-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 TCExh11KP80wPETWSOemabpu9Rf87F/QtO7ZBPSNqbRieGMAUrZfgf4gFLQJ7WNt
 ywNiUQU/Es9e5EqJmesIpw==

<SEC-DOCUMENT>0001181431-10-007806.txt : 20100209
<SEC-HEADER>0001181431-10-007806.hdr.sgml : 20100209
<ACCEPTANCE-DATETIME>20100209172258
ACCESSION NUMBER:		0001181431-10-007806
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100204
FILED AS OF DATE:		20100209
DATE AS OF CHANGE:		20100209

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MANAGED FUTURES INDEX SERIES, a series of The Frontier Fund
		CENTRAL INDEX KEY:			0001389129
		IRS NUMBER:				386815533
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		C/0 EQUINOX FUND MANAGEMENT LLC
		STREET 2:		1660 LINCOLN ST., SUITE 100
		CITY:			DENVER
		STATE:			CO
		ZIP:			80264
		BUSINESS PHONE:		303-837-0600

	MAIL ADDRESS:	
		STREET 1:		C/0 EQUINOX FUND MANAGEMENT LLC
		STREET 2:		1660 LINCOLN ST., SUITE 100
		CITY:			DENVER
		STATE:			CO
		ZIP:			80264

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Equinox Fund Management LLC
		CENTRAL INDEX KEY:			0001325558
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-52461
		FILM NUMBER:		10585313

	BUSINESS ADDRESS:	
		STREET 1:		1660 LINCOLN STREET
		STREET 2:		SUITE 100
		CITY:			DENVER
		STATE:			CO
		ZIP:			80264
		BUSINESS PHONE:		303-837-0600

	MAIL ADDRESS:	
		STREET 1:		1660 LINCOLN STREET
		STREET 2:		SUITE 100
		CITY:			DENVER
		STATE:			CO
		ZIP:			80264
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd265516.xml
<DESCRIPTION>FORM 4: MANAGED FUTURE SERIES
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-02-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001389129</issuerCik>
        <issuerName>MANAGED FUTURES INDEX SERIES, a series of The Frontier Fund</issuerName>
        <issuerTradingSymbol>NONE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001325558</rptOwnerCik>
            <rptOwnerName>Equinox Fund Management LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1660 LINCOLN ST.</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>DENVER</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80264</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Managing Owner of Issuer</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Managed Futures-2</value>
            </securityTitle>
            <transactionDate>
                <value>2010-02-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>16176.1909</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>123.6385</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18313.5084</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <remarks>This Form 4 filing relates to the acquisition of Managed Futures Series-2 Units of The Frontier Fund.  Because The Frontier Fund and the Managed Futures Index Series are individual Securities and Exchange Commission registrants, separate Forms 4 are being filed on behalf of Equinox Fund Management, LLC relating to The Frontier Fund and to the Managed Futures Index Series, individually. This Form 4 relates to the acquisition of Units on February 4, 2010 described in each such Form 4.</remarks>

    <ownerSignature>
        <signatureName>/s/ Brent Bales, Chief Financial Officer</signatureName>
        <signatureDate>2010-02-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----