SIMPLEX TRADING, LLC

Position in PESI — Perma Fix Environmental Services Inc

CIK 1488542 CHICAGO, IL

Position in PESI

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$452,035

+$117,246 QoQ

Shares Held

31,633

+1.0% QoQ

Ownership

0.149%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#35

of 89 holders

Holding Since

Mar 2020

13 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $2,351,458 across 6 Waste Management names. PESI ranks #2 (19.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	WCN	Waste Connections, Inc.	9,365	$1,561,051
2	PESI	Perma Fix Environmental Services Inc This page	31,633	$452,035
3	AREC	American Resources Corp	85,421	$183,655
4	ONT	Onterris, Inc.	6,963	$140,722
5	CWST	Casella Waste Systems Inc	132	$12,800
6	CLH	Clean Harbors Inc	4	$1,195

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$452,035	31,633	+1.0%	Shares	Sole	2026-08-12
2026-03-31	$334,789	31,318	+1016.9%	Shares	Sole	2026-05-14
2025-09-30	$28,320	2,804	-66.7%	Shares	Sole	2025-11-12
2025-03-31	$61,206	8,419	+76436.4%	Shares	Sole	2025-05-12
2024-09-30	$134	11	-99.8%	Shares	Sole	2024-11-08
2024-06-30	$63,626	6,281	+135.6%	Shares	Sole	2024-07-25
2024-03-31	$31,698	2,666	-72.2%	Shares	Sole	2024-04-25
2023-06-30	$105,111	9,573	-54.9%	Shares	Sole	2023-08-04
2023-03-31	$250,277	21,246	+22264.2%	Shares	Sole	2023-04-27
2021-03-31	$696	95	-93.4%	Shares	Sole	2021-04-26
2020-09-30	$10,187	1,445	-34.3%	Shares	Sole	2020-10-14
2020-06-30	$14,058	2,200	+509.4%	Shares	Sole	2020-07-13
2020-03-31	$1,880	361	—	Shares	Sole	2020-04-29
No filing history on record for this holder in this stock.