<SEC-DOCUMENT>0001140361-23-047400-index.html : 20231006
<SEC-HEADER>0001140361-23-047400.hdr.sgml : 20231006
<ACCEPTANCE-DATETIME>20231006161518
ACCESSION NUMBER:		0001140361-23-047400
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20231006
DATE AS OF CHANGE:		20231006
GROUP MEMBERS:		DAVID C. OTT
GROUP MEMBERS:		O. ANDREAS HALVORSEN
GROUP MEMBERS:		ROSE S. SHABET
GROUP MEMBERS:		VIKING GLOBAL EQUITIES II LP
GROUP MEMBERS:		VIKING GLOBAL EQUITIES MASTER LTD.
GROUP MEMBERS:		VIKING GLOBAL OPPORTUNITIES GP LLC
GROUP MEMBERS:		VIKING GLOBAL OPPORTUNITIES LIQUID PORTFOLIO SUB-MASTER LP
GROUP MEMBERS:		VIKING GLOBAL OPPORTUNITIES PARENT GP LLC
GROUP MEMBERS:		VIKING GLOBAL OPPORTUNITIES PORTFOLIO GP LLC
GROUP MEMBERS:		VIKING GLOBAL PERFORMANCE LLC
GROUP MEMBERS:		VIKING LONG FUND GP LLC
GROUP MEMBERS:		VIKING LONG FUND MASTER LTD.

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Five9, Inc.
		CENTRAL INDEX KEY:			0001288847
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
		IRS NUMBER:				943394123
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88630
		FILM NUMBER:		231314390

	BUSINESS ADDRESS:	
		STREET 1:		3001 BISHOP DRIVE
		STREET 2:		SUITE 350
		CITY:			SAN RAMON
		STATE:			CA
		ZIP:			94583
		BUSINESS PHONE:		9252012000

	MAIL ADDRESS:	
		STREET 1:		3001 BISHOP DRIVE
		STREET 2:		SUITE 350
		CITY:			SAN RAMON
		STATE:			CA
		ZIP:			94583

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Five 9 Inc
		DATE OF NAME CHANGE:	20040428

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VIKING GLOBAL INVESTORS LP
		CENTRAL INDEX KEY:			0001103804
		IRS NUMBER:				134055118
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		600 WASHINGTON BLVD.
		STREET 2:		FLOOR 11
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			06901
		BUSINESS PHONE:		212-672-7050

	MAIL ADDRESS:	
		STREET 1:		600 WASHINGTON BLVD.
		STREET 2:		FLOOR 11
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			06901
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>ef20012111_sc13g.htm
<DESCRIPTION>SC 13G
<TEXT>
Document 1 - file: ef20012111_sc13g.htm

</DOCUMENT>
</SEC-DOCUMENT>