Filed Pursuant to Rule 424(b)(3)
Registration No. 333-132911

 
SUPPLEMENT
(To the MTN prospectus supplement, general prospectus supplement and prospectus dated March 31, 2006 and to the related pricing supplement indicated below).
 
Supplement Number: 2688
 

Merrill Lynch & Co., Inc.
 
Medium-Term Notes, Series C
Due Nine Months or More from Date of Issue
 
Re-Opening of Existing Series
 
 
This supplement relates to the the “re-opening”, or offering of additional securities of, the series of Merill Lynch & Co., Inc. senior debt securities indicated below (the “Notes”). The Notes offered hereby are being distributed by Merill Lynch, Pierce, Fenner & Smith Incorporated.
 
 Series to be Re-Opened:  Medium-Term Notes, Series C, Fixed Rate Notes due February 15, 2017
   
 CUSIP Number:  59018YZQ7
   
   
Date of Pricing Supplement  
Related to the Notes:
 February 5, 2007
   
Principal Amount of Notes
Currently Outstanding:
  $ 70,000,000.00
 
   The Notes Offered Hereby  
     
   Principal Amount:   $5,000,000.00
     
   Settlement Date:   March 15, 2007
     
   Interest Commencement Date  February 15, 2007
   (The most recent Interest Payment Date)  
     
   Pricing Information (per $1000 principal amount):  
 
 Price to Public:  100.5000%
 (including accrued interest)  
 Proceeds to the Issuer:  $ 1,005.0000
 Underwriting Discount  N/A
   
   
 
Documentation:
You should read this supplement, together with the documents listed below, which together contain the terms of the Notes and supersede all prior or contemporaneous oral statements as well as any other written materials. We urge you to consult your investment, legal, tax, accounting and other advisers before you invest in the Notes.
 
You may access these documents on the SEC Web site at www.sec.gov as follows (or if such address has changed, by reviewing our filings for the relevant date on the SEC Web site):
 
•
Pricing Supplement dated : February 5, 2007
    http://www.sec.gov/Archives/edgar/data/65100/000090514807001416/efc7-0569_424b3.htm
 
•
MTN prospectus supplement, dated March 31, 2006:
    http://www.sec.gov/Archives/edgar/data/65100/000119312506070946/d424b5.htm
 
•
General prospectus supplement dated March 31, 2006:
    http://www.sec.gov/Archives/edgar/data/65100/000119312506070973/d424b5.htm
 
•
Prospectus dated March 31, 2006:
    http://www.sec.gov/Archives/edgar/data/65100/000119312506070817/ds3asr.htm
 
Dated:
March 13, 2007