Group One Trading
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Group One Trading’s Perma-Fix Environmental Services PESI Stock Holding History

Group One Trading’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
Q1 		$2.65M Buy
247,674
+243,647
+6,050% +$3.35M 0.01% 1827
2025
Q4 		$50.7K Buy
4,027
+501
+14% +$6.38K ﹤0.01% 5594
2025
Q3 		$35.6K Buy
3,526
+783
+29% +$8.65K ﹤0.01% 6231
2025
Q2 		$28.9K Buy
2,743
+2,022
+280% +$18.6K ﹤0.01% 6021
2025
Q1 		$5.24K Buy
+721
New +$6.48K ﹤0.01% 6618
2024
Q4 		– Sell
-3,824
Closed -$50.3K – 7800
2024
Q3 		$46.9K Hold
3,824
– – ﹤0.01% 4698
2024
Q2 		$38.7K Buy
+3,824
New +$42.4K ﹤0.01% 4721
2023
Q4 		– Sell
-16,604
Closed -$140K – 7994
2023
Q3 		$174K Buy
16,604
+9,178
+124% +$101K ﹤0.01% 3922
2023
Q2 		$81.5K Sell
7,426
-13,064
-64% -$136K ﹤0.01% 4819
2023
Q1 		$241K Buy
+20,490
New +$133K ﹤0.01% 3492

Other funds holding PESI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
MCO
MAK Capital One New York $679M AUM 29.02% 1-Year Est. Return
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1B AUM 51.95% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
HA
Heartland Advisors Milwaukee, Wisconsin $1.96B AUM 28.26% 1-Year Est. Return
Diamond Hill Capital Management
Diamond Hill Capital Management Columbus, Ohio $16B AUM 4.15% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
PCM
Potomac Capital Management New York $115M AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Group One Trading's PESI Position: Q1 2026 in Review

Group One Trading increased its Perma-Fix Environmental Services (PESI) stake by 6,050% in Q1 2026, buying an estimated $3.35M and bringing the position to 247,674 shares worth $2.65M. The position accounts for 0.01% of the portfolio, ranked #1827.

Group One Trading first reported a position in PESI in Q1 2023 and has held it in 10 quarters since. 85 funds tracked by Wall St. Rank hold PESI as of Q1 2026.

  • Group One Trading held 247,674 shares of Perma-Fix Environmental Services worth $2.65M as of Q1 2026.
  • Group One Trading bought 243,647 Perma-Fix Environmental Services shares in Q1 2026, an estimated $3.35M.
  • Perma-Fix Environmental Services made up 0.01% of Group One Trading's portfolio in Q1 2026, its #1827 holding.
  • Group One Trading first reported a position in Perma-Fix Environmental Services in Q1 2023 and has held it in 10 quarters since.
  • 85 funds tracked by Wall St. Rank held Perma-Fix Environmental Services as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.