EXHIBIT 11 MGIC INVESTMENT CORPORATION AND SUBSIDIARIES STATEMENT RE COMPUTATION OF NET INCOME PER SHARE Three and Nine Month Periods Ended September 30, 2002 and 2001 Three Months Ended Nine Months Ended September 30, September 30, ----------------------------- ------------------------------ 2002 2001 2002 2001 (In thousands of dollars, except per share data) BASIC EARNINGS PER SHARE Average common shares outstanding 102,825 107,305 104,793 107,099 ============ ============ ============ ============ Net income $ 151,570 $ 158,992 $ 491,693 $ 478,134 ============ ============ ============ ============ Basic earnings per share $ 1.47 $ 1.48 $ 4.69 $ 4.46 ============ ============ ============ ============ DILUTED EARNINGS PER SHARE Adjusted weighted average shares outstanding: Average common shares outstanding 102,825 107,305 104,793 107,099 Net shares to be issued upon exercise of dilutive stock options after applying treasury stock method 536 913 718 937 ------------ ------------ ------------ ------------ Adjusted weighted average diluted shares outstanding 103,361 108,218 105,511 108,036 ============ ============ ============ ============ Net income $ 151,570 $ 158,992 $ 491,693 $ 478,134 ============ ============ ============ ============ Diluted earnings per share $ 1.47 $ 1.47 $ 4.66 $ 4.43 ============ ============ ============ ============