-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 WYni/Y+jK9O3HfPGCmcvwFczyxogyH62Is+D6dmFTjVePNPTkMIrVAz23VjNs4l4
 1BP6eaOqFGyUYbI+6IuNmA==

<SEC-DOCUMENT>0001385169-10-000004.txt : 20100105
<SEC-HEADER>0001385169-10-000004.hdr.sgml : 20100105
<ACCEPTANCE-DATETIME>20100105131449
ACCESSION NUMBER:		0001385169-10-000004
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100101
FILED AS OF DATE:		20100105
DATE AS OF CHANGE:		20100105

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hynes Jean M.
		CENTRAL INDEX KEY:			0001384984

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-04605
		FILM NUMBER:		10505497

	MAIL ADDRESS:	
		STREET 1:		WELLINGTON MANAGEMENT COMPANY, LLP
		STREET 2:		75 STATE STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIRST OPPORTUNITY FUND INC
		CENTRAL INDEX KEY:			0000790202
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				133341573
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		2344 SPRUCE STREET
		STREET 2:		SUITE A
		CITY:			BOULDER
		STATE:			CO
		ZIP:			80302
		BUSINESS PHONE:		3034445483

	MAIL ADDRESS:	
		STREET 1:		2344 SPRUCE STREET
		STREET 2:		SUITE A
		CITY:			BOULDER
		STATE:			CO
		ZIP:			80302

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST FINANCIAL FUND INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST SAVINGS & BANKING INSTITUTIONS FUND INC
		DATE OF NAME CHANGE:	19860402
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-01-01</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000790202</issuerCik>
        <issuerName>FIRST OPPORTUNITY FUND INC</issuerName>
        <issuerTradingSymbol>FF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001384984</rptOwnerCik>
            <rptOwnerName>Hynes Jean M.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>WELLINGTON MANAGEMENT COMPANY, LLP</rptOwnerStreet1>
            <rptOwnerStreet2>75 STATE STREET</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02109</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Officer of Investment Advisor</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>No longer a reporting person effective January 1, 2010.</remarks>

    <ownerSignature>
        <signatureName>/s/JOHN E. BRUNO - Attorney-in-fact</signatureName>
        <signatureDate>2010-01-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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