• Pfizer average return on investment for 2023 was 11.79, a 51.68% decline from 2022.
• Pfizer average return on investment for 2022 was 24.4, a 61.7% decline from 2021.
• Pfizer average return on investment for 2021 was 15.09, a 35.46% 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.