Private company

GROUP ONE TRADING LLC

Limited liability company registered in the United States, active since 2024. Summary from the record

Last updated Oct 21, 2026.

Overview

HeadquartersChicago, United States²
Legal formLimited Liability Company²
LEI5493001EUWZFKXMCEW19²
StatusActive²
LEI statusIssued and current²
Registered addressC/O THE CORPORATION TRUST COMPANY, 19801 Wilmington, United States²
Registered withDivision of Corporations, Department of State, 5151758²

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Corporate structure

GROUP ONE TRADING LLC is part of a group headed by GROUP ONE HOLDINGS LLC. 11 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

GROUP ONE HOLDINGS LLC Chicago, Illinois, United States
- GROUP ONE TRADING LLC Chicago, Illinois, United States
  - BRC Group Holdings, Inc Stake · Los Angeles, California
  - Cato Corporation Stake · Charlotte, North Carolina, United States
  - IRulya Therapeutics Inc. Stake · New Haven, Connecticut
  - OLENOX INDUSTRIES INC. Stake · Conroe, Texas
  - POET Technologies Stake · Storrs-Mansfield
  - Silvergate Capital Corp Stake · La Jolla, California
  - Strategy Stake · Tysons Corner, Virginia, United States
- DYNAMEX TRADING, LLC Subsidiary · New York, New York, United States
- GROUP ONE FUTURES TRADING, LLC Subsidiary · Chicago, Illinois, United States

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); stakes of 5% or more it reported on Schedules 13D and 13G (7 companies). Each entity in the chart links to its source.

Subsidiaries and ownership

Parent company (GLEIF)

GROUP ONE HOLDINGS LLC²

Ownership links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); each one cites its LEI record.

Timeline

Oct 1, 2024Parent Directly consolidated by GROUP ONE HOLDINGS LLC²
Oct 1, 2024Founded GROUP ONE TRADING LLC is founded²

Filings

33 filings to the SEC since October 2021: 33 other. The latest 20:

Aug 14, 2026N-PX EDGAR
Aug 14, 202613F-HR EDGAR
May 13, 202613F-HR EDGAR
Feb 12, 202613F-HR EDGAR
Nov 21, 2025X-17A-5 EDGAR
Nov 12, 202513F-HR EDGAR
Aug 14, 2025N-PX EDGAR
Aug 14, 202513F-HR EDGAR
May 14, 202513F-HR/A EDGAR
May 14, 202513F-HR EDGAR
Feb 14, 202513F-HR EDGAR
Nov 27, 2024X-17A-5 AUTO-GENERATED PAPER DOCUMENT EDGAR
Nov 27, 2024FOCUSN AUTO-GENERATED PAPER DOCUMENT EDGAR
Nov 14, 202413F-HR EDGAR
Aug 14, 2024N-PX EDGAR
Aug 14, 202413F-HR EDGAR
May 10, 202413F-HR EDGAR
Feb 14, 202413F-HR EDGAR
Nov 27, 2023FOCUSN AUTO-GENERATED PAPER DOCUMENT EDGAR
Nov 27, 2023X-17A-5 AUTO-GENERATED PAPER DOCUMENT EDGAR

The 33 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Stakes it holds

GROUP ONE TRADING LLC has told the SEC it owns more than 5% of 7 companies, latest first (Schedules 13D and 13G).

Cato CorporationSCHEDULE 13G/A Aug 13, 2026 to Sep 8, 2026³
POET TechnologiesSCHEDULE 13G/A Aug 13, 2026 to Sep 8, 2026⁴
IRulya Therapeutics Inc.SCHEDULE 13G Mar 5, 2026⁵
BRC Group Holdings, IncSCHEDULE 13G Nov 14, 2024 to May 14, 2025⁶
OLENOX INDUSTRIES INC.SC 13G/A Jun 3, 2022 to May 12, 2023⁷
Silvergate Capital CorpSC 13G/A Feb 13, 2023 to Mar 6, 2023⁸
StrategySC 13G/A Jan 10, 2023 to Feb 10, 2023⁹

Sources

The numbers on this page point here. Each one links to the record it came from.

1
SEC EDGARGROUP ONE TRADING LLC filings on SEC EDGAR
2
GLEIFGROUP ONE TRADING LLC LEI record (5493001EUWZFKXMCEW19)
3
SEC EDGARGROUP ONE TRADING LLC SCHEDULE 13G/A on Cato Corporation
4
SEC EDGARGROUP ONE TRADING LLC SCHEDULE 13G/A on POET Technologies
5
SEC EDGARGROUP ONE TRADING LLC SCHEDULE 13G on IRulya Therapeutics Inc.
6
SEC EDGARGROUP ONE TRADING LLC SCHEDULE 13G on BRC Group Holdings, Inc
7
SEC EDGARGROUP ONE TRADING LLC SC 13G/A on OLENOX INDUSTRIES INC.
8
SEC EDGARGROUP ONE TRADING LLC SC 13G/A on Silvergate Capital Corp
9
SEC EDGARGROUP ONE TRADING LLC SC 13G/A on Strategy