GROUP ONE TRADING LLC

Position in AP — Ampco Pittsburgh Corp

CIK 932540 CHICAGO, IL

Position in AP

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

Position Value

$60,593

+$15,825 QoQ

Shares Held

7,005

+5.1% QoQ

Ownership

0.034%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#61

of 84 holders

Holding Since

Mar 2023

6 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. AP ranks #1 (42.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AP	Ampco Pittsburgh Corp This page	7,005	$60,593
2	IIIN	Insteel Industries Inc	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

6 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$60,593	7,005	+5.1%	Shares	Sole	2026-08-14
2026-03-31	$44,768	6,662	-35.2%	Shares	Sole	2026-05-13
2025-12-31	$54,792	10,280	+5040.0%	Shares	Sole	2026-02-12
2025-09-30	$458	200	-98.6%	Shares	Sole	2025-11-12
2025-06-30	$42,615	14,397	+452.5%	Shares	Sole	2025-08-14
2023-03-31	$6,384	2,606	—	Shares	Sole	2023-05-12
No filing history on record for this holder in this stock.