<SEC-DOCUMENT>0001193125-17-089108-index.html : 20170320
<SEC-HEADER>0001193125-17-089108.hdr.sgml : 20170320
<ACCEPTANCE-DATETIME>20170320140432
ACCESSION NUMBER:		0001193125-17-089108
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170320
DATE AS OF CHANGE:		20170320

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Zayo Group Holdings, Inc.
		CENTRAL INDEX KEY:			0001608249
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
		IRS NUMBER:				261398293
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88645
		FILM NUMBER:		17701067

	BUSINESS ADDRESS:	
		STREET 1:		1805 29TH ST
		STREET 2:		SUITE 2050
		CITY:			BOULDER
		STATE:			CO
		ZIP:			80301
		BUSINESS PHONE:		303-381-4683

	MAIL ADDRESS:	
		STREET 1:		1805 29TH ST
		STREET 2:		SUITE 2050
		CITY:			BOULDER
		STATE:			CO
		ZIP:			80301

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DODGE & COX
		CENTRAL INDEX KEY:			0000200217
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		555 CALIFORNIA STREET
		STREET 2:		40TH FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94104
		BUSINESS PHONE:		4159811710

	MAIL ADDRESS:	
		STREET 1:		555 CALIFORNIA STREET
		STREET 2:		40TH FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94104
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>d347152dsc13ga.htm
<DESCRIPTION>SCHEDULE 13G AMENDMENT NO. 1
<TEXT>
Document 1 - file: d347152dsc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>