SIMPLEX TRADING, LLC

Position in MAS — Masco Corp /De/

CIK 1488542 CHICAGO, IL

Position in MAS

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

Position Value

$304,747

-$12,172 QoQ

Shares Held

5,048

+1.1% QoQ

Ownership

0.003%

of shares outstanding

% of Portfolio

0.01%

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%

Industrials · as of Mar 31, 2026

SIMPLEX TRADING, LLC holds $5,250,058 across 18 Building Products & Equipment names. MAS ranks #5 (5.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	BLDR	Builders FirstSource, Inc.	19,773	$1,627,911
2	OC	Owens Corning	12,601	$1,363,680
3	TREX	Trex Co Inc	25,372	$924,048
4	FBIN	Fortune Brands Innovations, Inc.	19,161	$746,704
5	MAS	Masco Corp /De/ This page	5,048	$304,747
6	LMB	Limbach Holdings, Inc.	830	$64,781
7	AAON	Aaon, Inc.	607	$50,229
8	SPXC	SPX Technologies, Inc.	241	$48,185

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$304,747	5,048	+1.1%	Shares	Sole	2026-05-14
2025-12-31	$316,919	4,994	-51.0%	Shares	Sole	2026-02-11
2024-03-31	$804,181	10,195	-45.6%	Shares	Sole	2024-04-25
2023-12-31	$1,256,142	18,754	-32.5%	Shares	Sole	2024-02-02
2022-12-31	$1,295,792	27,765	+28.9%	Shares	Sole	2023-02-02
2022-09-30	$1,006,076	21,548	+1093.8%	Shares	Sole	2022-11-04
2022-03-31	$92,055	1,805	-90.8%	Shares	Sole	2022-05-02
2021-12-31	$1,378,278	19,628	+20.6%	Shares	Sole	2022-02-23
2021-09-30	$904,354	16,280	+0.7%	Shares	Sole	2021-10-28
2021-06-30	$952,044	16,161	-35.0%	Shares	Sole	2021-08-12
2020-12-31	$1,364,790	24,846	+70.8%	Shares	Sole	2021-02-02
2020-09-30	$801,755	14,543	+14443.0%	Shares	Sole	2020-10-14
2020-03-31	$3,457	100	—	Shares	Sole	2020-04-29
No filing history on record for this holder in this stock.