<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2002-03-21</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001157543</issuerCik>
        <issuerName>ADVANTAGE ADVISERS MULTI - SECTOR FUND I</issuerName>
        <issuerTradingSymbol>XAMSX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001269119</rptOwnerCik>
            <rptOwnerName>OPPENHEIMER ASSET MANAGEMENT INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 PARK AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10166</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See note 1</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5936.842</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See note 2</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <remarks>1.The Reporting Person is the direct corporate parent of the managing member of the Fund's investment adviser.  The Investment Advisory Agreement was dated March 21, 2002.

2. The Fund shares are held directly by the investment adviser and indirectly by the Reporting Person by virtue of its interest in the investment adviser.  The Reporting Person disclaims beneficial ownership of any Fund shares except as to those shares in which it may be deemed to have an indirect pecuniary interest pursuant to Rule 16a-1(a)(2).</remarks>

    <ownerSignature>
        <signatureName>/s/ Stephen Beach</signatureName>
        <signatureDate>2006-02-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
