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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2015-04-15</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001592386</issuerCik>
        <issuerName>Virtu Financial, Inc.</issuerName>
        <issuerTradingSymbol>VIRT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001591033</rptOwnerCik>
            <rptOwnerName>Cruger William Frank Jr.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O VIRTU FINANCIAL, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>900 THIRD AVENUE</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022-1010</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class C common stock</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6389</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Non-voting common interest units of Virtu Financial LLC</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>6389</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Shares of Class C common stock of the Issuer (&quot;Class C Common Stock&quot;) have one vote per share but no economic rights (including rights to dividends and distributions upon liquidation) and are issued in an equal amount to the number of non-voting common interest units of Virtu Financial LLC (&quot;Virtu Financial Units&quot;) held.</footnote>
        <footnote id="F2">Pursuant to the terms of the Exchange Agreement, effective as of April 15, 2015, by and among the Issuer, Virtu Financial LLC and the equityholders of Virtu Financial LLC (the &quot;Exchange Agreement&quot;), Virtu Financial Units, together with a corresponding number of shares of Class C Common Stock, may be exchanged for shares of Class A common stock of the Issuer, which have one vote per share and economic rights (including rights to dividends and distributions upon liquidation), on a one-for-one basis at the discretion of the holder.  The exchange rights under the Exchange Agreement do not expire.</footnote>
        <footnote id="F3">By Virtu Employee Holdco LLC, a holding vehicle through which employees and directors of the Issuer hold vested and unvested Virtu Financial Units and shares of Class C common stock.  The reporting person disclaims beneficial ownership in such Virtu Financial Units and shares held by Virtu Employee Holdco LLC except to the extent of his pecuniary interest therein. 6,389 Virtu Financial Units held by the reporting person are subject to time-based vesting.</footnote>
    </footnotes>

    <remarks>Exhibit 24.1: Power of Attorney.</remarks>

    <ownerSignature>
        <signatureName>/s/ Justin Waldie</signatureName>
        <signatureDate>2015-04-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
