Earnings Per Common Share

12 Months Ended

Dec. 31, 2015

Basic earnings per common share is computed by dividing net 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. These computations have been retroactively adjusted to reflect the two-for-one stock split in June 2013 as described in Note 12.

For the years ended December 31, 2015, 2014 and 2013, the computation of diluted earnings per share included the effect of 4.4 million, 3.7 million and 3.4 million dilutive stock options and restricted stock units, respectively. For the years ended December 31, 2015, 2014 and 2013, the computation of diluted earnings per share excluded the effect of 0.2 million and 1.8 million antidilutive stock options and restricted stock units and 1.2 million antidilutive stock options, respectively. Earnings per common share for the years ended December 31, 2015, 2014 and 2013 was calculated as follows:



	For the year ended December 31,
(Amounts in thousands, except per share amounts)	2015		2014		2013
Net income attributable to Six Flags Entertainment Corporation common stockholders	$	154,690	$	76,022	$	118,552

Weighted-average common shares outstanding—basic	93,580		94,477		96,940
Effect of dilutive stock options and restricted stock units	4,401		3,662		3,431
Weighted-average common shares outstanding—diluted	97,981		98,139		100,371

Earnings per share—basic	$	1.65	$	0.80	$	1.22
Earnings per share—diluted	$	1.58	$	0.77	$	1.18