SIMPLEX TRADING, LLC

Position in SID — National Steel Co

CIK 1488542 CHICAGO, IL

Position in SID

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$55,320

-$321,573 QoQ

Shares Held

44,613

-82.2% QoQ

Ownership

0.003%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

14 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $1,426,014 across 6 Steel names.

#	Ticker	Company	Shares	Value (USD)
1	ASTL	Algoma Steel Group Inc.	125,725	$509,186
2	NWPX	NWPX Infrastructure, Inc.	2,572	$385,645
3	RS	Reliance, Inc.	846	$316,065
4	TX	Ternium S.A.	4,671	$199,451
5	MTUS	Metallus Inc.	619	$11,569
6	MSB	Mesabi Trust	162	$4,098

14 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$55,320	44,613	-82.2%	Shares	Sole	2026-05-14
2025-09-30	$376,893	251,262	+0.8%	Shares	Sole	2025-11-12
2025-06-30	$349,111	249,365	-16.5%	Shares	Sole	2025-08-05
2025-03-31	$498,780	298,671	+375.5%	Shares	Sole	2025-05-12
2024-12-31	$90,444	62,809	+13.1%	Shares	Sole	2025-02-11
2023-12-31	$218,276	55,541	-67.2%	Shares	Sole	2024-02-02
2023-09-30	$404,318	169,171	+303.8%	Shares	Sole	2023-11-01
2022-12-31	$115,632	41,896	-77.3%	Shares	Sole	2023-02-02
2022-09-30	$439,973	184,863	+302.0%	Shares	Sole	2022-11-04
2022-03-31	$249,254	45,988	-50.1%	Shares	Sole	2022-05-02
2021-12-31	$408,839	92,081	+4404.9%	Shares	Sole	2022-02-23
2021-03-31	$13,694	2,044	-92.0%	Shares	Sole	2021-04-26
2020-12-31	$151,742	25,503	+484.4%	Shares	Sole	2021-02-02
2020-06-30	$8,553	4,364	—	Shares	Sole	2020-07-13
No filing history on record for this holder in this stock.