Three months ended June 30,

Six months ended June 30,

2011

2010

2011

2010

Net income attributable to Amphenol Corporation shareholders

$

147,751

$

129,671

$

275,709

$

228,024

Basic weighted average common shares outstanding

171,194,474

173,519,882

173,170,408

173,393,698

Effect of dilutive stock options

2,397,984

2,365,583

2,536,937

2,337,393

Diluted weighted average common shares outstanding

173,592,458

175,885,465

175,707,345

175,731,091

Earnings per share attributable to Amphenol Corporation shareholders:

Basic

$

0.86

$

0.75

$

1.59

$

1.32

Diluted

$

0.85

$

0.74

$

1.57

$

1.30