GROUP ONE TRADING LLC

Position in EFX — Equifax Inc

CIK 932540 CHICAGO, IL

Position in EFX

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

Position Value

$140,943

+$61,172 QoQ

Shares Held

888

+100.5% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#637

of 830 holders

Holding Since

Mar 2021

9 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $627,427 across 5 Consulting Services names. EFX ranks #2 (22.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	BAH	Booz Allen Hamilton Holding Corp	5,302	$321,672
2	EFX	Equifax Inc This page	888	$140,943
3	VRSK	Verisk Analytics, Inc.	674	$121,003
4	RGP	Resources Connection, Inc.	9,713	$41,280
5	DGNX	Diginex Ltd	1,709	$2,529

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$140,943	888	+100.5%	Shares	Sole	2026-08-14
2026-03-31	$79,771	443	+86.9%	Shares	Sole	2026-05-13
2025-12-31	$51,424	237	-64.1%	Shares	Sole	2026-02-12
2025-09-30	$169,309	660	+16.2%	Shares	Sole	2025-11-12
2025-06-30	$147,322	568	+18833.3%	Shares	Sole	2025-08-14
2024-03-31	$802	3	+200.0%	Shares	Sole	2024-05-10
2023-03-31	$202	1	-100.0%	Shares	Sole	2023-05-12
2022-12-31	$389,108	2,002	+442.5%	Shares	Sole	2023-02-09
2021-03-31	$66,836	369	—	Shares	Sole	2021-05-12
No filing history on record for this holder in this stock.