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EARNINGS (LOSS) PER SHARE CALCULATION | 6 Months Ended
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Apr. 27, 2024
Earnings Per Share [Abstract] |
EARNINGS (LOSS) PER SHARE CALCULATION | EARNINGS (LOSS) PER SHARE CALCULATION Basic net income (loss) per common share (“Basic EPS”) is computed using the weighted average number of common shares outstanding. Diluted net income (loss) 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 Ended |  | Six Months Ended
| April 27, |  | April 29, |  | April 27, |  | April 29,
| 2024 |  | 2023 |  | 2024 |  | 2023
Net income (loss) | $ | (16,849) |  |  | $ | 57,654 |  |  | $ | 32,698 |  |  | $ | 133,895 |
Basic weighted average shares outstanding | 144,914 |  |  | 149,616 |  |  | 145,104 |  |  | 149,351 |
Effect of dilutive potential common shares | — |  |  | 531 |  |  | 955 |  |  | 501 |
Diluted weighted average shares | 144,914 |  |  | 150,147 |  |  | 146,059 |  |  | 149,852 |
Basic EPS | $ | (0.12) |  |  | $ | 0.39 |  |  | $ | 0.23 |  |  | $ | 0.90 |
Diluted EPS | $ | (0.12) |  |  | $ | 0.38 |  |  | $ | 0.22 |  |  | $ | 0.89 |
Antidilutive employee share-based awards, excluded | 2,030 |  |  | 1,550 |  |  | 1,584 |  |  | 2,159 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//260/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-3 + Details
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