(Loss) Earnings Per Common Share

12 Months Ended

Dec. 31, 2020

(Loss) Earnings Per Common Share

(Loss) Earnings Per Common Share

14. (Loss) Earnings Per Common Share

Basic (loss) earnings per common share is computed by dividing net (loss) income attributable to Holdings’ common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per common share is computed by dividing net income attributable to Holdings’ common stockholders by the weighted average number of common shares outstanding during the period and the effect of all dilutive common stock equivalents. In periods where there is a net loss, diluted loss per common share is equal to basic loss per common share, since the effect of including any common stock equivalents would be antidilutive.

For the years ended December 31, 2019 and 2018, the computation of diluted earnings per common share included the effect of 0.6 million and 1.3 million dilutive stock options and restricted stock units, respectively. For the years ended December 31, 2020, 2019 and 2018, the computation of diluted (loss) earnings per common share excluded the effect of 6.3 million, 3.5 million and 0.7 million antidilutive stock options and restricted stock units, respectively. (Loss) earnings per common share for the years ended December 31, 2020, 2019 and 2018 was calculated as follows:

	For the year ended December 31,
(Amounts in thousands, except per share amounts)	2020		2019		2018
Net (loss) income attributable to Six Flags Entertainment Corporation common stockholders	$	(423,380)	$	179,065	$	275,996
Weighted-average common shares outstanding—basic		84,800		84,348		84,100
Effect of dilutive stock options and restricted stock units		—		620		1,345
Weighted-average common shares outstanding—diluted		84,800		84,968		85,445
(Loss) earnings per share—basic	$	(4.99)	$	2.12	$	3.28
(Loss) earnings per share—diluted	$	(4.99)	$	2.11	$	3.23