Earnings Per Share

12 Months Ended

Dec. 31, 2022

Earnings per Share

Basic earnings per share is computed using the weighted-average number of outstanding shares of common stock during the period. Diluted earnings per share is computed using the weighted-average number of outstanding shares of common stock and, when dilutive, potential common shares outstanding during the period. Potential common shares consist of incremental shares issuable upon the assumed exercise of stock options. The computation of earnings per share is as follows:


	Year ended December 31,
	2022		2021		2020
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	4,491,924	$	5,116,228	$	2,761,395
Shares used in computation:
Weighted-average common shares outstanding	444,698		443,155		440,922
Basic earnings per share	$	10.10	$	11.55	$	6.26
Diluted earnings per share:
Net income	$	4,491,924	$	5,116,228	$	2,761,395
Shares used in computation:
Weighted-average common shares outstanding	444,698		443,155		440,922
Employee stock options	6,592		12,217		13,286
Weighted-average number of shares	451,290		455,372		454,208
Diluted earnings per share	$	9.95	$	11.24	$	6.08

Employee stock options with exercise prices greater than the average market price of the common stock were excluded from the diluted calculation as their inclusion would have been anti-dilutive. The following table summarizes the potential common shares excluded from the diluted calculation:


	Year ended December 31,
	2022	2021	2020
	(in thousands)
Employee stock options	6,790	348	484