GROUP ONE TRADING, L.P. - Significant Ownership

Signature - Title
Chad Grosam - Chief Financial Officer
Location
Chicago, IL
Summary
This page shows a list of all the recent SCHEDULE 13D/G filings made by GROUP ONE TRADING, L.P..

Significant Ownership of GROUP ONE TRADING, L.P.

Schedules 13D/G Reported by GROUP ONE TRADING, L.P.:

* An asterisk sign (*) next to the price indicates that the price is likely invalid.