<SEC-DOCUMENT>0001546927-16-000392-index.html : 20160212
<SEC-HEADER>0001546927-16-000392.hdr.sgml : 20160212
<ACCEPTANCE-DATETIME>20160212115432
ACCESSION NUMBER:		0001546927-16-000392
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20160212
DATE AS OF CHANGE:		20160212

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASIMO CORP
		CENTRAL INDEX KEY:			0000937556
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		IRS NUMBER:				330368882
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-83497
		FILM NUMBER:		161416531

	BUSINESS ADDRESS:	
		STREET 1:		52 DISCOVERY
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618
		BUSINESS PHONE:		949-297-7000

	MAIL ADDRESS:	
		STREET 1:		52 DISCOVERY
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Camber Capital Management LLC
		CENTRAL INDEX KEY:			0001444043
		IRS NUMBER:				421693587
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		101 HUNTINGTON AVENUE
		STREET 2:		SUITE 2550
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		617-717-6600

	MAIL ADDRESS:	
		STREET 1:		101 HUNTINGTON AVENUE
		STREET 2:		SUITE 2550
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>rmasimoncorp201513gv2.htm
<TEXT>
Document 1 - file: rmasimoncorp201513gv2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1
<SEQUENCE>2
<FILENAME>cambermasimocorp2015exh1v1.htm
<DESCRIPTION>JOINT FILING AGREEMENT
<TEXT>
Document 2 - file: cambermasimocorp2015exh1v1.htm

</DOCUMENT>
</SEC-DOCUMENT>