AON vs MRSH
Aon plc and Marsh McLennan, both Financial Services
Marsh McLennan is the larger company at $100B against $73B. On trailing earnings AON is the cheaper of the two at a P/E of 18.9 against 25.1, a gap that is only a bargain if the two are growing at similar rates. Over the past year MRSH returned +18% against +5.9% for AON. The RyuScore puts AON ahead, 72 against 68 out of 100.
| Figure | AON | Both figures drawn to one scale | MRSH |
|---|---|---|---|
| Last close | $345 | $209 | |
| Market cap | $73B | $100B | |
| Trailing P/Elower is cheaper for the same earnings, not automatically better | 18.9 | 25.1 | |
| Dividend yield | 0.8% | 1.8% | |
| Revenue growthlast twelve months on the year before | +3.8% | +7.6% | |
| Insiders, 12 monthsopen-market Form 4 trades | bought $75802 net | sold $16M net | |
| Short interestof shares outstanding | 1.6% | 1.4% | |
| 1-year return | +5.9% | +18% | |
| 5-year return | +11% | +32% | |
| RyuScore0 to 100 | 72/100 | 68/100 |
Figures from SEC filings and end-of-day closes. Highlighting marks the higher or lower number, which is not the same as the better investment, a low P/E can be a warning and a high one can be deserved.
Aon plc
Revenue of $4.1B in the quarter to Sep 30, 2026, net income $476M. Its largest reported line is United States, 46% of the disclosed total.
Marsh McLennan
Revenue of $6.9B in the quarter to Sep 30, 2026, net income $808M. Its largest reported line is Wealth, 46% of the disclosed total.
Open these two in the interactive comparison to add more names, change the period or see the correlation.