• Marsh & McLennan average return on investment for 2023 was 15.49, a 1.11% increase from 2022.
• Marsh & McLennan average return on investment for 2022 was 15.32, a 17.39% increase from 2021.
• Marsh & McLennan average return on investment for 2021 was 13.05, a 29.21% 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.