<SEC-DOCUMENT>0001381197-18-000049-index.html : 20180928
<SEC-HEADER>0001381197-18-000049.hdr.sgml : 20180928
<ACCEPTANCE-DATETIME>20180928160730
ACCESSION NUMBER:		0001381197-18-000049
CONFORMED SUBMISSION TYPE:	8-A12B
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180928
DATE AS OF CHANGE:		20180928

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-A12B
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33440
		FILM NUMBER:		181094237

	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-A12B
<SEQUENCE>1
<FILENAME>ibkr-8a_20180928.htm
<DESCRIPTION>8-A12B
<TEXT>
Document 1 - file: ibkr-8a_20180928.htm

</DOCUMENT>
</SEC-DOCUMENT>