The following table sets forth basic and diluted net income per common share computational data (shares in thousands, except per share data):


	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023


Net income attributable to American Tower Corporation common stockholders	$	900.3	$	475.7	$	1,817.7	$	811.5
Basic weighted average common shares outstanding	467,038		466,087		466,778		465,915
Dilutive securities	743		892		1,015		1,024
Diluted weighted average common shares outstanding	467,781		466,979		467,793		466,939
Basic net income attributable to American Tower Corporation common stockholders per common share	$	1.93	$	1.02	$	3.89	$	1.74
Diluted net income attributable to American Tower Corporation common stockholders per common share	$	1.92	$	1.02	$	3.89	$	1.74

Shares Excluded From Dilutive Effect—The following shares were not included in the computation of diluted earnings per share because the effect would be anti-dilutive (in thousands, on a weighted average basis):