Earnings Per Share

6 Months Ended

Jun. 30, 2020

Basic earnings per share is computed by dividing net income by the weighted average number of shares of all classes of CME Group common stock outstanding for each reporting period. Diluted earnings per share reflects the increase in shares using the treasury stock method to reflect the impact of an equivalent number of shares of common stock if stock options were exercised and restricted stock awards were converted into common stock. Anti-dilutive stock awards were as follows for the periods presented:


	Quarter Ended June 30,			Six Months Ended June 30,
(in thousands)	2020	2019	2020	2019

Stock awards	75	55	76	55
Total	75	55	76	55

The following table presents the earnings per share calculation for the periods presented:


	Quarter Ended June 30,						Six Months Ended June 30,
	2020		2019		2020		2019
Net Income Attributable to CME Group (in millions)	$	503.3	$	513.8	$	1,269.5	$	1,010.7
Weighted Average Number of Common Shares (in thousands):
Basic	357,691		357,060		357,607		356,973
Effect of stock options, restricted stock and performance shares	766		1,095		846		1,130
Diluted	358,457		358,155		358,453		358,103
Earnings per Common Share Attributable to CME Group:
Basic	$	1.41	$	1.44	$	3.55	$	2.83
Diluted	1.40		1.43		3.54		2.82