<SEC-DOCUMENT>0001381197-21-000031-index.html : 20210730
<SEC-HEADER>0001381197-21-000031.hdr.sgml : 20210730
<ACCEPTANCE-DATETIME>20210730162729
ACCESSION NUMBER:		0001381197-21-000031
CONFORMED SUBMISSION TYPE:	424B5
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20210730
DATE AS OF CHANGE:		20210730

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:				300390693
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-240121
		FILM NUMBER:		211132918

	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>424B5
<SEQUENCE>1
<FILENAME>ibkr-424b5_20210730.htm
<DESCRIPTION>IBKR PROSPECTUS SUPPLEMENT
<TEXT>
Document 1 - file: ibkr-424b5_20210730.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>diagram_ps.jpg
<TEXT>
Document 2 - file: diagram_ps.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>image0.jpg
<TEXT>
Document 3 - file: image0.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>image3.jpg
<TEXT>
Document 4 - file: image3.jpg

</DOCUMENT>
</SEC-DOCUMENT>