    <SEC-DOCUMENT>0001047469-18-001395-index.html : 20180308
    <SEC-HEADER>0001047469-18-001395.hdr.sgml : 20180308
    <ACCEPTANCE-DATETIME>20180308103946
    ACCESSION NUMBER:		0001047469-18-001395
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		6
    CONFORMED PERIOD OF REPORT:	20180419
    FILED AS OF DATE:		20180308
    DATE AS OF CHANGE:		20180308
    EFFECTIVENESS DATE:		20180308

    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:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-33440
    		FILM NUMBER:		18675432

    	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>DEF 14A
    <SEQUENCE>1
    <FILENAME>a2234777zdef14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: a2234777zdef14a.htm

    </DOCUMENT>
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    <SEQUENCE>2
    <FILENAME>g665745.jpg
    <DESCRIPTION>G665745.JPG
    <TEXT>
    Document 2 - file: g665745.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>g71518.jpg
    <DESCRIPTION>G71518.JPG
    <TEXT>
    Document 3 - file: g71518.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g776522.jpg
    <DESCRIPTION>G776522.JPG
    <TEXT>
    Document 4 - file: g776522.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g77212bai001.gif
    <DESCRIPTION>G77212BAI001.GIF
    <TEXT>
    Document 5 - file: g77212bai001.gif

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
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    <DESCRIPTION>G77212BAI002.GIF
    <TEXT>
    Document 6 - file: g77212bai002.gif

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    </SEC-DOCUMENT>