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 outstanding shares of common stock during the period. Potential outstanding shares of common stock are calculated using the treasury-stock method and consist of incremental shares issuable upon the assumed exercise of stock options and vesting of time-based and performance-based restricted stock units. The computation of earnings per share is as follows:


	Three Months Ended
	March 31, 2026		March 31, 2025
	(in thousands, except per share data)
Basic earnings per share:
Net income	$	5,282,791	$	2,890,351
Shares used in computation:
Weighted-average shares of common stock outstanding	4,222,787		4,272,695
Basic earnings per share	$	1.25	$	0.68

Diluted earnings per share:
Net income	$	5,282,791	$	2,890,351
Shares used in computation:
Weighted-average shares of common stock outstanding	4,222,787		4,272,695
Effect of dilutive stock-based awards	75,650		96,928
Weighted-average number of shares	4,298,437		4,369,623
Diluted earnings per share	$	1.23	$	0.66

The following table summarizes the potential shares of common stock excluded from the diluted calculation as their inclusion would have been anti-dilutive: