<SEC-DOCUMENT>0000892712-18-000218-index.html : 20180510
<SEC-HEADER>0000892712-18-000218.hdr.sgml : 20180510
<ACCEPTANCE-DATETIME>20180510122603
ACCESSION NUMBER:		0000892712-18-000218
CONFORMED SUBMISSION TYPE:	13F-HR
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180331
FILED AS OF DATE:		20180510
DATE AS OF CHANGE:		20180510
EFFECTIVENESS DATE:		20180510

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HEARTLAND ADVISORS INC
		CENTRAL INDEX KEY:			0000937394
		IRS NUMBER:				391078128
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		13F-HR
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-04131
		FILM NUMBER:		18821376

	BUSINESS ADDRESS:	
		STREET 1:		789 N WATER STREET
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
		BUSINESS PHONE:		414-347-7777

	MAIL ADDRESS:	
		STREET 1:		789 N WATER STREET
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
</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>aci_13f.xml
<DESCRIPTION>INFORMATION TABLE
<TEXT>
Document 2 - file: aci_13f.html

Document 2 - RAW XML: aci_13f.xml

</DOCUMENT>
</SEC-DOCUMENT>