Earnings Per Share

12 Months Ended

Dec. 31, 2011

Earnings Per Share

Earnings Per Share

Note 8—Earnings Per Share

Basic earnings per share (“EPS”) is computed by dividing net income attributable to Amphenol Corporation by the weighted-average number of common shares outstanding. Diluted EPS is computed by dividing net income attributable to Amphenol Corporation by the weighted-average number of common shares and dilutive common shares outstanding, which relates to stock options. A reconciliation of the basic average common shares outstanding to diluted average common shares outstanding as of December 31 is as follows (dollars in thousands, except per share amounts):

	2011		2010		2009
Net income attributable to Amphenol Corporation shareholders	$	524,191	$	496,405	$	317,834
Basic average common shares outstanding	169,640,115		173,785,650		171,607,643
Effect of dilutive stock options	2,185,473		2,540,343		2,334,109
Dilutive average common shares outstanding	171,825,588		176,325,993		173,941,752
Earnings per share:
Basic	$	3.09	$	2.86	$	1.85
Diluted	$	3.05	$	2.82	$	1.83

Excluded from the computations above were anti-dilutive shares of 4,286,519, 2,570,500 and 2,062,700 for the years ended December 31, 2011, 2010 and 2009, respectively.