GROUP ONE TRADING LLC

Position in MLM — Martin Marietta Materials Inc

CIK 932540 CHICAGO, IL

Position in MLM

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

Position Value

$1,035,176

+$866,261 QoQ

Shares Held

1,795

+569.8% QoQ

Ownership

0.003%

of shares outstanding

% of Portfolio

0.04%

of 13F equity value

Holder Rank

#500

of 1,068 holders

Holding Since

Jun 2020

15 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. MLM ranks #1 (50.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MLM	Martin Marietta Materials Inc This page	1,795	$1,035,176
2	CX	Cemex Sab De CV	33,740	$404,880
3	AMRZ	Amrize Ltd	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

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,035,176	1,795	+569.8%	Shares	Sole	2026-08-14
2025-09-30	$168,915	268	-27.2%	Shares	Sole	2025-11-12
2025-06-30	$202,017	368	+16.8%	Shares	Sole	2025-08-14
2025-03-31	$150,610	315	+270.6%	Shares	Sole	2025-05-14
2024-06-30	$46,053	85	0.0%	Shares	Sole	2024-08-14
2024-03-31	$52,184	85	-83.0%	Shares	Sole	2024-05-10
2022-12-31	$168,647	499	-96.6%	Shares	Sole	2023-02-09
2022-09-30	$4,771,119	14,813	-8.2%	Shares	Sole	2022-11-09
2022-06-30	$4,830,032	16,141	-14.5%	Shares	Sole	2022-08-11
2022-03-31	$7,262,104	18,868	+96.7%	Shares	Sole	2022-05-12
2021-12-31	$4,225,467	9,592	+72.6%	Shares	Sole	2022-02-11
2021-09-30	$1,898,715	5,557	+93.9%	Shares	Sole	2021-11-12
2021-06-30	$1,008,287	2,866	-36.7%	Shares	Sole	2021-08-10
2020-12-31	$1,286,668	4,531	+60.0%	Shares	Sole	2021-02-10
2020-06-30	$584,799	2,831	—	Shares	Sole	2020-08-13
No filing history on record for this holder in this stock.