<SEC-DOCUMENT>0001097241-19-000003-index.html : 20190211
<SEC-HEADER>0001097241-19-000003.hdr.sgml : 20190211
<ACCEPTANCE-DATETIME>20190211085028
ACCESSION NUMBER:		0001097241-19-000003
CONFORMED SUBMISSION TYPE:	13F-HR
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20181231
FILED AS OF DATE:		20190211
DATE AS OF CHANGE:		20190211
EFFECTIVENESS DATE:		20190211

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STATE OF WISCONSIN INVESTMENT BOARD
		CENTRAL INDEX KEY:			0000854157
		IRS NUMBER:				396006423
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		13F-HR
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-02519
		FILM NUMBER:		19582140

	BUSINESS ADDRESS:	
		STREET 1:		121 EAST WILSON STREET
		CITY:			MADISON
		STATE:			WI
		ZIP:			53703
		BUSINESS PHONE:		6082662381

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 7842
		STREET 2:		121 EAST WILSON STREET
		CITY:			MADISON
		STATE:			WI
		ZIP:			53707
</SEC-HEADER>
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<TYPE>13F-HR
<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>swbf4q2018.xml
<TEXT>
Document 2 - file: swbf4q2018.html

Document 2 - RAW XML: swbf4q2018.xml

</DOCUMENT>
</SEC-DOCUMENT>