EXHIBIT 11.1 THE PMI GROUP, INC. AND SUBSIDIARIES COMPUTATION OF NET INCOME PER SHARE THREE MONTHS ENDED NINE MONTHS ENDED SEPTEMBER 30, SEPTEMBER 30, (In thousands, except per share data) 1998 1997 1998 1997 -------------- -------------- -------------- -------------- BASIC NET INCOME PER COMMON SHARE: Net income $ 53,728 $ 41,913 $ 146,283 $ 133,364 Average common shares outstanding 30,916 33,180 31,750 33,671 -------------- -------------- -------------- -------------- BASIC NET INCOME PER COMMON SHARE $ 1.74 $ 1.26 $ 4.61 $ 3.96 ============== ============== ============== ============== DILUTED NET INCOME PER COMMON SHARE: Net income $ 53,728 $ 41,913 $ 146,283 $ 133,364 -------------- -------------- -------------- -------------- Average common shares outstanding 30,916 33,180 31,750 33,671 Net shares to be issued upon exercise of dilutive stock options after applying treasury stock method 118 119 160 124 -------------- -------------- -------------- -------------- Average shares outstanding 31,034 33,299 31,910 33,795 -------------- -------------- -------------- -------------- DILUTED NET INCOME PER COMMON SHARE $ 1.73 $ 1.26 $ 4.58 $ 3.95 ============== ============== ============== ==============