GROUP ONE TRADING LLC

Position in IIIN — Insteel Industries Inc

CIK 932540 CHICAGO, IL

Position in IIIN

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

Position Value

$36,904

+$32,804 QoQ

Shares Held

1,222

+901.6% QoQ

Ownership

0.006%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#129

of 187 holders

Holding Since

Mar 2026

2 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $144,033 across 6 Metal Fabrication names. IIIN ranks #2 (25.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AP	Ampco Pittsburgh Corp	7,005	$60,593
2	IIIN	Insteel Industries Inc This page	1,222	$36,904
3	CRS	Carpenter Technology Corp	47	$28,991
4	TG	Tredegar Corp	1,480	$11,780
5	GPGI	GPGI, Inc.	340	$5,389
6	WOR	Worthington Enterprises, Inc.	7	$376

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$36,904	1,222	+901.6%	Shares	Sole	2026-08-14
2026-03-31	$4,100	122	—	Shares	Sole	2026-05-13
No filing history on record for this holder in this stock.