STOCK PURCHASE AGREEMENT

This Stock Purchase Agreement (this "***Agreement*") is made and entered into as of March 28, 2000 (the"***Effective Date*") by and among MarketWatch.com, Inc., a Delaware corporation (the"***Company*"), and the parties listed on the Schedule of Investors attached to this Agreement asExhibit A (each hereinafter individually referred to as an "***Investor*" and collectively referredto as the "***Investors*").**Whereas, the Company desires to sell to the Investors, and the Investors desire to purchase from the Company, shares of theCompany's Common Stock on the terms and conditions set forth in this Agreement;
**Now, therefore, the parties hereby agree as follows:
**1.	AGREEMENT TO PURCHASE AND SELL STOCK.**
	**1.1	Authorization.  As of the Closing (as defined below) the Company will have authorized the issuance,pursuant to the terms and conditions of this Agreement, of up to 2,273,628 shares of the Company's Common Stock, par value $0.01 pershare.
	**1.2	Agreement to Purchase and Sell.**  The Company agrees to sell to each Investor at the Closing, and eachInvestor agrees, severally and not jointly, to purchase from the Company at the Closing, the number of shares of Common Stock at theprice per share and type of consideration set forth beside such Investor's name on Exhibit A.  Cash consideration paid byan Investor shall be allocated among all shares purchased by such Investor so that all of such shares will be "fully paid"under applicable law.  The shares of Common Stock purchased and sold pursuant to this Agreement will be collectively hereinafterreferred to as the "***Purchased Shares*.***"*
2.	CLOSING.  The purchase and sale of the Purchased Shares will take place at the offices of Fenwick & WestLLP, Two Palo Alto Square, Palo Alto, California, at 10:00 a.m. Pacific Time, on that certain date on which all applicable waitingperiods (and all extensions thereof) under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (the "***HSRAct*") shall have expired or otherwise been terminated (or such later date following the satisfaction or waiver of all ofthe conditions set forth in Sections 5 and 6 hereof) or at such other time and place as the Company and the Investors mutually agreeupon (which time and place are referred to in this Agreement as the "***Closing*").  At the Closing, the Companywill deliver to each Investor a certificate representing the number of Purchased Shares that such Investor has agreed to purchasehereunder as shown on Exhibit A against delivery to the Company by such Investor of the full purchase price of such PurchasedShares set forth beside such Investor's name on Exhibit A.**3.	REPRESENTATIONS AND WARRANTIES OF THE COMPANY.  The Company hereby represents and warrants to each Investor asfollows:

	**3.1	Organization, Good Standing and Qualification.**  The Company has been duly incorporated and organized, andis validly existing in good standing, under the laws of the State of Delaware.  The Company has the corporate power and authority toenter into and perform this Agreement, to own and operate its properties and assets and to carry on its business as currentlyconducted and as presently proposed to be conducted.  The Company is duly qualified to do business as a foreign corporation in goodstanding in each jurisdiction where failure to be so qualified would have a material adverse effect on the business, assets orfinancial condition of the Company taken as a whole.

	**3.2	Capitalization.**  The capitalization of the Company immediately prior to the Closing consists of thefollowing:

		(a)	Preferred Stock.  A total of 5,000,000 authorized shares of preferred stock, par value $0.01 per share,of which none are issued and outstanding.

		(b)	Common Stock.  A total of 30,000,000 authorized shares of common stock, par value $0.01 per share (the"***Common Stock*"), of which approximately 14,108,696 shares were issued and outstanding as of March 20,2000 (subject to increase only by employee stock option exercises subsequent to March 20, 2000).
		(c)	Options, Warrants, Reserved Shares.  Except for (i) the rights of first refusal granted tocertain stockholders under Section 9 of that certain Stockholders' Agreement dated as of January 13, 1999, as amended (the"***Stockholders' Agreement*"), by and among the Company and such stockholders (the"***Existing Refusal Rights*"), (ii) the 3,685,824 shares of Common Stock reserved for issuance under theCompany's stock option plans under which options to purchase 2,001,575 shares are outstanding as of March 20, 2000 (subject toincrease prior to the Closing due to option grants in the ordinary course), and (iii) options to purchase 150,000 shares of theCompany's Common Stock issued outside of the Company's stock option plans, there is no outstanding option, warrant, right (includingconversion or preemptive rights) or agreement for the purchase or acquisition from the Company of any shares of its capital stock orany securities convertible into or ultimately exchangeable or exercisable for any shares of the Company's capital stock.  Apart fromthe exceptions noted in this Section 3.2(c), and except for any rights of first refusal held by the Company to purchase shares of itsstock issued under the Company's stock option plans, no shares of the Company's outstanding capital stock, or stock issuable uponexercise or exchange of any outstanding options, warrants or rights, or other stock issuable by the Company, are subject to anypreemptive rights, rights of first refusal or other rights to purchase such stock (whether in favor of the Company or any otherperson), pursuant to any agreement or commitment of the Company.  
		(d)	The outstanding shares of the capital stock of the Company are duly authorized and validly issued, fully paid andnonassessable.

	**3.3	Due Authorization.**  All corporate action on the part of the Company's directors and stockholdersnecessary for the authorization, execution, delivery of, and the performance of all obligations of the Company under, thisAgreement,****the authorization, issuance, reservation for issuance and delivery of all of the Purchased Shares being sold underthis Agreement has been taken or will be taken prior to the Closing, and this Agreement constitutes a valid and legally bindingobligation of the Company, enforceable in accordance with its terms, except as may be limited by (i) applicable bankruptcy,insolvency, reorganization or others laws of general application relating to or affecting the enforcement of creditors' rightsgenerally and (ii) the effect of rules of law governing the availability of equitable remedies.

	**3.4	Valid Issuance of Stock.**
	(a)	The Purchased Shares, when issued and paid for as provided in this Agreement will be duly authorized and validlyissued, fully paid and nonassessable.

	(b)	Based in part on the representations made by the Investors in Section 4 hereof, the offer and sale of the PurchasedShares solely to the Investors in accordance with this Agreement are exempt from the registration and prospectus deliveryrequirements of the U.S. Securities Act of 1933, as amended (the "***1933 Act*") and the securities registrationand qualification requirements of the currently effective provisions of the securities laws of the States in which the Investors areresident based upon their addresses set forth on the Schedule of Investors attached hereto as Exhibit A.
	**3.5	Governmental Consents.**  No consent, approval, order or authorization of, or registration, qualification,designation, declaration or filing with, any federal, state or local governmental authority is required on the part of the Company inorder to enable the Company to execute, deliver and perform its obligations under this Agreement exceptfor suchqualifications or filings under applicable securities laws as may be required in connection with the transactions contemplated bythis Agreement.  All such qualifications and filings will, in the case of qualifications, be effective on the Closing and will, inthe case of filings, be made within the time prescribed by law. 

	**3.6	Commission Filings and Financial Statements.**  The Company has filed all forms, reports and documents (the***"SEC Documents"*) required to be filed by it with the U.S. Securities and Exchange Commission (the***"Commission"*) pursuant to the 1933 Act or the U.S. Securities Exchange Act of 1934, as amended (the***"Exchange Act"*), as the case may be, and the rules and regulations of the Commission thereunder since January13, 1999 through the date of this Agreement.  As of their respective filing dates, the SEC Documents complied in all materialrespects with the requirements of the 1933 Act or the Exchange Act, as the case may be, and the rules and regulations of theCommission thereunder applicable to such SEC Documents, and none of the SEC Documents contained any untrue statement of a materialfact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein, in lightof the circumstances under which they were made, not misleading.  As of their respective filing dates, the financial statements ofthe Company included in the SEC Documents complied as to form in all material respects with the applicable accounting requirementsand the rules and regulations of the Commission thereunder and were prepared in accordance with generally accepted accountingprinciples consistently applied (except as may be indicated in the notes thereto) and fairly presented, in all material respects, thefinancial position of the Company as at the dates thereof and the results of operations and cash flows of the Company for the periodsthen ended (subject, in the case of unaudited statements, to normal, recurring audit adjustments not material in scope oramount).**	3.7	Absence of Changes.  Since December 31, 1999 through the date of this Agreement, there has not been (i)any material adverse change in the business, assets or financial condition of the Company, (ii) any transaction that is material tothe Company, except transactions entered into in the ordinary course of business, (iii) any obligation, direct or contingent, that ismaterial to the Company incurred by the Company, except obligations incurred in the ordinary course of business, (iv) any change inthe capital stock or outstanding indebtedness of the Company that is material to the Company, other than the authorization by theBoard of Directors (the "***Board*") of the Company of an increase in the number of shares of the Company'sCommon Stock subject to the Company's 1998 Equity Incentive Plan (the "***Plan*") by additional 1,500,000 shares,(v) any dividend or distribution of any kind declared, paid or made on the capital stock of the Company, or (vi) any loss or damage(whether or not insured) to the property of the Company which has been sustained or will have been sustained which has a materialadverse effect on the business, assets or financial condition of the Company**.
	3.8	Subsidiaries.  The Company does not presently own or control, directly or indirectly, any interest in anyother corporation, partnership, trust, joint venture, association, or other entity, other than (i) BigCharts Inc., a wholly-ownedsubsidiary of the Company, and (ii) a joint venture established pursuant to that certain Joint Venture Agreement made on January 6,2000 between the Company and Financial Times Group Limited. 

	**3.9	Litigation.**  There is no action, suit, proceeding, claim, arbitration or investigation pending("***Litigation*") (or, to the Company's knowledge, currently threatened) against the Company, its activities,properties or assets or, to the Company's knowledge, against any officer, director or employee of the Company in connection with suchofficer's, director's or employee's relationship with, or actions taken on behalf of, the Company, except for any such Litigationthat individually or in the aggregate would have no material adverse impact on the Company's business**.**
	**3.10	Status of Proprietary Assets.**The Company has full title and ownership of, or isduly licensed under or otherwise authorized to use, all patents, patent applications, trademarks, domain names, service marks, tradenames, copyrights, mask works, trade secrets, confidential and proprietary information, designs and proprietary rights, necessary toenable it to carry on its business as now conducted without any conflict with or infringement of the rights of others.Notwithstanding the foregoing, no representation or warranty is made with respect to (i) trademarks, service marks and otherproprietary rights licensed to the Company by CBS Broadcasting Inc. and/or its affiliates, and/or (ii) the enforceability of anyrights of the Company in, or the ability of the Company to use, any trademarks or service marks containing the words"MarketWatch" or "MarketWatch.com."  The Company has not received any written communication from any party oragent thereof alleging that the Company's use of the marks "MarketWatch" or "MarketWatch.com" may infringe suchparty's trademark rights.

	**3.11	Compliance with Law and Documents.  The Company is not in violation or default ofany provisions of its Certificate of Incorporation or Bylaws, both as amended, and to the Company's knowledge, except for anyviolations that individually or in the aggregate would have no material adverse impact on the Company's business, the Company is incompliance with all applicable statutes, laws, regulations and executive orders of the United States of America and all states orother governmental bodies and agencies having jurisdiction over the Company's business or properties. The Company has not receivedany notice of any violation of any such statute, law, regulation or order which has not been remedied prior to the date hereof.  Theexecution, delivery and performance of this Agreement****and the consummation of the transactions contemplated hereby or therebywill not result in any such violation or default, or be in conflict with or result in a violation or breach of, with or without thepassage of time or the giving of notice or both, the Company's Certificate of Incorporation or Bylaws, any judgment, order or decreeof any court or arbitrator to which the Company is a party or is subject, any agreement or contract of the Company that is materialto the Company's business (taken as a whole), or, to the Company's knowledge, a violation of any statute, law, regulation or order,or an event which results in the creation of any lien, charge or encumbrance upon any asset of the Company, except for defaults andviolations that individually or in the aggregate would have no material adverse impact on the Company's business.
	**3.12	Title to Property and Assets.**  The properties and assets the Company owns are ownedby the Company free and clear of all mortgages, deeds of trust, liens, encumbrances and security interests except for statutory liensfor the payment of current taxes that are not yet delinquent and liens, encumbrances and security interests which arise in theordinary course of business and which do not affect material properties and assets of the Company.  With respect to the property andassets it leases, the Company is in material compliance with such leases.

	**3.13	Tax Returns and Payments.**  The Company has timely filed all tax returns and reportsrequired by law.  All tax returns and reports of the Company are true and correct in all material respects.  The Company has paid alltaxes and other assessments due, except those, if any, currently being contested by it in good faith.
**4.	REPRESENTATIONS, WARRANTIES AND CERTAIN AGREEMENTS OF INVESTORS.  Each Investor hereby represents and warrantsto, and agrees with, the Company, severally and not jointly, that:

	**4.1	Authorization.**  All corporate action on the part of such Investor and its officers, directors andstockholders necessary for the authorization, execution and delivery of, and the performance of all obligations of such Investorunder, this Agreement has been taken or will be taken prior to the Closing, and this Agreement constitutes such Investor's valid andlegally binding obligation, enforceable in accordance with its terms except as may be limited by (i) applicable bankruptcy,insolvency, reorganization or other laws of general application relating to or affecting the enforcement of creditors' rightsgenerally and (ii) the effect of rules of law governing the availability of equitable remedies.  Each Investor represents that suchInvestor has full power and authority to enter into this Agreement.****
	**4.2	Purchase for Own Account.**  The Purchased Shares to be purchased by such Investorhereunder will be acquired for investment for such Investor's own account, not as a nominee or agent, and not with a view to thepublic resale or distribution thereof within the meaning of the 1933 Act, and such Investor has no present intention of selling,granting any participation in, or otherwise distributing the same.  If not an individual, such Investor also represents that suchInvestor has not been formed for the specific purpose of acquiring Purchased Shares.

	**4.3	Disclosure of Information.**  Such Investor has received or has had full access to all theinformation it considers necessary or appropriate to make an informed investment decision with respect to the Purchased Shares to bepurchased by such Investor under this Agreement.  Such Investor further has had an opportunity to ask questions and receive answersfrom the Company regarding the terms and conditions of the offering of the Purchased Shares and to obtain additional information (tothe extent the Company possessed such information or could acquire it without unreasonable effort or expense) necessary to verify anyinformation furnished to such Investor or to which such Investor had access.  The foregoing, however, does not in any way limit ormodify the representations and warranties made by the Company in Section 3.

	**4.4	Investment Experience.**  Such Investor understands that the purchase of the Purchased Shares involvessubstantial risk.  Such Investor:  (i) has experience as an investor in securities of companies in the development stage andacknowledges that such Investor is able to fend for itself, can bear the economic risk of such Investor's investment in the PurchasedShares and has such knowledge and experience in financial or business matters that such Investor is capable of evaluating the meritsand risks of this investment in the Purchased Shares and protecting its own interests in connection with this investment and/or (ii)has a preexisting personal or business relationship with the Company and certain of its officers, directors or controlling persons ofa nature and duration that enables such Investor to be aware of the character, business acumen and financial circumstances of suchpersons.  

	**4.5	Accredited Investor Status.**  Such Investor is an "accredited investor" within themeaning of Regulation D promulgated under the 1933 Act.
**	4.6	Restricted Securities.  Such Investor understands that the Purchased Shares are characterized as"restricted securities" under the 1933 Act inasmuch as they are being acquired from the Company in a transaction notinvolving a public offering and that under the 1933 Act and applicable regulations thereunder such securities may be resold withoutregistration under the 1933 Act only in certain limited circumstances.  In this connection, such Investor represents that suchInvestor is familiar with Rule 144 of the Commission, as presently in effect, and understands the resale limitations imposed therebyand by the 1933 Act.  Such Investor understands that the Company is under no obligation to register any of the securities soldhereunder except as provided in that certain Registration Rights Agreement dated as of January 13, 1999, as amended, by and among theCompany and certain stockholders.

	**4.7	Further Limitations on Disposition.**  Without in any way limiting the representations setforth above, such Investor further agrees not to make any disposition of all or any portion of the Purchased Shares unless anduntil:

		(a)	there is then in effect a registration statement under the 1933 Act covering such proposed disposition and suchdisposition is made in accordance with such registration statement; or

		(b)	such Investor shall have notified the Company of the proposed disposition and shall have furnished the Company witha statement of the circumstances surrounding the proposed disposition, and, at the expense of such Investor or its transferee, withan opinion of counsel, reasonably satisfactory to the Company, that such disposition will not require registration of such securitiesunder the 1933 Act.

Notwithstanding the provisions of paragraphs (a) and (b) above, no such registration statement or opinion of counsel shall berequired for any transfer of any Purchased Shares in compliance with Commission Rule 144; provided that in each of theforegoing cases (other than any transfer of any Purchased Shares pursuant to such a registration statement or in compliance withCommission Rule 144) the transferee agrees in writing to be subject to the terms of this Section 4 (other than Section 4.5) to thesame extent as if the transferee were an original Investor hereunder.
**	4.8	Legends.  It is understood that the certificates evidencing the Purchased Shares will bear the legend setforth below: 
*The shares represented by this certificate have not been registered under the Securities Act of 1933, as amended(the "Act"), or under the securities laws of certain states.  These securities are subject to restrictions ontransferability and resale and may not be transferred or resold except as permitted under the Act and the applicable state securitieslaws, pursuant to registration or exemption therefrom.  investors should be aware that they may be required to bear the financialrisks of this investment for an indefinite period of time.  The issuer of these securities may require an opinion of counsel in formand substance satisfactory to the issuer to the effect that any proposed transfer or resale is in compliance with the Act and anyapplicable state securities laws.

The legend set forth above shall be removed by the Company from any certificate evidencing Purchased Shares if aregistration statement under the 1933 Act is at that time in effect with respect to the legended security or if such security can befreely transferred in a public sale without such a registration statement being in effect and if such transfer will not jeopardizethe exemption or exemptions from registration pursuant to which the Company issued the Purchased Shares.

In addition, it is understood that the certificates evidencing the Purchased Shares will bear the legends set forth below, orlegends substantially equivalent thereto:
*The shares represented by this certificate are subject to certain rights of first refusal as set forth in astockholders' agreement dated as of january 13, 1999 entered into by the holder of these shares, the company and certain stockholdersof the company.  a copy of such agreement is on file at the principal office of the company.  such right of first refusal is bindingon certain transferees of these shares.

THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN AGREEMENTS AND RESTRICTIONS WITH REGARD TO THE VOTING OF SUCHSHARES, AS PROVIDED IN A STOCKHOLDERS' AGREEMENT DATED AS OF JANUARY 13, 1999 ENTERED INTO BY THE ORIGINAL HOLDER OF THESE SHARES,THE CORPORATION AND CERTAIN STOCKHOLDERS OF THE CORPORATION.  A COPY OF SUCH AGREEMENT IS ON FILE AT THE PRINCIPAL OFFICE OF THECORPORATION.

The legends set forth above shall be removed by the Company from any certificate evidencing Purchased Shares upon thetermination of such Stockholders' Agreement.
**5.	CONDITIONS TO INVESTORS' OBLIGATIONS AT CLOSING.  The obligations of each Investor under Section 2 of thisAgreement are subject to the fulfillment or waiver, on or before the Closing, of each of the following conditions, the waiver ofwhich shall not be effective against any Investor who does not consent to such waiver, which consent may be given by written, oral ortelephone communication to the Company, its counsel or to special counsel to the Investors:

	**5.1	Representations and Warranties True.**  Each of the representations and warranties of theCompany contained in Section 3 shall be true and complete on and as of the Closing with the same effect as though suchrepresentations and warranties had been made on and as of the date of the Closing.

	**5.2	Performance.**  The Company shall have performed and complied with all agreements, obligations andconditions contained in this Agreement that are required to be performed or complied with by it on or before the Closing and shallhave obtained all approvals, consents and qualifications necessary to complete the purchase and sale described herein.  The otherInvestor shall simultaneously be completing the purchase of the Purchased Shares to be purchased by such other Investor.

	**5.3	Compliance Certificate.**  The Company shall have delivered to each Investor at the Closing acertificate signed on its behalf by its President, Chief Executive Officer, or Chief Financial Officer certifying that the conditionsspecified in Sections 5.1 and 5.2 have been fulfilled and stating that there shall have been no material adverse change in thebusiness, financial condition, or assets of the Company since December 31, 1999.

	**5.4	Securities Exemptions.**  The offer and sale of the Purchased Shares to the Investors pursuant to thisAgreement shall be exempt from the registration requirements of the 1933 Act and the registration and/or qualification requirementsof all other applicable state securities laws.

	**5.5	Proceedings and Documents.**  All corporate and other proceedings in connection with thetransactions contemplated at the Closing and all documents incident thereto shall be reasonably satisfactory in form and substance toeach Investor and to the Investors' special counsel, and they shall each have received all such counterpart originals and certifiedor other copies of such documents as they may reasonably request.  Such documents shall include (but not be limited to) thefollowing:

		(a)	Certified Charter Documents.  A copy of the Amended and Restated Certificate of Incorporation andthe Bylaws of the Company (as amended through the date of the Closing), certified by the Secretary of the Company as true and correctcopies thereof as of the Closing.

		(b)	Corporate Actions.  A copy of the resolutions of the Board of Directors and, if required, thestockholders of the Company evidencing the approval of this Agreement**,**the issuance of the Purchased Shares and the othermatters contemplated hereby.

		**5.6**	**Hart-Scott-Rodino Act.**  All applicable waiting periods (and all extensions thereof) under theHSR Act shall have expired or otherwise been terminated.
**6.	CONDITIONS TO THE COMPANY'S OBLIGATIONS AT CLOSING.  The obligations of theCompany to each Investor under this Agreement are subject to the fulfillment or waiver on or before the Closing of each of thefollowing conditions by such Investor:

	**6.1	Representations and Warranties.**  The representations and warranties of such Investor containedin Section 4 shall be true and complete on the date of the Closing with the same effect as though such representations and warrantieshad been made on and as of the Closing.

	**6.2	Payment of Purchase Price.**  Each Investor shall have delivered to the Company the purchaseprice specified for such Investor on Exhibit A in accordance with the provisions of Section 2.

	**6.3	Securities Exemptions.**  The offer and sale of the Purchased Shares to the Investors pursuant to thisAgreement shall be exempt from the registration requirements of the 1933 Act, the qualifications requirements of the Law and theregistration and/or qualification requirements of all other applicable state securities laws.
**	6.4	Proceedings and Documents.  All corporate and other proceedings in connection with thetransactions contemplated at the Closing and all documents incident thereto shall be reasonably satisfactory in form and substance tothe Company and to the Company's legal counsel, and the Company shall have received all such counterpart originals and certified orother copies of such documents as it may reasonably request.

	**6.5**	**Hart-Scott-Rodino Act.**  All applicable waiting periods (and all extensions thereof) under the HSRAct shall have expired or otherwise been terminated.
**7.	GENERAL PROVISIONS.**
	**7.1	Survival of Warranties.**  The representations, warranties and covenants of the Company andthe Investors contained in or made pursuant to this Agreement shall survive the execution and delivery of this Agreement and theClosing and shall in no way be affected by any investigation of the subject matter thereof made by or on behalf of any of theInvestors, their counsel or the Company, as the case may be.

	7.2	**Existing Refusal Rights.  Each of the Investors hereby waives (i) its right to notice withrespect to the Existing Refusal Rights (as defined in Section 3.2) as they apply to the issuance and sale of the Purchased Shares and(ii) agrees that such issuance and sale pursuant to this Agreement satisfies its Existing Refusal Rights with respect to the issuanceand sale of the Purchased Shares.
	**7.3	Successors and Assigns.  The terms and conditions of this Agreement shall inure to the benefitof and be binding upon the respective successors and assigns of the parties.
	**7.4	Governing Law.**  This Agreement shall be governed by and construed under the internal laws of theState of Delaware, without reference to principles of conflict of laws or choice of laws.

	**7.5	Counterparts.**  This Agreement may be executed in two or more counterparts, each of which shall be deemedan original, but all of which together shall constitute one and the same agreement.

	**7.6	Headings.**  The headings and captions used in this Agreement are used for convenience only and are not tobe considered in construing or interpreting this Agreement.  All references in this Agreement to sections, paragraphs, exhibits andschedules shall, unless otherwise provided, refer to sections and paragraphs hereof and exhibits and schedules attached hereto, allof which exhibits and schedules are incorporated herein by this reference.

	**7.7	Notices.**  Unless otherwise provided, any notice required or permitted under this Agreement shall be givenin writing and shall be deemed effectively given upon personal delivery to the party to be notified or upon deposit with the UnitedStates Post Office, by registered or certified mail, postage prepaid and addressed to the party to be notified at the addressindicated for such party on Exhibit A or, in the case of the Company, at 

MarketWatch.com, Inc.,825 Battery Street,San Francisco, California  94111,Attention:  Joan P. PlattFacsimile:  (415) 392-1914

with a copy to

Fenwick & West LLPTwo Palo Alto SquarePalo Alto, California  94306Attention:  Jeffrey R. Vetter, Esq.Facsimile:  (650) 494-1417

or at such other address as any party or the Company may designate by giving ten (10) days advance written notice to all otherparties.
**	7.8	No Finder's Fees.  Each party represents that it neither is nor will be obligated for anyfinder's or broker's fee or commission in connection with this transaction.  Each Investor agrees to indemnify and to hold harmlessthe Company from any liability for any commission or compensation in the nature of a finders' or broker's fee (and any assertedliability) for which the Investor or any of its officers, partners, employees, or representatives is responsible.  The Company agreesto indemnify and hold harmless each Investor from any liability for any commission or compensation in the nature of a finder's orbroker's fee (and any asserted liability) for which the Company or any of its officers, employees or representatives isresponsible.

	**7.9	Costs, Expenses.**  Each party to this Agreement shall bear its own fees and expenses (including,without limitation, the fees and expenses of its legal counsel) in connection with the preparation, execution and delivery of thisAgreement and the issuance of the Purchased Shares.  

	7**.10	Amendments and Waivers.  A**ny term of this Agreement may be amended and the observance of anyterm of this Agreement may be waived (either generally or in a particular instance and either retroactively or prospectively), onlywith the written consent of the Company and the holders of Purchased Shares representing at least a majority of the aggregate numberof shares of the Purchased Shares (excluding any of such shares that have been sold to the public or pursuant to Commission Rule144).  Any amendment or waiver effected in accordance with this Section shall be binding upon each holder of any Purchased Shares atthe time outstanding, each future holder of such securities, and the Company; provided, however, that no condition setforth in Section 5 may be waived with respect to any Investor who does not consent thereto.

	**7.11	Severability.**  If one or more provisions of this Agreement are held to be unenforceable under applicablelaw, such provision(s) shall be excluded from this Agreement and the balance of the Agreement shall be interpreted as if suchprovision(s) were so excluded and shall be enforceable in accordance with its terms.

	**7.12	Entire Agreement.**  This Agreement, together with all exhibits and schedules hereto, constitutes theentire agreement and understanding of the parties with respect to the subject matter hereof and supersedes any and all priornegotiations, correspondence, agreements, understandings duties or obligations between the parties with respect to the subject matterhereof.

	**7.13	Further Assurances.**  From and after the date of this Agreement, upon the request of any Investor orthe Company, the Company and the Investors shall execute and deliver such instruments, documents or other writings as may bereasonably necessary or desirable to confirm and carry out and to effectuate fully the intent and purposes of this Agreement.

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**In Witness Whereof, the parties hereto have executed this Agreement as of the date first written above.
**MARKETWATCH.COM, INC.	By: 	/s/ Joan P. Platt		Name:	Joan P. Platt		Title: 	Chief Financial Officer		
**CBS BROADCASTING, INC.By:	/s/ Fredric G. ReynoldsName:		Fredric G. ReynoldsTitle:		Executive Vice President, Chief Financial Officer
**DATA BROADCASTING CORPORATIONBy: 	/s/ Stuart J. ClarkName: 	Stuart J. ClarkTitle: 	President and Chief Executive Officer
**EXHIBIT A

Schedule of Investors

 
                                                    Purchase       Aggregate                                        Shares        Price        PurchaseInvestor                               Acquired     per Share        Price                                      -----------   ---------   ---------------CBS BROADCASTING INC.                  1,136,814     $37.825    $43,000,000.0051 West 52nd StreetNew York, NY 10019Attn: Fredric G. Reynolds      Louis J. BriskmanDATA BROADCASTING CORPORATION          1,136,814     $37.825    $43,000,000.0022 Crosby DriveBedford, MA 01730Attn: President and Chief      Executive OfficerCopy: General Counsel                             Totals:  $2,273,628                $86,000,000.00
See the attached pages for description of the consideration to be paid by each Investor.
Investor                           Form of Purchase PriceCBS BROADCASTING INC.              $13.0 million in cash, plus advertising                                   with an aggregate rate card value of                                   $30.0 million allocated as follows:
 

1.	CBS shall arrange for the placement of broadcast advertising and promotion of the websites operated by the Company in themedia category or type as set forth below.  The rate card value of all broadcast advertising provided hereunder shall be based uponthe average paid unit price, excluding barter, for spots purchased during the specific CBS television network, CBS-owned and operatedtelevision stations or Infinity-owned radio stations broadcast in which the advertising occurs.  The rate card value of billboardadvertising provided hereunder shall be based upon the average paid unit price, excluding barter, for billboards with substantiallysimilar location, size and prominence.

	(i) $5.267 million aggregate rate card value of on-air "mentions" of the websites operated by the Company betweenMarch 1, 2000 and February 28, 2001, with the "mentions" to include the "MarketWatch Minute" on 60 Minutes II,and the prominent display of an "over-the-shoulder" graphic of "CBS MarketWatch" only on CBS Evening Newsbroadcasts, Early Show broadcasts (with a 50% reduction for such mentions in exchange for daily segments involving Susan McGinnis)and CBS Morning News (5 a.m.) broadcasts, but not to include "url" displays known as "scrolls" or other on-air"mentions" of the Company's websites;

	(ii) $4.389 million aggregate rate card value of on-air "mentions" of the websites operated by the Company betweenMarch 1, 2001 and December 31, 2001, with the "mentions" to appear in the manner set forth in clause (i) above;

	(iii) $16.344 million aggregate rate card value in advertising of the websites operated by the Company on the CBS televisionnetwork and on CBS-owned and operated television stations between the Closing (as defined in the Stock Purchase Agreement to whichthis Exhibit A is attached) and the second anniversary of the Closing (as defined above), with the timing and placement ofadvertising to be mutually agreed upon between the Company and CBS;

	(iv) $2.0 million aggregate rate card value in advertising of the websites operated by the Company on Infinity-owned radiostations between the Closing (as defined) and the second anniversary of the Closing (as defined), with the timing and placement ofadvertising to be mutually agreed upon between the Company and CBS; and

	(v) $2.0 million aggregate rate card value in billboard advertising of the websites operated by the Company on InfinityOutdoor / TDI between the Closing (as defined) and the second anniversary of the Closing (as defined), with the timing and placementof advertising to be mutually agreed upon between the Company and CBS.	

2.	CBS shall have the right to suspend and/or withdraw placement of broadcast advertising (i) pending resolution of any claimcovering use by the Company of the tradename or trademark "MarketWatch" either alone or in combination with any other mark and/or(ii) during such time as the Company is enjoined from using the tradename or trademark "MarketWatch" on or in connection with itswebsite and has not renamed the website.  The Company shall rename its website within thirty (30) days following the issuance of anyinjunction or the resolution of any claim which requires the Company to cease using the tradename or trademark "MarketWatch" on or inconnection with its website, it being understood, however, that CBS shall have the sole right and power to approve the substitutetradename and/or trademark to be used.  CBS shall not be required to place any advertising that contains any objectionable materialor that would violate Federal Communication Commission rules or regulations or CBS's standards and practices. 

	
DATA BROADCASTING CORPORATION      $43.0 million in cash                     TOTAL         $86.0 million**********************************************************************************