<SEC-DOCUMENT>0001173431-17-000190.txt : 20171128
<SEC-HEADER>0001173431-17-000190.hdr.sgml : 20171128
<ACCEPTANCE-DATETIME>20171128161525
ACCESSION NUMBER:		0001173431-17-000190
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20171125
FILED AS OF DATE:		20171128
DATE AS OF CHANGE:		20171128

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Quirk Steven M.
		CENTRAL INDEX KEY:			0001659211

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35509
		FILM NUMBER:		171225630

	MAIL ADDRESS:	
		STREET 1:		200 S. 108TH AVE.
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68154

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TD AMERITRADE HOLDING CORP
		CENTRAL INDEX KEY:			0001173431
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		IRS NUMBER:				820543156
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		200 SOUTH 108TH AVENUE
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68154
		BUSINESS PHONE:		4023317856

	MAIL ADDRESS:	
		STREET 1:		200 SOUTH 108TH AVENUE
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68154

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMERITRADE HOLDING CORP
		DATE OF NAME CHANGE:	20020917

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARROW STOCK HOLDING CORP
		DATE OF NAME CHANGE:	20020514
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_151190371087707.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-11-25</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001173431</issuerCik>
        <issuerName>TD AMERITRADE HOLDING CORP</issuerName>
        <issuerTradingSymbol>AMTD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001659211</rptOwnerCik>
            <rptOwnerName>Quirk Steven M.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 S. 108TH AVE.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>OMAHA</rptOwnerCity>
            <rptOwnerState>NE</rptOwnerState>
            <rptOwnerZipCode>68154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Trader Group</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-11-25</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>6420</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>49.39</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>73586</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Brenna O'Connor, as attorney-in-fact for Steven M. Quirk</signatureName>
        <signatureDate>2017-11-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>