SIMPLEX TRADING, LLC

Position in WSO — Watsco Inc

CIK 1488542 CHICAGO, IL

Position in WSO

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

Position Value

$2,500

-$12,779 QoQ

Shares Held

-85.7% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#743

of 782 holders

Holding Since

Mar 2020

13 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $7,107,398 across 9 Industrial Distribution names. WSO ranks #9 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	GWW	W.W. Grainger, Inc.	3,641	$4,953,216
2	POOL	Pool Corp	3,187	$684,886
3	MSM	Msc Industrial Direct Co Inc	4,406	$524,093
4	FAST	Fastenal Co	9,171	$440,483
5	AIT	Applied Industrial Technologies Inc	784	$265,109
6	DSGR	Distribution Solutions Group, Inc.	5,866	$160,435
7	TITN	Titan Machinery Inc.	3,313	$69,970
8	CNM	Core & Main, Inc.	139	$6,706

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,500	6	-85.7%	Shares	Sole	2026-08-12
2026-03-31	$15,279	42	-94.6%	Shares	Sole	2026-05-14
2025-12-31	$259,788	771	+1506.2%	Shares	Sole	2026-02-11
2025-09-30	$19,406	48	-86.6%	Shares	Sole	2025-11-12
2023-09-30	$135,601	359	-83.2%	Shares	Sole	2023-11-01
2022-09-30	$551,221	2,141	-1.3%	Shares	Sole	2022-11-04
2022-03-31	$660,764	2,169	+72.3%	Shares	Sole	2022-05-02
2021-12-31	$393,915	1,259	+78.1%	Shares	Sole	2022-02-23
2021-09-30	$187,086	707	0.0%	Shares	Sole	2021-10-28
2021-06-30	$202,654	707	+315.9%	Shares	Sole	2021-08-12
2021-03-31	$44,327	170	-94.5%	Shares	Sole	2021-04-26
2020-06-30	$551,936	3,106	+172.2%	Shares	Sole	2020-07-13
2020-03-31	$180,312	1,141	—	Shares	Sole	2020-04-29
No filing history on record for this holder in this stock.