EXHIBIT 11.1 DONALDSON, LUFKIN & JENRETTE, INC. SCHEDULE OF COMPUTATION OF WEIGHTED AVERAGE NUMBER OF COMMON SHARES AND COMMON SHARE EQUIVALENTS OUTSTANDING AND BASIC EARNINGS PER SHARE FOR THE YEARS ENDED DECEMBER 31, 1998, 1997 AND 1996 Years Ended December 31, 1998 1997 1996 ---- ---- ---- (in thousands, except per share data) Weighted Average Common Shares: Average Common Shares Outstanding 119,111 110,278 106,600 Average Restricted Stock Units Outstanding 149 40 - Average Common Shares Issuable Under Employee Benefit Plans - - - --------- --------- --------- Weighted Average Common Shares Outstanding: 119,260 110,318 106,600 Earnings: Net Income $ 370,800 $ 408,250 $ 291,300 Less: Preferred Stock Dividend Requirement 21,310 12,144 18,653 --------- --------- --------- Earnings Applicable to Basic Common Shares $ 349,490 $ 396,106 $ 272,647 ========= ========= ========= Basic Earnings Per Common Share $ 2.93 $ 3.59 $ 2.56 ========= ========= =========