    <SEC-DOCUMENT>0000909108-17-000053-index.html : 20170428
    <SEC-HEADER>0000909108-17-000053.hdr.sgml : 20170428
    <ACCEPTANCE-DATETIME>20170428150031
    ACCESSION NUMBER:		0000909108-17-000053
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		7
    CONFORMED PERIOD OF REPORT:	20170428
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Submission of Matters to a Vote of Security Holders
    FILED AS OF DATE:		20170428
    DATE AS OF CHANGE:		20170428

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			DIAMOND HILL INVESTMENT GROUP INC
    		CENTRAL INDEX KEY:			0000909108
    		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
    		IRS NUMBER:				650190407
    		STATE OF INCORPORATION:			OH
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-24498
    		FILM NUMBER:		17794674

    	BUSINESS ADDRESS:
    		STREET 1:		325 JOHN H MCCONNELL BLVD
    		STREET 2:		SUITE 200
    		CITY:			COLUMBUS
    		STATE:			OH
    		ZIP:			43215
    		BUSINESS PHONE:		6142553333

    	MAIL ADDRESS:
    		STREET 1:		325 JOHN H MCCONNELL BLVD
    		STREET 2:		SUITE 200
    		CITY:			COLUMBUS
    		STATE:			OH
    		ZIP:			43215

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BANC STOCK GROUP INC
    		DATE OF NAME CHANGE:	19971016

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	HEARTLAND GROUP OF COMPANIES INC
    		DATE OF NAME CHANGE:	19940301

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	HEARTLAND FINANCIAL GROUP INC
    		DATE OF NAME CHANGE:	19930714
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>dhil-2017427x8xkxvoteresul.htm
    <DESCRIPTION>DIAMOND HILL INVESTMENT GROUP INC 8-K
    <TEXT>
    Document 1 - file: dhil-2017427x8xkxvoteresul.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>exhibit31-dhilarticlesofin.htm
    <DESCRIPTION>EXHIBIT 3.1 AMENDMENTS TO ARTICLES OF INCORPORATION
    <TEXT>
    Document 2 - file: exhibit31-dhilarticlesofin.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.2
    <SEQUENCE>3
    <FILENAME>exhibit32-dhilcodeofregula.htm
    <DESCRIPTION>EXHIBIT 3.2 AMENDED AND RESTATED CODE OF REGULATIONS
    <TEXT>
    Document 3 - file: exhibit32-dhilcodeofregula.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>articlesimagepage1.jpg
    <TEXT>
    Document 4 - file: articlesimagepage1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>articlesimagepage2.jpg
    <TEXT>
    Document 5 - file: articlesimagepage2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>articlesimagepage3.jpg
    <TEXT>
    Document 6 - file: articlesimagepage3.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>dhillogoa01a01a02a05.jpg
    <TEXT>
    Document 7 - file: dhillogoa01a01a02a05.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>