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Earnings Per Share | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share |
Earnings Per Share | Note 9—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 outstanding common shares and dilutive common shares, the dilutive effect of which relates to stock options. A reconciliation of the basic weighted average common shares outstanding to diluted weighted average common shares outstanding, along with the earnings per share (basic and diluted) for the three months ended March 31, 2021 and 2020 is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, | ​
(dollars and shares in millions, except per share data) |  | 2021 |  | 2020 |
Net income attributable to Amphenol Corporation shareholders | ​ | $ | 329.6 | ​ | $ | 242.1 | ​
Basic weighted average common shares outstanding | ​ |  | 598.5 | ​ |  | 594.9 | ​
Effect of dilutive stock options | ​ |  | 25.6 | ​ |  | 18.0 | ​
Diluted weighted average common shares outstanding | ​ |  | 624.1 | ​ |  | 612.9 | ​
Earnings per share attributable to Amphenol Corporation shareholders: | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic | ​ | $ | 0.55 | ​ | $ | 0.41 | ​
Diluted | ​ | $ | 0.53 | ​ | $ | 0.40 | ​
​ Excluded from the computations above were anti-dilutive common shares (primarily related to outstanding stock options) of 0.1 million and 6.2 million for the three months ended March 31, 2021 and 2020, respectively.

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