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

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-11-09</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001304623</issuerCik>
        <issuerName>ACA Capital Holdings Inc</issuerName>
        <issuerTradingSymbol>ACA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001335482</rptOwnerCik>
            <rptOwnerName>King David E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ACA CAPITAL HOLDINGS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>140 BROADWAY</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10005</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>The reporting person does not, directly or indirectly, beneficially own any securities of the issuer .  The filing of this report shall not be deemed an admission of beneficial ownership of any securities for purposes of Section 16 or for any other purpose.     Exhibit List:    Exhibit 24:    Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Stacey Tyson, Attorney-In-Fact</signatureName>
        <signatureDate>2006-11-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
