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 Q2	$1.75M	Sell	122,611 -125,063	-50%	-$1.39M	﹤0.01%	2351
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 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 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 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 Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Heartland Advisors Milwaukee, Wisconsin $2.25B AUM 44.61% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Group One Trading's PESI Position: Q2 2026 in Review

Group One Trading reduced its Perma-Fix Environmental Services (PESI) stake by 50% in Q2 2026, selling an estimated $1.39M and leaving 122,611 shares worth $1.75M. The position accounts for ﹤0.01% of the portfolio, ranked #2351.

Group One Trading first reported a position in PESI in Q1 2023 and has held it in 11 quarters since. The position peaked at $2.65M in Q1 2026. 89 funds tracked by Wall St. Rank hold PESI as of Q2 2026.

Group One Trading held 122,611 shares of Perma-Fix Environmental Services worth $1.75M as of Q2 2026.
Group One Trading sold 125,063 Perma-Fix Environmental Services shares in Q2 2026, an estimated $1.39M.
Perma-Fix Environmental Services made up ﹤0.01% of Group One Trading's portfolio in Q2 2026, its #2351 holding.
Group One Trading first reported a position in Perma-Fix Environmental Services in Q1 2023 and has held it in 11 quarters since.
Group One Trading's Perma-Fix Environmental Services position peaked at $2.65M in Q1 2026.
89 funds tracked by Wall St. Rank held Perma-Fix Environmental Services as of Q2 2026.

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