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EARNINGS PER SHARE CALCULATION
 6 Months Ended
Apr. 29, 2023
Earnings Per Share [Abstract]  
EARNINGS PER SHARE CALCULATION EARNINGS PER SHARE CALCULATION
Basic net income per common share (“Basic EPS”) is computed using the weighted average number of common shares outstanding. Diluted net income per potential common share (“Diluted EPS”) is computed using the weighted average number of the following, in each case, to the extent that the effect is not anti-dilutive: (i) common shares outstanding; (ii) shares issuable upon vesting of stock unit awards; and (iii) shares issuable under Ciena’s employee stock purchase plan and upon exercise of outstanding stock options, using the treasury stock method.
The following table presents the calculation of Basic and Diluted EPS for the periods indicated (in thousands, except per share amounts):
Quarter EndedSix Months Ended
 April 29,April 30,April 29,April 30,
2023202220232022
Net income$57,654 $38,922 $133,895 $84,745 
Basic weighted average shares outstanding149,616 152,197 149,351 153,179 
Effect of dilutive potential common shares531 1,147 501 1,401 
Diluted weighted average shares150,147 153,344 149,852 154,580 
Basic EPS$0.39 $0.26 $0.90 $0.55 
Diluted EPS$0.38 $0.25 $0.89 $0.55 
Antidilutive employee share-based awards, excluded1,550 1,392 2,159 1,077