• Amgen average return on investment for 2023 was 13.64, a 17.13% decline from 2022.
• Amgen average return on investment for 2022 was 16.46, a 11.29% decline from 2021.
• Amgen average return on investment for 2021 was 14.79, a 18.91% increase 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.