<SEC-DOCUMENT>0000899243-17-001737-index.html : 20170123
<SEC-HEADER>0000899243-17-001737.hdr.sgml : 20170123
<ACCEPTANCE-DATETIME>20170123161245
ACCESSION NUMBER:		0000899243-17-001737
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170119
FILED AS OF DATE:		20170123
DATE AS OF CHANGE:		20170123

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KCG Holdings, Inc.
		CENTRAL INDEX KEY:			0001569391
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		300 VESEY STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10282
		BUSINESS PHONE:		646-682-6000

	MAIL ADDRESS:	
		STREET 1:		300 VESEY STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10282

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Knight Holdco, Inc.
		DATE OF NAME CHANGE:	20130211

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Alexopoulos Heather Tookes
		CENTRAL INDEX KEY:			0001694967

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-54991
		FILM NUMBER:		17541170

	MAIL ADDRESS:	
		STREET 1:		300 VESEY STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10282
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
Document 1 - file: doc4.html

Document 1 - RAW XML: doc4.xml

</DOCUMENT>
</SEC-DOCUMENT>