Earnings Per Share

9 Months Ended

Sep. 30, 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 issuable upon the exercise of outstanding stock options. A reconciliation of the basic weighted average common shares outstanding to diluted weighted average common shares outstanding for the three and nine months ended September 30, 2011 and 2010 is as follows (dollars in thousands, except per share amounts):

	Three months endedSeptember 30,				Nine months ended September 30,
	2011		2010		2011		2010
Net income attributable to Amphenol Corporation	$	134,623	$	137,268	$	410,332	$	365,292
Basic weighted average common shares outstanding	167,951,866		173,813,753		171,411,779		173,535,255
Effect of dilutive stock options	1,883,201		2,410,996		2,316,630		2,362,197
Diluted weighted average common shares outstanding	169,835,067		176,224,749		173,728,409		175,897,452
Earnings per share attributable to Amphenol Corporation:
Basic	$	0.80	$	0.79	$	2.39	$	2.11
Diluted	$	0.79	$	0.78	$	2.36	$	2.08

Excluded from the computations above were anti-dilutive common shares of 6,319,513 and 4,394,863 for the three months ended September 30, 2011 and 2010, respectively, and 3,555,165 and 3,530,395 for the nine months ended September 30, 2011 and 2010, respectively.