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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 RxaBzaSiceFcRFfe1NBvlTOBV7DTYP5ZrhkmSE9Vij2ek162SWJWyDXvi7ZvBzzc
 AxzQhbYf36NoylvmauvBRQ==

<SEC-DOCUMENT>0001209191-05-010022.txt : 20050215
<SEC-HEADER>0001209191-05-010022.hdr.sgml : 20050215
<ACCEPTANCE-DATETIME>20050215183647
ACCESSION NUMBER:		0001209191-05-010022
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050121
FILED AS OF DATE:		20050215
DATE AS OF CHANGE:		20050215

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARKETWATCH 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:	MARKETWATCH COM INC
		DATE OF NAME CHANGE:	20040121

	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
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50562
		FILM NUMBER:		05618644

	BUSINESS ADDRESS:	
		STREET 1:		80 STRAND
		CITY:			LONDON ENGLAND
		STATE:			X0
		ZIP:			WC2R 0RL
		BUSINESS PHONE:		442070102000

	MAIL ADDRESS:	
		STREET 1:		80 STRAND
		CITY:			LONDON ENGLAND
		STATE:			X0
		ZIP:			WC2R 0RL
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>l48349plc_4.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-01-21</periodOfReport>

    <issuer>
        <issuerCik>0001258655</issuerCik>
        <issuerName>MARKETWATCH 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></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2005-01-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5636814</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">As announced by the Issuer pursuant to a merger dated November 14, 2004, among Dow Jones &amp; Company, Inc. (&quot;Dow Jones&quot;), Golden Acquisition Corp. (&quot;Golden&quot;) and the Issuer, the Issuer
merged with Golden, a wholly-owned subsidiary of Dow Jones, with the Issuer surviving the merger as a wholly-owned subsidiary of Dow Jones.  Each outstanding share of the Issuer's Common Stock,  including the Common Stock beneficially owned by the Reporting Person, was converted automatically into the right to receive $18.00 in cash, without interest.</footnote>
        <footnote id="F2">Pursuant to the merger, the 5,636,814 shares of Common Stock of the Issuer previously held directly by Pearson International Finance Ltd., a corporation organized under the laws of England and  Wales (&quot;PIFL&quot;) were converted automatically into the right to receive $18.00 in cash, without interest. 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.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Stephen Jones, Pearson plc</signatureName>
        <signatureDate>2005-02-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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