Income Per Share Information

12 Months Ended

Dec. 31, 2019

17.	Income Per Share Information

The following is a calculation of income per share (dollars in thousands, except share data):

	Year Ended December 31,
		2019		2018		2017
Basic Income Per Share
Net income attributable to CBRE Group, Inc. shareholders	$	1,282,357	$	1,063,219	$	697,109
Weighted average shares outstanding for basic income per share		335,795,654		339,321,056		337,658,017
Basic income per share attributable to CBRE Group, Inc. shareholders	$	3.82	$	3.13	$	2.06
Diluted Income Per Share
Net income attributable to CBRE Group, Inc. shareholders	$	1,282,357	$	1,063,219	$	697,109
Weighted average shares outstanding for basic income per share		335,795,654		339,321,056		337,658,017
Dilutive effect of contingently issuable shares		4,727,217		3,801,293		3,121,987
Dilutive effect of stock options		—		392		3,552
Weighted average shares outstanding for diluted income per share		340,522,871		343,122,741		340,783,556
Diluted income per share attributable to CBRE Group, Inc. shareholders	$	3.77	$	3.10	$	2.05

For the years ended December 31, 2019, 2018 and 2017, 374,555, 259,274 and 621,805, respectively, of contingently issuable shares were excluded from the computation of diluted income per share because their inclusion would have had an anti-dilutive effect.