<SEC-DOCUMENT>0000912938-21-000283-index.html : 20210512
<SEC-HEADER>0000912938-21-000283.hdr.sgml : 20210512
<ACCEPTANCE-DATETIME>20210512094452
ACCESSION NUMBER:		0000912938-21-000283
CONFORMED SUBMISSION TYPE:	13F-HR/A
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20201231
FILED AS OF DATE:		20210512
DATE AS OF CHANGE:		20210512
EFFECTIVENESS DATE:		20210512

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASSACHUSETTS FINANCIAL SERVICES CO /MA/
		CENTRAL INDEX KEY:			0000912938
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		13F-HR/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-04968
		FILM NUMBER:		21913776

	BUSINESS ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		18006372929

	MAIL ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
</SEC-HEADER>
<DOCUMENT>
<TYPE>13F-HR/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>INFORMATION TABLE
<SEQUENCE>2
<FILENAME>form13fInfoTable.xml
<DESCRIPTION>GENERATED FOR MASSACHUSETTS FINANCIAL SERVICES COMPANY AS OF 12-31-2020
<TEXT>
Document 2 - file: form13fInfoTable.html

Document 2 - RAW XML: form13fInfoTable.xml

</DOCUMENT>
</SEC-DOCUMENT>