<SEC-DOCUMENT>0001381197-18-000036-index.html : 20180731 <SEC-HEADER>0001381197-18-000036.hdr.sgml : 20180731 <ACCEPTANCE-DATETIME>20180731165635 ACCESSION NUMBER: 0001381197-18-000036 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180727 ITEM INFORMATION: Other Events FILED AS OF DATE: 20180731 DATE AS OF CHANGE: 20180731 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Interactive Brokers Group, Inc. CENTRAL INDEX KEY: 0001381197 STANDARD INDUSTRIAL CLASSIFICATION: SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-33440 FILM NUMBER: 18981822 BUSINESS ADDRESS: STREET 1: ONE PICKWICK PLAZA CITY: GREENWICH STATE: CT ZIP: 06830 BUSINESS PHONE: 203-618-5800 MAIL ADDRESS: STREET 1: ONE PICKWICK PLAZA CITY: GREENWICH STATE: CT ZIP: 06830 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>ibkr-20180727x8k.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: ibkr-20180727x8k.htm
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