fix Environmental Services PESI Stock Holding History

Jeff Yass’s Portfolio PESI Stock Details PESI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$2.24M Buy
156,934
+145,836
+1,314% +$1.63M ﹤0.01% 6224
2026
Q1 		$119K Sell
11,098
-87,171
-89% -$1.2M ﹤0.01% 12221
2025
Q4 		$1.24M Buy
98,269
+81,151
+474% +$1.03M ﹤0.01% 6692
2025
Q3 		$173K Sell
17,118
-50,123
-75% -$554K ﹤0.01% 11137
2025
Q2 		$707K Buy
67,241
+14,027
+26% +$129K ﹤0.01% 8332
2025
Q1 		$387K Buy
53,214
+9,064
+21% +$81.4K ﹤0.01% 9471
2024
Q4 		$489K Buy
44,150
+10,111
+30% +$133K ﹤0.01% 8720
2024
Q3 		$418K Sell
34,039
-7,775
-19% -$83.1K ﹤0.01% 8899
2024
Q2 		$424K Sell
41,814
-68,429
-62% -$758K ﹤0.01% 8681
2024
Q1 		$1.31M Buy
110,243
+20,011
+22% +$173K ﹤0.01% 6282
2023
Q4 		$709K Buy
90,232
+6,435
+8% +$54.4K ﹤0.01% 7817
2023
Q3 		$876K Buy
83,797
+45,403
+118% +$500K ﹤0.01% 6919
2023
Q2 		$422K Sell
38,394
-29,386
-43% -$306K ﹤0.01% 8714
2023
Q1 		$798K Buy
67,780
+45,441
+203% +$296K ﹤0.01% 7417
2022
Q4 		$78.9K Sell
22,339
-697
-3% -$2.68K ﹤0.01% 11135
2022
Q3 		$103K Buy
+23,036
New +$118K ﹤0.01% 11681
2022
Q1 		– Sell
-12,613
Closed -$80K – 13729
2021
Q4 		$80K Buy
+12,613
New +$87.2K ﹤0.01% 12286
2021
Q1 		– Sell
-24,501
Closed -$146K – 12678
2020
Q4 		$146K Buy
24,501
+4,374
+22% +$28.7K ﹤0.01% 10268
2020
Q3 		$142K Buy
+20,127
New +$138K ﹤0.01% 9718
2018
Q1 		– Sell
-10,727
Closed -$39K – 9964
2017
Q4 		$39K Buy
+10,727
New +$40.7K ﹤0.01% 8972
2013
Q4 		– Sell
-2,727
Closed -$10K – 9216
2013
Q3 		$10K Sell
2,727
-619
-18% -$1.56K ﹤0.01% 8332
2013
Q2 		$6K Buy
+3,346
New +$11.7K ﹤0.01% 8101

Other funds holding PESI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
MCO
MAK Capital One New York $714M AUM 68.07% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1.16B AUM 53.61% 1-Year Est. Return
Diamond Hill Capital Management
Diamond Hill Capital Management Columbus, Ohio $12.5B AUM 7.49% 1-Year Est. Return
KCM
Kennedy Capital Management St Louis, Missouri $5.65B AUM 61.31% 1-Year Est. Return
PCM
Potomac Capital Management New York $147M AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
HA
Heartland Advisors Milwaukee, Wisconsin $2.25B AUM 44.61% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Jeff Yass's PESI Position: Q2 2026 in Review

Jeff Yass increased its Perma-Fix Environmental Services (PESI) stake by 1,314% in Q2 2026, buying an estimated $1.63M and bringing the position to 156,934 shares worth $2.24M. The position accounts for ﹤0.01% of the portfolio, ranked #6224.

Jeff Yass first reported a position in PESI in Q2 2013 and has held it in 22 quarters since. 88 funds tracked by Wall St. Rank hold PESI as of Q2 2026.

  • Jeff Yass held 156,934 shares of Perma-Fix Environmental Services worth $2.24M as of Q2 2026.
  • Jeff Yass bought 145,836 Perma-Fix Environmental Services shares in Q2 2026, an estimated $1.63M.
  • Perma-Fix Environmental Services made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #6224 holding.
  • Jeff Yass first reported a position in Perma-Fix Environmental Services in Q2 2013 and has held it in 22 quarters since.
  • 88 funds tracked by Wall St. Rank held Perma-Fix Environmental Services as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.