PROSPECTUS SUPPLEMENT File No. 333-38792 - --------------------- Rule 424(b)(3) (To Prospectus Supplement and Prospectus dated June 16, 2000 and June 15, 2000, respectively) Prospectus number: 2066 Merrill Lynch & Co., Inc. Medium Term Notes, Series B Due Nine Months or More from Date of Issue Floating Rate Notes Principal Amount: $312,000,000 Original Issue Date: January 8, 2001 CUSIP Number: 59018Y DF5 Stated Maturity Date: January 8, 2002 Interest Calculation: Day Count Convention: - --------------------- --------------------- [X] Regular Floating Rate Note [X] Actual/360 [ ] Inverse Floating Rate Note [ ] 30/360 (Fixed Interest Rate): [ ] Actual/Actual Interest Rate Basis: - -------------------- [ ] LIBOR [ ] Commercial Paper Rate [ ] CMT Rate [ ] Eleventh District Cost of Funds Rate [ ] Prime Rate [ ] CD Rate [X] Federal Funds Rate [ ] Other (see attached) [ ] Treasury Rate Designated CMT Page: Designated LIBOR Page: CMT Telerate Page: LIBOR Telerate Page: CMT Reuters Page: LIBOR Reuters Page: Index Maturity: Fed Funds Effective Minimum Interest Rate: Not Applicable Spread: 0.1650% Maximum Interest Rate: Not Applicable Initial Interest Rate: TBD Spread Multiplier: Not Applicable Interest Reset Dates: Daily commencing January 8, 2001, subject to following business day convention. Interest Payment Dates: Quarterly, on the 8th of January, April, July, October commencing April 8, 2001, subject to following business day convention. Repayment at the Option of the Holder: The Notes cannot be repaid prior to the Stated Maturity Date. Redemption at the Option of the Company: The Notes cannot be redeemed prior to the Stated Maturity Date. Form: The Notes are being issued in fully registered book-entry form. Trustee: The Chase Manhattan Bank Dated: Jan 3, 2001