GROUP ONE TRADING LLC

Position in AMRZ — Amrize Ltd

CIK 932540 CHICAGO, IL

Position in AMRZ

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$345,970

-$164,092 QoQ

Shares Held

6,491

-28.7% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#335

of 460 holders

Holding Since

Sep 2025

4 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $2,053,340 across 6 Building Materials names. AMRZ ranks #3 (16.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MLM	Martin Marietta Materials Inc	1,795	$1,035,176
2	CX	Cemex Sab De CV	33,740	$404,880
3	AMRZ	Amrize Ltd This page	6,491	$345,970
4	EXP	Eagle Materials Inc	819	$184,275
5	VMC	Vulcan Materials CO	279	$82,307
6	USLM	United States Lime & Minerals Inc	7	$732

4 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$345,970	6,491	-28.7%	Shares	Sole	2026-08-14
2026-03-31	$510,062	9,105	+80.3%	Shares	Sole	2026-05-13
2025-12-31	$273,104	5,050	-75.7%	Shares	Sole	2026-02-12
2025-09-30	$1,007,143	20,753	—	Shares	Sole	2025-11-12
No filing history on record for this holder in this stock.