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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2020-07-01</periodOfReport>

    <dateOfOriginalSubmission>2020-07-01</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001799208</issuerCik>
        <issuerName>Dun &amp; Bradstreet Holdings, Inc.</issuerName>
        <issuerTradingSymbol>DNB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001704720</rptOwnerCik>
            <rptOwnerName>Cannae Holdings, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1701 VILLAGE CENTER CIRCLE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LAS VEGAS</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>89134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isTenPercentOwner>true</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001546148</rptOwnerCik>
            <rptOwnerName>Cannae Holdings, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CANNAE HOLDINGS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1701 VILLAGE CENTER CIRCLE</rptOwnerStreet2>
            <rptOwnerCity>LAS VEGAS</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>89134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isTenPercentOwner>true</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001816417</rptOwnerCik>
            <rptOwnerName>DNB Holdco, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CANNAE HOLDINGS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1701 VILLAGE CENTER CIRCLE</rptOwnerStreet2>
            <rptOwnerCity>LAS VEGAS</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>89134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isTenPercentOwner>true</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>76552330</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This report is filed by Cannae Holdings, Inc. (&quot;Cannae&quot;), Cannae Holdings, LLC (&quot;Cannae LLC&quot;), and DNB Holdco, LLC (&quot;DNB Holdco&quot;) (each, a &quot;Reporting Person&quot;). Cannae is the sole member of Cannae LLC, which in turn is the sole member of DNB Holdco. Solely for purposes of Section 16 of the Exchange Act, each Reporting Person may be deemed a &quot;director by deputization&quot;.</footnote>
        <footnote id="F2">Represents shares held directly by DNB Holdco, and held indirectly by Cannae LLC and Cannae.</footnote>
    </footnotes>

    <remarks>Exhibit 99.1 (Joint Filer Information) is incorporated herein by reference.
This amendment is being filed to correct the reported share number.</remarks>

    <ownerSignature>
        <signatureName>See Exhibit 99.1 for signatures.</signatureName>
        <signatureDate>2020-10-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
