Earnings Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share

Earnings Per Share

Note 6—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 months ended March 31, 2013 and 2012 is as follows (dollars in thousands, except per share amounts):

	Three months ended March 31,
	2013		2012
Net income attributable to Amphenol Corporation shareholders	$	153,007	$	126,563
Basic weighted average common shares outstanding	159,738,168		162,861,863
Effect of dilutive stock options	2,974,834		2,493,275
Diluted weighted average common shares outstanding	162,713,002		165,355,138
Earnings per share attributable to Amphenol Corporation shareholders:
Basic	$	0.96	$	0.78
Diluted	$	0.94	$	0.77

Excluded from the computations above were anti-dilutive stock options of 1,263,518 and 4,185,293 for the three months ended March 31, 2013 and 2012, respectively.