<SEC-DOCUMENT>0001381197-16-000080-index.html : 20160803
<SEC-HEADER>0001381197-16-000080.hdr.sgml : 20160803
<ACCEPTANCE-DATETIME>20160802183304
ACCESSION NUMBER:		0001381197-16-000080
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20160803
DATE AS OF CHANGE:		20160802
GROUP MEMBERS:		THOMAS PETERFFY

SUBJECT COMPANY:	

	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:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-82876
		FILM NUMBER:		161801829

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IBG Holdings LLC
		CENTRAL INDEX KEY:			0001399812
		IRS NUMBER:				352296543
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		ONE PICKWICK PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		2036185800

	MAIL ADDRESS:	
		STREET 1:		ONE PICKWICK PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>ibgholdings-13d_a4.htm
<DESCRIPTION>SC 13 D/A
<TEXT>
Document 1 - file: ibgholdings-13d_a4.htm

</DOCUMENT>
</SEC-DOCUMENT>