• Telefonica SA average return on investment for 2023 was 1.22, a 61.27% decline from 2022.
• Telefonica SA average return on investment for 2022 was 3.15, a 13.93% decline from 2021.
• Telefonica SA average return on investment for 2021 was 3.66, a 863.16% decline from 2020.

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.