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

Simplex 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	$42.9K	Sell	3,000 -10,100	-77%	-$113K	﹤0.01%	6440
2026 Q1	$140K	Buy	+13,100	New	+$180K	﹤0.01%	4708
2025 Q4	–	Sell	-8,400	Closed	-$84K	–	9700
2025 Q3	$84K	Buy	8,400 +200	+2%	+$2.21K	﹤0.01%	5945
2025 Q2	$86K	Sell	8,200 -5,700	-41%	-$52.4K	﹤0.01%	5391
2025 Q1	$101K	Buy	13,900 +7,400	+114%	+$66.5K	﹤0.01%	5047
2024 Q4	$71K	Buy	+6,500	New	+$85.5K	﹤0.01%	5511
2023 Q2	–	Sell	-9,300	Closed	-$109K	–	9698
2023 Q1	$109K	Buy	+9,300	New	+$60.5K	﹤0.01%	5061
2020 Q2	–	Sell	-15	Closed	-$7K	–	8162
2020 Q1	$7K	Buy	+15	New	+$106	﹤0.01%	6681

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

Simplex Trading's PESI Position: Q2 2026 in Review

Simplex Trading increased its Perma-Fix Environmental Services (PESI) stake by 1% in Q2 2026, buying an estimated $3.51K and bringing the position to 31,633 shares worth $452K. The position accounts for ﹤0.01% of the portfolio, ranked #3732.

Simplex Trading first reported a position in PESI in Q1 2018 and has held it in 14 quarters since. 89 funds tracked by Wall St. Rank hold PESI as of Q2 2026.

Simplex Trading held 31,633 shares of Perma-Fix Environmental Services worth $452K as of Q2 2026.
Simplex Trading bought 315 Perma-Fix Environmental Services shares in Q2 2026, an estimated $3.51K.
Perma-Fix Environmental Services made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #3732 holding.
Simplex Trading first reported a position in Perma-Fix Environmental Services in Q1 2018 and has held it in 14 quarters since.
89 funds tracked by Wall St. Rank held Perma-Fix Environmental Services as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.