Earnings Per Share

12 Months Ended

Dec. 31, 2019

Earnings Per Share

Earnings Per Share

Note 8—Earnings Per Share

Basic earnings per share (“EPS”) is computed by dividing net income attributable to Amphenol Corporation by the weighted average number of common shares outstanding. Diluted EPS is computed by dividing net income attributable to Amphenol Corporation by the weighted average number of common shares and dilutive common shares outstanding, which relates to stock options. A reconciliation of the basic weighted average common shares outstanding to diluted weighted average common shares outstanding for the years ended December 31, 2019, 2018 and 2017 is as follows:

(dollars and shares in millions, except per share data)	2019		2018		2017
Net income attributable to Amphenol Corporation shareholders	$	1,155.0	$	1,205.0	$	650.5
Basic weighted average common shares outstanding		297.5		301.2		305.7
Effect of dilutive stock options		10.4		11.4		10.8
Diluted weighted average common shares outstanding		307.9		312.6		316.5
Earnings per share attributable to Amphenol Corporation shareholders:
Basic	$	3.88	$	4.00	$	2.13
Diluted	$	3.75	$	3.85	$	2.06

Excluded from the computations above were anti-dilutive common shares (primarily related to outstanding stock options) of 7.1 million, 3.3 million and 1.6 million for the years ended December 31, 2019, 2018 and 2017, respectively.