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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001209191-04-035325.txt : 20040708
<SEC-HEADER>0001209191-04-035325.hdr.sgml : 20040708
<ACCEPTANCE-DATETIME>20040708175554
ACCESSION NUMBER:		0001209191-04-035325
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040116
FILED AS OF DATE:		20040708

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARKETWATCH COM INC
		CENTRAL INDEX KEY:			0001258655
		STANDARD INDUSTRIAL CLASSIFICATION:	NEWSPAPERS:  PUBLISHING OR PUBLISHING & PRINTING [2711]
		IRS NUMBER:				270064104
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		825 BATTERY STREET
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111
		BUSINESS PHONE:		4157330500

	MAIL ADDRESS:	
		STREET 1:		825 BATTERY STREET
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NMP INC
		DATE OF NAME CHANGE:	20030806

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PEARSON PLC
		CENTRAL INDEX KEY:			0000938323
		STANDARD INDUSTRIAL CLASSIFICATION:	BOOKS: PUBLISHING OR PUBLISHING AND PRINTING [2731]
		STATE OF INCORPORATION:			X0

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50562
		FILM NUMBER:		04906785

	BUSINESS ADDRESS:	
		STREET 1:		3 BURLINGTON GARDENS
		STREET 2:		BANK OF NEW YORK
		CITY:			LONDON ENGLAND
		STATE:			X0
		ZIP:			W1X 1LE
		BUSINESS PHONE:		4420744120

	MAIL ADDRESS:	
		STREET 1:		3 BURLINGTON GARDENS
		CITY:			LONDON ENGLAND
		STATE:			X0
		ZIP:			W1X 1LE
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>bol47660_pplcl.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2004-01-16</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001258655</issuerCik>
        <issuerName>MARKETWATCH COM INC</issuerName>
        <issuerTradingSymbol>MKTW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000938323</rptOwnerCik>
            <rptOwnerName>PEARSON PLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>80 STRAND</rptOwnerStreet1>
            <rptOwnerStreet2>LONDON</rptOwnerStreet2>
            <rptOwnerCity>WC2R 0RL</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>UK</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $.01 per share</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5636814</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">In connection with the merger (the &quot;Merger&quot;), effective as of January 16, 2004, of  MarketWatch Media, Inc. (f/k/a MarketWatch.com, Inc.) and Pinnacor Inc. through the formation of MarketWatch.com, Inc. (f/k/a NMP, Inc.) as a holding company, the 5,636,814 shares of Common Stock of MarketWatch Media, Inc. previously held by Pearson International Finance Ltd., a corporation organized under the laws of England and Wales (&quot;PIFL&quot;) were exchanged for 5,636,814  shares of Common Stock of MarketWatch.com, Inc. PIFL is a wholly-owned direct subsidiary of the Reporting Person. The Reporting Person disclaims beneficial ownership of these shares of Common Stock except to the extent of its pecuniary interest derived through its ownership interest in PIFL. On the effective date of the Merger, the closing price of MarketWatch.com, Inc.'s Common Stock was $9.87 per share.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Stephen Jones, Pearson plc</signatureName>
        <signatureDate>2004-07-09</signatureDate>
    </ownerSignature>
</ownershipDocument>

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