Debt to Equity Ratio: 0.55
Is the debt to equity ratio high or low?
The debt to equity ratio of 0.55 is in line with its 5-year average of 0.50, near the high end of its 5-year range (0.26–0.58).
As of Thursday, June 25, 2026. 3.68% below its 12-month average of 0.57.
CIEN Debt to Equity Ratio
Reported quarterly debt to equity ratio; no daily interpolation.
CIEN Average Debt to Equity Ratio Chart
CIEN Current vs Average Debt to Equity Ratio Chart
CIEN Debt to Equity Ratio Metrics
DEBT TO EQUITY RATIO
0.55
DEBT TO EQUITY RATIO AVG TTM
0.57
DEBT TO EQUITY RATIO AVG 3Y
0.56
DEBT TO EQUITY RATIO AVG 5Y
0.50
DEBT TO EQUITY RATIO AVG 10Y
0.45
DEBT TO EQUITY RATIO AVG 15Y
0.45
DEBT TO EQUITY RATIO AVG 20Y
0.84
CURRENT VS TTM AVG
-3.68%
CURRENT VS 3Y AVG
-3.11%
CURRENT VS 5Y AVG
+8.31%
CURRENT VS 10Y AVG
+21.59%
CURRENT VS 15Y AVG
+21.59%
CURRENT VS 20Y AVG
-35.25%
CIEN Competitors' Debt to Equity Ratio
| NAME | MARKET CAP | DEBT TO EQUITY RATIO | TTM | 3Y | 5Y |
|---|---|---|---|---|---|
| Ciena Corporation (CIEN) | $65.61B | 0.55 | 0.57 | 0.56 | 0.50 |
| Lumentum Holdings Inc. (LITE)vs › | $65.55B | 2.30 | 2.48 | 2.03 | 1.75 |
| Motorola Solutions, Inc. (MSI)vs › | $66.50B | 4.05 | 3.95 | 18.35 | 18.35 |
| Hewlett Packard Enterprise Company (HPE)vs › | $64.58B | 0.98 | 0.89 | 0.78 | 0.82 |
| Teradyne, Inc. (TER)vs › | $66.87B | 0.12 | 0.08 | 0.08 | 0.10 |
| STMicroelectronics N.V. (STM)vs › | $63.85B | 0.12 | 0.15 | 0.18 | 0.23 |
| Astera Labs, Inc. Common Stock (ALAB)vs › | $68.55B | 0.03 | 0.01 | 0.02 | 0.02 |
| United Microelectronics Corporation (UMC)vs › | $69.87B | 0.16 | 0.17 | 0.17 | 0.19 |
| Monolithic Power Systems, Inc. (MPWR)vs › | $70.50B | 0.01 | 0.01 | 0.01 | 0.00 |
| Keysight Technologies, Inc. (KEYS)vs › | $60.04B | 0.51 | 0.46 | 0.46 | 0.49 |
Financial Health
Debt/Equity
0.55
Current Ratio
2.73
Debt to Equity Ratio Formula & Definition
Debt to Equity measures financial leverage by comparing total debt to shareholders' equity.
Expanded definitions: Investopedia, Wikipedia, Corporate Finance Institute
Debt to Equity Ratio FAQ
- What is the debt to equity ratio for Ciena Corporation (CIEN)?
- The debt to equity ratio for CIEN stock is 0.55.
- Is Ciena Corporation's debt to equity ratio high or low?
- The debt to equity ratio of 0.55 is in line with its 5-year average of 0.50, near the high end of its 5-year range (0.26–0.58).
- What is the TTM average debt to equity ratio for Ciena Corporation (CIEN)?
- The TTM average debt to equity ratio for CIEN stock is 0.57.
- What is the 3Y average debt to equity ratio for Ciena Corporation (CIEN)?
- The 3Y average debt to equity ratio for CIEN stock is 0.56.
- What is the 5Y average debt to equity ratio for Ciena Corporation (CIEN)?
- The 5Y average debt to equity ratio for CIEN stock is 0.50.
- What is the 10Y average debt to equity ratio for Ciena Corporation (CIEN)?
- The 10Y average debt to equity ratio for CIEN stock is 0.45.
- What is the 15Y average debt to equity ratio for Ciena Corporation (CIEN)?
- The 15Y average debt to equity ratio for CIEN stock is 0.45.
- What is the 20Y average debt to equity ratio for Ciena Corporation (CIEN)?
- The 20Y average debt to equity ratio for CIEN stock is 0.84.
CIEN Debt to Equity Ratio History
| DATE | DEBT TO EQUITY RATIO |
|---|---|
| 2026-05-02 | 0.55 |
| 2026-01-31 | 0.57 |
| 2025-11-01 | 0.58 |
| 2025-08-02 | 0.57 |
| 2025-05-03 | 0.57 |
| 2025-02-01 | 0.57 |
| 2024-11-02 | 0.58 |
| 2024-07-27 | 0.55 |
| 2024-04-27 | 0.56 |
| 2024-01-27 | 0.55 |
| 2023-10-31 | 0.58 |
| 2023-07-29 | 0.55 |
| 2023-04-29 | 0.56 |
| 2023-01-28 | 0.57 |
| 2022-10-31 | 0.44 |
| 2022-07-30 | 0.43 |
| 2022-04-30 | 0.41 |
| 2022-01-29 | 0.40 |
| 2021-10-31 | 0.27 |
| 2021-07-31 | 0.26 |
| 2021-05-01 | 0.28 |
| 2021-01-30 | 0.29 |
| 2020-10-31 | 0.33 |
| 2020-08-01 | 0.31 |
| 2020-05-02 | 0.34 |
| 2020-01-31 | 0.35 |
| 2019-10-31 | 0.35 |
| 2019-07-31 | 0.33 |
| 2019-04-30 | 0.33 |
| 2019-01-31 | 0.34 |
| 2018-10-31 | 0.36 |
| 2018-07-31 | 0.53 |
| 2018-04-30 | 0.54 |
| 2018-01-31 | 0.53 |
| 2017-10-31 | 0.44 |
| 2017-07-31 | 1.08 |
| 2017-04-30 | 1.37 |
| 2017-01-31 | 1.55 |
| 2016-10-31 | 1.67 |
| 2016-07-31 | 2.09 |
| 2016-04-30 | 2.26 |
| 2016-01-31 | 2.01 |
| 2015-10-31 | 2.05 |
| 2015-08-01 | 7.31 |
| 2015-05-02 | 9.22 |
| 2015-01-31 | -16.55 |
| 2014-10-31 | -21.04 |
| 2014-07-31 | -32.43 |
| 2014-04-30 | -15.02 |
| 2014-01-31 | -13.97 |
| 2013-10-31 | -14.66 |
| 2013-07-31 | -14.56 |
| 2013-04-30 | -12.35 |
| 2013-01-31 | -18.12 |
| 2012-10-31 | -16.21 |
| 2012-07-31 | -23.93 |
| 2012-04-30 | -35.12 |
| 2012-01-31 | -68.34 |
| 2011-10-31 | 103.97 |
| 2011-07-31 | 50.49 |
| 2011-04-30 | 29.41 |
| 2011-01-31 | 15.36 |
| 2010-10-31 | 9.16 |
| 2010-07-31 | 5.16 |
| 2010-04-30 | 3.63 |
| 2010-01-31 | 1.99 |
| 2009-10-31 | 1.77 |
| 2009-07-31 | 1.70 |
| 2009-04-30 | 1.65 |
| 2009-01-31 | 0.81 |
| 2008-10-31 | 0.80 |
| 2008-07-31 | 0.79 |
| 2008-04-30 | 0.80 |
| 2008-01-31 | 0.90 |
| 2007-10-31 | 1.58 |
| 2007-07-31 | 1.73 |
| 2007-04-30 | 1.11 |
| 2007-01-31 | 1.14 |
| 2006-10-31 | 1.16 |
| 2006-07-31 | 1.22 |
| 2006-04-30 | 1.16 |
| 2006-01-31 | 0.74 |
| 2005-10-31 | 0.88 |
| 2005-07-31 | 0.66 |
| 2005-04-30 | 0.67 |
| 2005-01-31 | 0.63 |
| 2004-10-31 | 0.60 |
| 2004-07-31 | 0.45 |
| 2004-04-30 | 0.63 |
| 2004-01-31 | 0.59 |
| 2003-10-31 | 0.59 |
| 2003-07-31 | 0.52 |
| 2003-04-30 | 0.54 |
| 2003-01-31 | 0.51 |
| 2002-10-31 | 0.56 |
| 2002-07-31 | 0.40 |
Related Metrics
About Ciena Corporation
Ciena Corporation is a global technology company focused on telecommunications infrastructure. It delivers integrated solutions – including specialized hardware, software applications, and professional services – designed to facilitate the efficient transmission, routing, switching, aggregation, delivery, and overall management of video, data, and voice traffic across communication networks worldwide. Within its Networking Platforms division, Ciena develops and supplies advanced hardware and integrated solutions. These products are specifically engineered to optimize the convergence of various optical transport methods (like coherent optical transport and optical transport network switching) with packet switching, enabling high-performance data handling. The product portfolio spans a range of packet-optical platforms (e.g., the 6500, 5400, and Z-Series), reconfigurable switching systems (such as the 5430), Waveserver interconnect systems, and dedicated switches for service delivery and aggregation (including the 3000 and 5000 families). This segment also provides the essential operating system software and advanced features embedded within its hardware offerings. Ciena's Blue Planet Automation Software and Services arm is dedicated to intelligent network automation. It offers solutions for orchestrating services across multiple network domains, maintaining precise network inventory, optimizing data routes, coordinating virtualized network functions (NFV), and delivering insightful analytics, alongside related support. The Platform Software and Services segment provides unified management platforms, exemplified by its OneControl system, as well as other software tools for comprehensive network planning, operational control, and ongoing oversight. Finally, the Global Services segment delivers end-to-end client support. This includes strategic consulting, detailed network architecture design, expert installation and deployment, ongoing maintenance, and comprehensive training programs. The company distributes its cutting-edge products and services to network operators through both direct sales forces and indirect channel partners. Established in 1992, Ciena Corporation maintains its corporate headquarters in Hanover, Maryland.
- Sector
- Technology
- Industry
- Communication Equipment
- CEO
- Gary Smith