UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
 Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 2)*
Molson Coors Brewing Company
 (Name of Issuer)
Class B Common Stock
 (Title of Class of Securities)
60871R209
 (CUSIP Number)
December 31, 2009
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP: 60871R209                                                Page 1 of 7	

1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Capital Research Global Investors **
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a)
(b)

3 SEC USE ONLY
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
5 SOLE VOTING POWER
5,765,900

             6   SHARED VOTING POWER
 NUMBER OF
   SHARES         NONE
BENEFICIALL
 Y OWNED BY
             7   SOLE DISPOSITIVE POWER
    EACH
 REPORTING        19,388,900
   PERSON
   WITH:
             8   SHARED DISPOSITIVE POWER

                  NONE	

9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
19,388,900 Beneficial ownership disclaimed pursuant to Rule 13d-4
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
 (SEE INSTRUCTIONS)
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
12.2%
12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IA
** A division of Capital Research and Management Company (CRMC)

CUSIP: 60871R209                                                Page 2 of 7	

1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
The Investment Company of America
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a)
(b)

3 SEC USE ONLY
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
5 SOLE VOTING POWER
8,250,000

             6   SHARED VOTING POWER
 NUMBER OF
   SHARES         NONE
BENEFICIALL
 Y OWNED BY
             7   SOLE DISPOSITIVE POWER
    EACH
 REPORTING        NONE
   PERSON
   WITH:
             8   SHARED DISPOSITIVE POWER

                  NONE	

9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
8,250,000 See Additional information in Item 4.
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
 (SEE INSTRUCTIONS)
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
5.2%
12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
IV

CUSIP: 60871R209                                                Page 3 of 7	

SECURITIES AND EXCHANGE COMMISSION
 Washington, DC 20549
Schedule 13G
Under the Securities Exchange Act of 1934
Amendment No. 2
Item 1(a) Name of Issuer:
Molson Coors Brewing Company
Item 1(b) Address of Issuer's Principal Executive Offices:
 1225 17th Street
Suite 3200
Denver, CO 80202
Item 2(a) Name of Person(s) Filing:
 Capital Research Global Investors and The Investment Company of America
Item 2(b) Address of Principal Business Office or, if none,
 Residence:
333 South Hope Street
Los Angeles, CA 90071
Item 2(c) Citizenship: N/A
Item 2(d) Title of Class of Securities:
Class B Common Stock
Item 2(e) CUSIP Number:
60871R209
Item 3 If this statement is filed pursuant to sections 240.13d-1(b)
 or 240.13d-2(b) or (c), check whether the person filing is a:
(d) [X] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
(e) [X] An investment adviser in accordance with section 240.13d-1(b)(1)(ii)(E).
Item 4 Ownership
Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.
(a) Amount beneficially owned:
(b) Percent of class:
(c) Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
(ii) Shared power to vote or to direct the vote:
(iii) Sole power to dispose or to direct the disposition of:
(iv) Shared power to dispose or to direct the disposition of:
See pages 2 and 3

CUSIP: 60871R209                                                Page 4 of 7	

Capital Research Global Investors is deemed to be the beneficial owner of 19,388,900 shares or 12.2% of the 158,966,415 shares of Class B Common Stock believed to be outstanding as a result of CRMC acting as investment adviser to various investment companies registered under Section 8 of the Investment Company Act of 1940.
The Investment Company of America, an investment company registered under the Investment Company Act of 1940, which is advised by Capital Research and Management Company ("CRMC"), is the beneficial owner of 8,250,000 shares or 5.2% of the 158,966,415 shares of Class B Common Stock believed to be outstanding. CRMC manages equity assets for various investment companies through two divisions, Capital Research Global Investors and Capital World Investors. These divisions generally function separately from each other with respect to investment research activities and they make investment decisions and proxy voting decisions for the investment companies on a separate basis.
Item 5 Ownership of Five Percent or Less of a Class. If this
 statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following: [ ]
Item 6 Ownership of More than Five Percent on Behalf of Another
 Person: One or more clients of Capital Research Global Investors have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Class B Common Stock of Molson Coors Brewing Company. Capital Research Global Investors holds more than five percent of the outstanding Class B Common Stock of Molson Coors Brewing Company as of December 31, 2009 on behalf of each of the following client(s):
The Investment Company of America
Item 7 Identification and Classification of the Subsidiary Which
 Acquired the Security Being Reported on By the Parent Holding Company or Control Person: N/A
Item 8 Identification and Classification of Members of the Group:
 N/A
Item 9 Notice of Dissolution of Group: N/A
Item 10 Certification
By signing below, I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

CUSIP: 60871R209                                                Page 5 of 7	

     Signature

       After reasonable inquiry and to the best of my knowledge and
       belief, I certify that the information set forth in this
       statement is true, complete and correct.

        Date:          February 9, 2010

        Signature:     Timothy D. Armour***
        Name/Title:    Timothy D. Armour - Senior Vice President
                       Capital Research Global Investors

        Date:          February 9, 2010

        Signature:     Vincent P. Corti***
        Name/Title:    Vincent P. Corti - Secretary
                       The Investment Company of America

        ***By  /s/ James P. Ryan
               James P. Ryan
               Attorney-in-fact

          Signed pursuant to a Power of Attorney dated December 21,
          2007 included as an Exhibit to Schedule 13G filed with the
          Securities and Exchange Commission by Capital Research Global
          Investors on January 10, 2008 with respect to Lowes
          Companies, Incorporated.

CUSIP: 60871R209                                                Page 6 of 7	

                               AGREEMENT

                            Los Angeles, CA

   Capital Research Global Investors ("CRGI") and The Investment
Company of America ("ICA") hereby agree to file a joint statement on
Schedule 13G under the Securities Exchange Act of 1934 (the "Act") in
connection with their beneficial ownership of Class B Common Stock
issued by Molson Coors Brewing Company.

   CRGI and ICA state that they are each entitled to individually use
Schedule 13G pursuant to Rule 13d-1(c) of the Act.

   CRGI and ICA are each responsible for the timely filing of the
statement and any amendments thereto, and for the completeness and
accuracy of the information concerning each of them contained therein
but are not responsible for the completeness or accuracy of the
information concerning the others.

                 CAPITAL RESEARCH GLOBAL INVESTORS

                 BY:              Timothy D. Armour***
                                  Timothy D. Armour - Senior Vice
                                   President
                                   Capital Research Global
                                   Investors

                 THE INVESTMENT COMPANY OF AMERICA

                 BY:              Vincent P. Corti***
                                  Vincent P. Corti - Secretary
                                   The Investment Company of
                                   America

***B /s/ James P. Ryan
y
     James P. Ryan
     Attorney-in-fact

     Signed pursuant to a Power of Attorney dated December 21, 2007
     included as an Exhibit to Schedule 13G filed with the Securities
     and Exchange Commission by Capital Research Global Investors on
     January 10, 2008 with respect to Lowes Companies, Incorporated.	

CUSIP: 60871R209 Page 7 of 7