<?xml version="1.0"?>
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    <schemaVersion>X0708</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001691613</cik>
        <entityName>Marshall Wace Funds PLC - MW Alpha Plus Fund</entityName>
        <issuerAddress>
            <street1>32 MOLESWORTH STREET</street1>
            <city>DUBLIN</city>
            <stateOrCountry>L2</stateOrCountry>
            <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
            <zipCode>2</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>44-0207-925-7636</issuerPhoneNumber>
        <jurisdictionOfInc>IRELAND</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <previousName>Marshall Wace Funds PLC - MW Systematic Alpha Plus Fund</previousName>
            <previousName>Marshall Wace Funds PLC - MW Liquid Alpha Plus Fund</previousName>
        </edgarPreviousNameList>
        <entityType>Other</entityType>
        <entityTypeOtherDesc>Segregated Sub-fund of corporation</entityTypeOtherDesc>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Gregory</firstName>
                <lastName>Bennett</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>32 Molesworth Street</street1>
                <city>Dublin</city>
                <stateOrCountry>L2</stateOrCountry>
                <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
                <zipCode>2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Patrick</firstName>
                <lastName>Flaherty</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>32 Molesworth Street</street1>
                <city>Dublin</city>
                <stateOrCountry>L2</stateOrCountry>
                <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
                <zipCode>2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <lastName>Hammond</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>32 Molesworth Street</street1>
                <city>Dublin</city>
                <stateOrCountry>L2</stateOrCountry>
                <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
                <zipCode>2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Barbara</firstName>
                <lastName>Healy</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>32 Molesworth Street</street1>
                <city>Dublin</city>
                <stateOrCountry>L2</stateOrCountry>
                <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
                <zipCode>2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Marion</firstName>
                <lastName>Mulvey</lastName>
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            <relatedPersonAddress>
                <street1>32 Molesworth Street</street1>
                <city>Dublin</city>
                <stateOrCountry>L2</stateOrCountry>
                <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
                <zipCode>2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
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        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <lastName>Thomas</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>32 Molesworth Street</street1>
                <city>Dublin</city>
                <stateOrCountry>L2</stateOrCountry>
                <stateOrCountryDescription>IRELAND</stateOrCountryDescription>
                <zipCode>2</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>-</firstName>
                <lastName>Marshall Wace LLP</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>George House, 131 Sloane Street</street1>
                <city>London</city>
                <stateOrCountry>X0</stateOrCountry>
                <stateOrCountryDescription>UNITED KINGDOM</stateOrCountryDescription>
                <zipCode>SW1X 9AT</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Investment Manager</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Hedge Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <aggregateNetAssetValueRange>Decline to Disclose</aggregateNetAssetValueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
            <item>3C</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0000902664-25-001674</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2016-11-01</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>316841456</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>10</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse>The fund charges a management fee that is described in the fund's governing documents.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Marshall Wace Funds PLC - MW Alpha Plus Fund</issuerName>
                <signatureName>/s/ Gregory Bennett</signatureName>
                <nameOfSigner>Gregory Bennett</nameOfSigner>
                <signatureTitle>Director</signatureTitle>
                <signatureDate>2026-04-03</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
