<SEC-DOCUMENT>0000950142-16-004257-index.html : 20160809
<SEC-HEADER>0000950142-16-004257.hdr.sgml : 20160809
<ACCEPTANCE-DATETIME>20160809170347
ACCESSION NUMBER:		0000950142-16-004257
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20160805
FILED AS OF DATE:		20160809
DATE AS OF CHANGE:		20160809

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:		545 WASHINGTON BOULEVARD
		CITY:			JERSEY CITY
		STATE:			NJ
		ZIP:			07310
		BUSINESS PHONE:		201-222-9400

	MAIL ADDRESS:	
		STREET 1:		545 WASHINGTON BOULEVARD
		CITY:			JERSEY CITY
		STATE:			NJ
		ZIP:			07310

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GAPSTAR LLC
		CENTRAL INDEX KEY:			0001187382

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-54991
		FILM NUMBER:		161819070

	BUSINESS ADDRESS:	
		STREET 1:		55 EAST 52ND STREET, 32ND FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10055
		BUSINESS PHONE:		212 715 4000

	MAIL ADDRESS:	
		STREET 1:		55 EAST 52ND STREET, 32ND FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10055

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GAP Coinvestments CDA, L.P.
		CENTRAL INDEX KEY:			0001356474
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-54991
		FILM NUMBER:		161819071

	BUSINESS ADDRESS:	
		STREET 1:		55 EAST 52ND STREET, 32ND FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10055
		BUSINESS PHONE:		212 715 4000

	MAIL ADDRESS:	
		STREET 1:		55 EAST 52ND STREET, 32ND FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10055
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>es1600895_4-kcg2.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
Document 1 - file: es1600895_4-kcg2.html

Document 1 - RAW XML: es1600895_4-kcg2.xml

</DOCUMENT>
</SEC-DOCUMENT>