SIMPLEX TRADING, LLC

Position in JHX — James Hardie Industries plc

CIK 1488542 CHICAGO, IL

Position in JHX

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

Position Value

$380,212

-$66,109 QoQ

Shares Held

14,523

-38.4% QoQ

Ownership

0.003%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#199

of 339 holders

Holding Since

Dec 2025

3 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $2,389,068 across 6 Building Materials names. JHX ranks #3 (15.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMRZ	Amrize Ltd	19,267	$1,026,931
2	MLM	Martin Marietta Materials Inc	1,606	$926,180
3	JHX	James Hardie Industries plc This page	14,523	$380,212
4	EXP	Eagle Materials Inc	190	$42,750
5	TTAM	Titan America SA	692	$12,912
6	KNF	Knife River Corp	1	$83

3 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$380,212	14,523	-38.4%	Shares	Sole	2026-08-12
2026-03-31	$446,321	23,565	+105.2%	Shares	Sole	2026-05-14
2025-12-31	$238,293	11,484	—	Shares	Sole	2026-02-11
No filing history on record for this holder in this stock.