-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 WxBN1E0EQ28dsPzfkp9XaN8LiueCoiC1OuFwAEVFEbSUEEYagMrFZEd+C5lXfs1A
 8RcxEyOJbL2+pWoZjj3k0A==

<SEC-DOCUMENT>0001249008-04-000003.txt : 20040430
<SEC-HEADER>0001249008-04-000003.hdr.sgml : 20040430
<ACCEPTANCE-DATETIME>20040430141327
ACCESSION NUMBER:		0001249008-04-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040429
FILED AS OF DATE:		20040430

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HSBC USA INC /MD/
		CENTRAL INDEX KEY:			0000083246
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				132764867
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		452 FIFTH AVE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018
		BUSINESS PHONE:		2125256100

	MAIL ADDRESS:	
		STREET 1:		452 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ALFIERO SALVALORE H
		CENTRAL INDEX KEY:			0001249008

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07436
		FILM NUMBER:		04769020

	BUSINESS ADDRESS:	
		STREET 1:		PROTECTIVE INDUSTRIES LLC
		STREET 2:		2150 ELMWOOD AVE
		CITY:			BUFFALO
		STATE:			NY
		ZIP:			14207

	MAIL ADDRESS:	
		STREET 2:		2150 ELMWOOD AVE
		CITY:			BUFFALO
		STATE:			NY
		ZIP:			14207
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-04-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000083246</issuerCik>
        <issuerName>HSBC USA INC /MD/</issuerName>
        <issuerTradingSymbol>HBA-E</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001249008</rptOwnerCik>
            <rptOwnerName>ALFIERO SALVALORE H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1></rptOwnerStreet1>
            <rptOwnerStreet2>2150 ELMWOOD AVE</rptOwnerStreet2>
            <rptOwnerCity>BUFFALO</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>14207</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>$1.8125 Series E Cumulative Preferred</value>
            </securityTitle>
            <transactionDate>
                <value>2004-04-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>26</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>180600</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Helen Kujawa, Attorney-in-Fact</signatureName>
        <signatureDate>2004-04-30</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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