EXHIBIT 11 OGDEN CORPORATION AND SUBSIDIARIES DETAIL OF COMPUTATION OF EARNINGS PER SHARE APPLICABLE TO COMMON STOCK FOR THE NINE MONTHS ENDED SEPTEMBER 30, ------------------------------------------------------------ 1999 1998 Income Shares Per-Share Income Shares Per-Share (Numerator) (Denominator) Amount (Numerator) (Denominator) Amount ----------- ------------- --------- ----------- ------------- -------- (In Thousands, Except per Share Amounts) Income from continuing operations $ 28,680 $ 22,815 Less: preferred stock dividends 104 109 -------- -------- Basic Earnings Per Share 28,576 49,157 $ 0.59 22,706 50,071 $ 0.45 ------ ------ Effect of Dilutive Securities: Stock options 405 887 Convertible preferred stock 104 249 109 258 6% convertible debentures (A) (A) 5 3/4% convertible debentures (A) (A) -------- ------ -------- ------ Diluted Earnings per Share $ 28,680 49,811 $ 0.58 $ 22,815 51,216 $ 0.45 -------- ------ ------ -------- ------ ------ Discontinued operations Basic $ (883) 49,157 $(0.02) $ 44,100 50,071 $ 0.88 -------- ------ ------ -------- ------ ------ Diluted $ (883) 49,811 $(0.02) $ 44,100 51,216 $ 0.86 -------- ------ ------ -------- ------ ------ Cumulative effect of change in accounting principle Basic $ (3,820) 49,157 $(0.08) -------- ------ ------ Diluted $ (3,820) 49,811 $(0.08) -------- ------ ------ (A) Anti-dilutive Note: Basic earnings per common share was computed by dividing net income, reduced by preferred stock dividend requirements, by the weighted average of the number of shares of common stock outstanding during each period. Diluted earnings per common share was computed on the assumption that all convertible debentures, convertible preferred stock, and stock options converted or exercised during each period, or outstanding at the end of each period were converted at the beginning of each period or the date of issuance or grant, if dilutive. The computation provides for the elimination of related convertible debenture interest and preferred dividends. EXHIBIT 11 OGDEN CORPORATION AND SUBSIDIARIES DETAIL OF COMPUTATION OF EARNINGS PER SHARE APPLICABLE TO COMMON STOCK FOR THE THREE MONTHS ENDED SEPTEMBER 30, ------------------------------------------------------------ 1999 1998 Income Shares Per-Share Income Shares Per-Share (Numerator) (Denominator) Amount (Numerator) (Denominator) Amount ----------- ------------- --------- ----------- ------------- -------- (In Thousands, Except per Share Amounts) Income from continuing operations $ 8,353 $14,059 Less: preferred stock dividends 34 36 -------- ------- Basic Earnings Per Share 8,319 49,382 $ 0.17 14,023 49,653 $ 0.28 ------ ------ Effect of Dilutive Securities: Stock options 218 575 Convertible preferred stock 34 246 36 255 6% convertible debenture (A) (A) 5 3/4% convertible debentures (A) (A) -------- ------ ------- ------ Diluted Earnings per Share $ 8,353 49,846 $ 0.17 $14,059 50,483 $ 0.28 -------- ------ ------ ------- ------ ------ Discontinued operations Basic $(16,069) 49,382 $(0.33) $14,096 49,653 $ 0.29 -------- ------ ------- ------- ------ ------ Diluted $(16,069) 49,382 $(0.33) $14,096 50,483 $ 0.28 -------- ------ ------- ------- ------ ------ (A) Anti-dilutive