File No. 33-38879 Rule 424(b)(3) PROSPECTUS SUPPLEMENT (To Prospectus dated March 24, 1994) (To Prospectus Supplement dated March 29, 1994) No.: 1158 Dated: 05/09/94 MERRILL LYNCH & CO., INC. Medium-Term Notes Base Rate: ___Commercial Paper Index Rate ___Federal Funds Rate _X_LIBOR ___Treasury Index Rate ___Prime Rate ___Fixed Rate Maturity Date: 05/18/1999 Redemption Date: N/A Optional Repayment Dates: N/A Spread: +0.25% (plus twenty five basis points) Spread Multiplier: N/A Maximum Interest Rate: N/A Minimum Interest Rate: N/A Interest Reset Dates: May 18, 1994 and each Interest Payment Date thereafter excluding the Maturity Date. Interest Payment Dates: 18th day of February, May, August & November, commencing August 18, 1994, through the Maturity Date. Initial Interest Rate: 5.00% Index Maturity: 3 months Form: Book-entry