EARNINGS PER SHARE

12 Months Ended

Dec. 31, 2022

Basic earnings per share is computed by dividing net income attributable to common stockholders by the weighted-average number of common shares outstanding during the periods. Diluted earnings per share is computed by dividing net income attributable to common stockholders by the weighted-average common shares and common share equivalents outstanding during the periods. The dilutive effect of common share equivalents is considered in the diluted earnings per share computation using the treasury stock method, which includes consideration of equity awards.

The following table sets forth the details of basic and diluted earnings per share:


	Year Ended December 31,
	2022		2021		2020
(In thousands, except per share data)
Net income attributable to WESCO International, Inc.	$	860,471	$	465,382	$	100,560
Less: Preferred stock dividends	57,408		57,408		30,139
Net income attributable to common stockholders	$	803,063	$	407,974	$	70,421
Weighted-average common shares outstanding used in computing basic earnings per share	50,734		50,300		46,174
Common shares issuable upon exercise of dilutive equity awards	1,661		1,730		451
Weighted-average common shares outstanding and common share equivalents used in computing diluted earnings per share	52,395		52,030		46,625
Earnings per share attributable to common stockholders
Basic	$	15.83	$	8.11	$	1.53
Diluted	$	15.33	$	7.84	$	1.51

The computation of diluted earnings per share attributable to common stockholders excludes stock-based awards that would have had an antidilutive effect on earnings per share. For the year ended December 31, 2022, there were 87,490 antidilutive shares. For the year ended December 31, 2021, there were no antidilutive stock-based awards, and for the year ended December 31, 2020, there were approximately 1.8 million antidilutive shares.