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Earnings Per Share | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share |
Earnings Per Share | 7. Earnings Per Share ​ Basic earnings per share is computed using net income attributable to Penske Automotive Group common stockholders and the number of weighted average shares of voting common stock outstanding, including outstanding unvested equity awards which contain rights to non-forfeitable dividends. Diluted earnings per share is computed using net income attributable to Penske Automotive Group common stockholders and the number of weighted average shares of voting common stock outstanding, adjusted for any dilutive effects. A reconciliation of the number of shares used in the calculation of basic and diluted earnings per share for the three months ended March 31, 2021, and 2020 follows: ​
​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended
​ | ​ | March 31,
​ |  | 2021 |  | 2020
Weighted average number of common shares outstanding | ​ | 80,608,996 |  | 81,053,404
Effect of non-participatory equity compensation | ​ | 40,000 |  | 40,000
Weighted average number of common shares outstanding, including effect of dilutive securities | ​ | 80,648,996 |  | 81,093,404
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