What is the current annual total debt of CIEN?

As of today, CIEN annual total debt is $1.58B

What is 1-year change in CIEN annual total debt?

CIEN annual total debt is down -3.07% year-over-year

What is 3-year change in CIEN annual total debt?

CIEN annual total debt is up +33.37% over the past 3 years

How far is CIEN annual total debt from its all-time high?

CIEN annual total debt is currently -4.52% below its historical high of $1.66B set on October 31, 2023

How does CIEN annual total debt rank versus sector peers?

CIEN annual total debt is higher than 82.99% of companies in Technology sector

When is CIEN next annual earnings release?

The next annual earnings release for CIEN is on December 10, 2026

What is the current quarterly total debt of CIEN?

As of today, CIEN quarterly total debt is $3.29B

What is CIEN quarterly total debt most recent change?

CIEN quarterly total debt was up +107.89% on July 1, 2026

What is 1-year change in CIEN quarterly total debt?

CIEN quarterly total debt is up +107.02% year-over-year

How far is CIEN quarterly total debt from its all-time high?

CIEN quarterly total debt is currently at its all-time high

How does CIEN quarterly total debt rank versus sector peers?

CIEN quarterly total debt is higher than 87.20% of companies in Technology sector

When is CIEN next earnings release?

The next earnings release for CIEN is on December 10, 2026

CIEN Total Debt History & Chart Since 1996

Annual Total Debt

$1.58B$50.04M-3.07%

October 1, 2025

Summary

Current Value: As of today, CIEN annual total debt is $1.58B, down -3.07% on October 1, 2025
Historical Performance: CIEN annual total debt is up +33.37% over the past 3 years, up +91.06% over the past 5 years
All-Time High Comparison: CIEN annual total debt is currently -4.52% below its historical high of $1.66B set on October 31, 2023
3-Year Low Comparison: CIEN annual total debt is +33.37% above its 3-year low of $1.19B reached on an earlier date
Sector Comparison: CIEN annual total debt is higher than 82.99% of companies in Technology sector

Total Debt Chart

beforeafter

Performance

CIEN Performance
Metric	Date	Value	1Y	3Y	5Y	15Y
Annual Total Debt	Oct 1, 25	$1.58B	-3.1%	+33.4%	+91.1%	+9.7%
Quarterly Total Debt	Jul 1, 26	$3.29B	+107.0%	+103.5%	+302.9%	+127.8%
Price	Sep 14, 26	$319.64	+143.5%	+551.3%	+503.6%	+2189.7%
	Oct 1, 25	$1.56B	-2.8%	+34.6%	+94.8%	+7.9%
	Oct 1, 25	$25.54M	-16.4%	-13.8%	-11.3%	+100.0%
	Oct 1, 25	$3.14B	+11.0%	+33.0%	+87.6%	+60.1%
	Oct 1, 25	$2.73B	-3.1%	+0.6%	+8.8%	+1613.4%
Annual Debt To Equity	Oct 1, 25	0.58	0.0%	+31.8%	+75.8%	-93.6%

Total Debt Highs

CIEN Annual Total Debt Highs Comparison
Period	High	Date	Current
3Y	$1.66B	Oct 31, 23	-4.5%
5Y	$1.66B	Oct 31, 23	-4.5%
All	$1.66B	Oct 31, 23	-4.5%

Total Debt Lows

CIEN Annual Total Debt Lows Comparison
Period	Low	Date	Current
3Y	$1.19B	N/A	+33.4%
5Y	$803.68M	Oct 30, 21	+96.9%
All	$0.00	Oct 1, 96	N/A

Total Debt History

Year	Value	Change
2025	$1.58B	-3.1%
2024	$1.63B	-1.5%
2023	$1.66B	+39.7%
2022	$1.19B	+47.6%
2021	$803.68M	-3.0%
2020	$828.14M	+9.6%
2019	$755.45M	-1.3%
2018	$765.24M	-24.5%
2017	$1.01B	-20.9%
2016	$1.28B	-1.0%
2015	$1.29B	-12.5%
2014	$1.48B	+21.9%
2013	$1.21B	-15.9%
2012	$1.44B	-0.0%
2011	$1.44B	-0.0%

Year	Value	Change
2010	$1.44B	+80.8%
2009	$798.00M	0.0%
2008	$798.00M	-40.5%
2007	$1.34B	+59.4%
2006	$842.26M	+29.8%
2005	$648.75M	-6.0%
2004	$690.00M	-5.5%
2003	$730.43M	-13.4%
2002	$843.62M	-2.3%
2001	$863.88M	>+9,900.0%
2000	$0.00	0.0%
1999	$0.00	0.0%
1998	$0.00	0.0%
1997	$0.00	0.0%
1996	$0.00	-

FAQ

What is the current annual total debt of CIEN?: As of today, CIEN annual total debt is $1.58B
What is 1-year change in CIEN annual total debt?: CIEN annual total debt is down -3.07% year-over-year
What is 3-year change in CIEN annual total debt?: CIEN annual total debt is up +33.37% over the past 3 years
How far is CIEN annual total debt from its all-time high?: CIEN annual total debt is currently -4.52% below its historical high of $1.66B set on October 31, 2023
How does CIEN annual total debt rank versus sector peers?: CIEN annual total debt is higher than 82.99% of companies in Technology sector
When is CIEN next annual earnings release?: The next annual earnings release for CIEN is on December 10, 2026

Total Debt Formula

Total Debt = +

Quarterly Total Debt

$3.29B$1.71B+107.89%

July 1, 2026

Summary

Current Value: As of today, CIEN quarterly total debt is $3.29B, up +107.89% on July 1, 2026
Historical Performance: CIEN quarterly total debt is up +107.02% year-over-year, up +103.51% over the past 3 years
All-Time High Comparison: CIEN quarterly total debt is currently at its all-time high
3-Year Low Comparison: CIEN quarterly total debt is +108.17% above its 3-year low of $1.58B reached on January 1, 2025
Sector Comparison: CIEN quarterly total debt is higher than 87.20% of companies in Technology sector

Performance

CIEN Performance
Metric	Date	Value	3M	1Y	3Y	5Y
Quarterly Total Debt	Jul 1, 26	$3.29B	+107.9%	+107.0%	+103.5%	+302.9%
Annual Total Debt	Oct 1, 25	$1.58B	–	-3.1%	+33.4%	+91.1%
Price	Sep 14, 26	$319.64	-28.3%	+143.5%	+551.3%	+503.6%
	Jul 1, 26	$3.27B	+110.7%	+109.4%	+106.6%	+315.7%
	Jul 1, 26	$17.40M	-40.1%	-33.8%	-47.2%	-40.8%
	Jul 1, 26	$4.94B	+57.0%	+66.8%	+78.0%	+185.3%
	Jul 1, 26	$3.06B	+5.7%	+9.7%	+3.7%	+4.5%
Quarterly Debt To Equity	Jul 1, 26	1.08	+96.4%	+89.5%	+96.4%	+285.7%

Quarterly Total Debt Highs

CIEN Quarterly Total Debt Highs Comparison
Period	High	Date	Current
1Y	$3.29B	Jul 1, 26	at high
3Y	$3.29B	Jul 1, 26	at high
5Y	$3.29B	Jul 1, 26	at high
All	$3.29B	Jul 1, 26	at high

Quarterly Total Debt Lows

CIEN Quarterly Total Debt Lows Comparison
Period	Low	Date	Current
1Y	$1.58B	Apr 1, 26	+107.9%
3Y	$1.58B	Jan 1, 25	+108.2%
5Y	$803.68M	Oct 30, 21	+308.9%
All	$0.00	Oct 31, 97	N/A

Quarterly Total Debt History

Month	Value	Change
Jul 2026	$3.29B	+107.9%
Apr 2026	$1.58B	-0.5%
Jan 2026	$1.59B	-2.3%
Oct 2025	$1.63B	+2.4%
Jul 2025	$1.59B	-0.1%
Apr 2025	$1.59B	+0.6%
Jan 2025	$1.58B	-3.3%
Oct 2024	$1.63B	+2.2%
Jul 2024	$1.60B	-0.3%
Apr 2024	$1.60B	-0.4%
Jan 2024	$1.61B	-2.9%
Oct 2023	$1.66B	+2.6%
Jul 2023	$1.61B	-0.3%
Apr 2023	$1.62B	-0.5%
Jan 2023	$1.63B	+37.2%
Oct 2022	$1.19B	+4.5%
Jul 2022	$1.14B	+0.3%
Apr 2022	$1.13B	-0.1%
Jan 2022	$1.13B	+41.1%
Oct 2021	$803.68M	-1.5%
Jul 2021	$815.64M	-0.7%
Apr 2021	$821.72M	-0.4%
Jan 2021	$825.19M	-0.4%
Oct 2020	$828.14M	+0.9%
Jul 2020	$820.95M	+0.4%
Apr 2020	$817.63M	-1.1%
Jan 2020	$826.57M	+9.4%
Oct 2019	$755.45M	+9.2%
Jul 2019	$691.72M	-0.2%
Apr 2019	$693.44M	-0.3%
Jan 2019	$695.25M	-9.1%
Oct 2018	$765.24M	-18.9%
Jul 2018	$943.95M	+0.1%
Apr 2018	$942.57M	+0.1%
Jan 2018	$941.29M	-7.1%
Oct 2017	$1.01B	-0.2%
Jul 2017	$1.02B	-12.7%
Apr 2017	$1.16B	-5.9%
Jan 2017	$1.24B	-4.1%
Oct 2016	$1.29B	-14.6%
Jul 2016	$1.51B	-1.9%
Apr 2016	$1.54B	+20.4%
Jan 2016	$1.28B	-1.1%
Oct 2015	$1.29B	-0.5%
Jul 2015	$1.30B	+0.3%
Apr 2015	$1.30B	-12.1%
Jan 2015	$1.47B	-0.2%
Oct 2014	$1.48B	+0.9%
Jul 2014	$1.46B	+20.6%
Apr 2014	$1.21B	+0.1%
Jan 2014	$1.21B	+0.1%
Oct 2013	$1.21B	+0.1%
Jul 2013	$1.21B	+0.1%
Apr 2013	$1.21B	-15.1%
Jan 2013	$1.42B	-1.2%
Oct 2012	$1.44B	-0.0%
Jul 2012	$1.44B	-0.0%
Apr 2012	$1.44B	-0.0%
Jan 2012	$1.44B	-0.0%
Oct 2011	$1.44B	-0.0%

Month	Value	Change
Jul 2011	$1.44B	-0.0%
Apr 2011	$1.44B	-0.0%
Jan 2011	$1.44B	-0.0%
Oct 2010	$1.44B	+22.8%
Jul 2010	$1.17B	-0.0%
Apr 2010	$1.17B	+47.2%
Jan 2010	$798.00M	0.0%
Oct 2009	$798.00M	0.0%
Jul 2009	$798.00M	0.0%
Apr 2009	$798.00M	0.0%
Jan 2009	$798.00M	0.0%
Oct 2008	$798.00M	-0.3%
Jul 2008	$800.00M	0.0%
Apr 2008	$800.00M	0.0%
Jan 2008	$800.00M	-40.4%
Oct 2007	$1.34B	0.0%
Jul 2007	$1.34B	+59.4%
Apr 2007	$842.26M	0.0%
Jan 2007	$842.26M	0.0%
Oct 2006	$842.26M	0.0%
Jul 2006	$842.26M	0.0%
Apr 2006	$842.26M	+55.3%
Jan 2006	$542.26M	-16.4%
Oct 2005	$648.75M	0.0%
Jul 2005	$648.75M	-6.0%
Apr 2005	$690.00M	0.0%
Jan 2005	$690.00M	0.0%
Oct 2004	$690.00M	0.0%
Jul 2004	$690.00M	0.0%
Apr 2004	$690.00M	0.0%
Jan 2004	$690.00M	-5.5%
Oct 2003	$730.43M	+0.1%
Jul 2003	$729.51M	-0.3%
Apr 2003	$731.60M	+0.6%
Jan 2003	$727.53M	-13.8%
Oct 2002	$843.62M	-7.4%
Jul 2002	$910.59M	+32.0%
Apr 2002	$690.00M	-20.4%
Jan 2002	$866.53M	+0.3%
Oct 2001	$863.88M	-0.3%
Jul 2001	$866.83M	+0.3%
Apr 2001	$864.19M	>+9,900.0%
Jan 2001	$0.00	0.0%
Oct 2000	$0.00	0.0%
Jul 2000	$0.00	0.0%
Apr 2000	$0.00	0.0%
Jan 2000	$0.00	0.0%
Oct 1999	$0.00	0.0%
Jul 1999	$0.00	0.0%
Apr 1999	$0.00	0.0%
Jan 1999	$0.00	0.0%
Oct 1998	$0.00	0.0%
Jul 1998	$0.00	0.0%
Apr 1998	$0.00	0.0%
Jan 1998	$0.00	0.0%
Oct 1997	$0.00	-100.0%
Jul 1997	$2.40M	-11.1%
Apr 1997	$2.70M	-22.9%
Jan 1997	$3.50M	-

FAQ

What is the current quarterly total debt of CIEN?: As of today, CIEN quarterly total debt is $3.29B
What is CIEN quarterly total debt most recent change?: CIEN quarterly total debt was up +107.89% on July 1, 2026
What is 1-year change in CIEN quarterly total debt?: CIEN quarterly total debt is up +107.02% year-over-year
How far is CIEN quarterly total debt from its all-time high?: CIEN quarterly total debt is currently at its all-time high
How does CIEN quarterly total debt rank versus sector peers?: CIEN quarterly total debt is higher than 87.20% of companies in Technology sector
When is CIEN next earnings release?: The next earnings release for CIEN is on December 10, 2026

Total Debt Formula

Total Debt = +

Data Sources & References

CIEN Official Website www.ciena.com
CIEN Profile on Yahoo Finance finance.yahoo.com/quote/CIEN
CIEN Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/cien