• Ciena average return on investment for 2024 was 3.41, a 33.79% decline from 2023.
• Ciena average return on investment for 2023 was 5.15, a 39.7% decline from 2022.
• Ciena average return on investment for 2022 was 8.54, a 32.7% decline from 2021.

Roi - return on investment can be defined as an indicator of how profitable a company is relative to its assets invested by shareholders and long-term bond holders. Calculated by dividing a company's operating earnings by its long-term debt and shareholders equity.