16. EARNINGS PER COMMON SHARE
Earnings per common share were computed as follows (dollars and shares in millions, except per share amounts): | | | | | | | | | | | | | | Year Ended December 31, | | 2019 | | 2018 | | 2017 | Earnings per common share | | | | | | Net income attributable to Valero stockholders | $ | 2,422 |
|
| $ | 3,122 |
|
| $ | 4,065 |
| Less: Income allocated to participating securities | 7 |
| | 9 |
| | 14 |
| Net income available to common shareholders | $ | 2,415 |
| | $ | 3,113 |
| | $ | 4,051 |
| | | | | | | Weighted-average common shares outstanding | 413 |
| | 426 |
| | 442 |
| | | | | | | Earnings per common share | $ | 5.84 |
| | $ | 7.30 |
| | $ | 9.17 |
| | | | | | | Earnings per common share – assuming dilution | | | | | | Net income attributable to Valero stockholders | $ | 2,422 |
| | $ | 3,122 |
| | $ | 4,065 |
| | | | | | | Weighted-average common shares outstanding | 413 |
| | 426 |
| | 442 |
| Effect of dilutive securities | 1 |
| | 2 |
| | 2 |
| Weighted-average common shares outstanding – assuming dilution | 414 |
| | 428 |
| | 444 |
| | | | | | | Earnings per common share – assuming dilution | $ | 5.84 |
| | $ | 7.29 |
| | $ | 9.16 |
|
Participating securities include restricted stock and performance awards granted under our 2011 Omnibus Stock Incentive Plan. Dilutive securities include participating securities as well as outstanding stock options granted under our 2011 Omnibus Stock Incentive Plan.
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