FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Aug. 02, 2025

Schedule of the Fair Value of Assets and Liabilities Recorded on a Recurring Basis

As of the dates indicated, the following tables summarize the assets and liabilities that are recorded at fair value on a recurring basis (in thousands):


	August 2, 2025
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	658,774	$	—	$	—	$	658,774
Bond mutual fund	116,537		—		—		116,537
Time deposits	92,549		—		—		92,549
Deferred compensation plan assets	19,359		—		—		19,359
U.S. government obligations	—		208,468		—		208,468
Corporate debt securities	—		121,126		—		121,126
Foreign currency forward contracts	—		5,685		—		5,685
Interest rate swaps	—		671		—		671

Total assets measured at fair value	$	887,219	$	335,950	$	—	$	1,223,169

Liabilities:
Foreign currency forward contracts	$	—	$	3,228	$	—	$	3,228
Interest rate swaps	—		1,220		—		1,220

Total liabilities measured at fair value	$	—	$	4,448	$	—	$	4,448


	November 2, 2024
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	636,097	$	—	$	—	$	636,097
Bond mutual fund	112,703		—		—		112,703
Time deposits	92,804		—		—		92,804
Deferred compensation plan assets	16,519		—		—		16,519
U.S. government obligations	—		286,181		—		286,181
Corporate debt securities	—		111,143		—		111,143
Foreign currency forward contracts	—		2,149		—		2,149
Interest rate swaps	—		11,777		—		11,777

Total assets measured at fair value	$	858,123	$	411,250	$	—	$	1,269,373

Liabilities:
Foreign currency forward contracts	$	—	$	9,155	$	—	$	9,155


Total liabilities measured at fair value	$	—	$	9,155	$	—	$	9,155

Schedule of Assets and Liabilities as Presented on Ciena's Condensed Consolidated Balance Sheets

As of the dates indicated, the assets and liabilities above are presented on Ciena’s Condensed Consolidated Balance Sheets as follows (in thousands):


	August 2, 2025
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	862,021	$	656	$	—	$	862,677
Short-term investments	5,839		264,541		—		270,380
Prepaid expenses and other	—		5,685		—		5,685
Long-term investments	—		64,397		—		64,397
Other long-term assets	19,359		671		—		20,030
Total assets measured at fair value	$	887,219	$	335,950	$	—	$	1,223,169

Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	3,228	$	—	$	3,228
Other long-term obligations	—		1,220		—		1,220
Total liabilities measured at fair value	$	—	$	4,448	$	—	$	4,448


	November 2, 2024
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	832,239	$	9,426	$	—	$	841,665
Short-term investments	9,365		306,978		—		316,343
Prepaid expenses and other	—		2,149		—		2,149
Long-term investments	—		80,920		—		80,920
Other long-term assets	16,519		11,777		—		28,296
Total assets measured at fair value	$	858,123	$	411,250	$	—	$	1,269,373

Liabilities:
Accrued liabilities and other short-term obligations	$	—	$	9,155	$	—	$	9,155


Total liabilities measured at fair value	$	—	$	9,155	$	—	$	9,155