<SEC-DOCUMENT>0001047469-17-003764-index.html : 20170601
<SEC-HEADER>0001047469-17-003764.hdr.sgml : 20170601
<ACCEPTANCE-DATETIME>20170601164554
ACCESSION NUMBER:		0001047469-17-003764
CONFORMED SUBMISSION TYPE:	DEFM14A
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20170601
DATE AS OF CHANGE:		20170601
EFFECTIVENESS DATE:		20170601

FILER:

	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

	FILING VALUES:
		FORM TYPE:		DEFM14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-54991
		FILM NUMBER:		17885307

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFM14A
<SEQUENCE>1
<FILENAME>a2232256zdefm14a.htm
<DESCRIPTION>DEFM14A
<TEXT>
Document 1 - file: a2232256zdefm14a.htm

</DOCUMENT>
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<SEQUENCE>2
<FILENAME>g648825.jpg
<DESCRIPTION>G648825.JPG
<TEXT>
Document 2 - file: g648825.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g991014.jpg
<DESCRIPTION>G991014.JPG
<TEXT>
Document 3 - file: g991014.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g167329.jpg
<DESCRIPTION>G167329.JPG
<TEXT>
Document 4 - file: g167329.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g554695.jpg
<DESCRIPTION>G554695.JPG
<TEXT>
Document 5 - file: g554695.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g127432bgi001.gif
<DESCRIPTION>G127432BGI001.GIF
<TEXT>
Document 6 - file: g127432bgi001.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g127432bgi002.gif
<DESCRIPTION>G127432BGI002.GIF
<TEXT>
Document 7 - file: g127432bgi002.gif

</DOCUMENT>
</SEC-DOCUMENT>