SIMPLEX TRADING, LLC

Position in PKX — Posco Holdings Inc.

CIK 1488542 CHICAGO, IL

Position in PKX

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

Position Value

$35,561

-$42,879 QoQ

Shares Held

608

-61.9% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

13 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Mar 31, 2026

SIMPLEX TRADING, LLC holds $1,369,956 across 9 Steel names. PKX ranks #7 (2.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ASTL	Algoma Steel Group Inc.	154,905	$639,757
2	RS	Reliance, Inc.	819	$248,910
3	TX	Ternium S.A.	4,790	$192,318
4	MSB	Mesabi Trust	2,483	$78,214
5	MTUS	Metallus Inc.	4,169	$68,121
6	SID	National Steel Co	44,613	$55,320
7	PKX	Posco Holdings Inc. This page	608	$35,561
8	GGB	Gerdau S.A.	9,302	$33,580

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$35,561	608	-61.9%	Shares	Sole	2026-05-14
2025-09-30	$78,440	1,594	+1651.6%	Shares	Sole	2025-11-12
2024-12-31	$3,945	91	-93.0%	Shares	Sole	2025-02-11
2023-12-31	$123,833	1,302	+917.2%	Shares	Sole	2024-02-02
2022-12-31	$6,972	128	+652.9%	Shares	Sole	2023-02-02
2022-09-30	$622	17	0.0%	Shares	Sole	2022-11-04
2022-06-30	$756	17	-98.8%	Shares	Sole	2022-08-03
2022-03-31	$83,629	1,411	+237.6%	Shares	Sole	2022-05-02
2021-12-31	$24,365	418	-4.6%	Shares	Sole	2022-02-23
2021-09-30	$30,208	438	0.0%	Shares	Sole	2021-10-28
2021-06-30	$33,625	438	-28.0%	Shares	Sole	2021-08-12
2020-12-31	$37,884	608	+433.3%	Shares	Sole	2021-02-02
2020-03-31	$3,722	114	—	Shares	Sole	2020-04-29
No filing history on record for this holder in this stock.