Trexquant Investment’s Perma-Fix Environmental Services PESI Stock Holding History

Trexquant Investment’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	$314K	Buy	+21,948	New	+$245K	﹤0.01%	1729
2025 Q4	–	Sell	-42,156	Closed	-$426K	–	1845
2025 Q3	$426K	Buy	+42,156	New	+$466K	﹤0.01%	1352
2024 Q1	–	Sell	-17,912	Closed	-$141K	–	1695
2023 Q4	$141K	Sell	17,912 -5,996	-25%	-$50.7K	﹤0.01%	1357
2023 Q3	$250K	Buy	+23,908	New	+$263K	0.01%	1283

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

Trexquant Investment's PESI Position: Q2 2026 in Review

Trexquant Investment opened a new position in Perma-Fix Environmental Services (PESI) in Q2 2026: 21,948 shares worth $314K. The stake represents ﹤0.01% of the portfolio and ranks #1729 among its holdings. This is a return to the name: Trexquant Investment previously reported a position in PESI as recently as Q3 2025.

Trexquant Investment first reported a position in PESI in Q3 2023 and has held it in 4 quarters since. The position peaked at $426K in Q3 2025. 88 funds tracked by Wall St. Rank hold PESI as of Q2 2026.

Trexquant Investment held 21,948 shares of Perma-Fix Environmental Services worth $314K as of Q2 2026.
Perma-Fix Environmental Services was a new Trexquant Investment position in Q2 2026.
Perma-Fix Environmental Services made up ﹤0.01% of Trexquant Investment's portfolio in Q2 2026, its #1729 holding.
Trexquant Investment first reported a position in Perma-Fix Environmental Services in Q3 2023 and has held it in 4 quarters since.
Trexquant Investment's Perma-Fix Environmental Services position peaked at $426K in Q3 2025.
88 funds tracked by Wall St. Rank held Perma-Fix Environmental Services as of Q2 2026.

Based on Trexquant Investment's 13F filing for Q2 2026, filed 14 Aug 2026.