Aon Plc (AON)
Aon Market Cap : 69.65B for Feb. 20, 2026
Market Cap Chart
Historical Data
Market Capitalization Definition
Market Capitalization measures the total value of a company based on their stock price multiplied by the shares outstanding. This metric is important because it gives you an idea of the size of a company, and how the size has changed over time. When studying companies from a relative basis, it would make sense to compare companies that have a similar market capitalization because factors like market share, economies of scale, and business models would also be similar.
Market Cap Range, Past 5 Years
Market Cap Benchmarks
| American International Group, Inc. | 43.16B |
| Arthur J. Gallagher & Co. | 55.64B |
| Willis Towers Watson Plc | 28.70B |
| Brown & Brown, Inc. | 23.69B |
| Marsh & McLennan Cos., Inc. | 86.81B |
Market Cap Related Metrics
| PE Ratio | 19.09 |
| PS Ratio | 4.082 |
| PEG Ratio | 0.5534 |
| Price to Book Value | 7.447 |
| Price to Free Cash Flow | 21.93 |
| Price | 325.07 |
| Earnings Yield | 5.24% |
| PEGY Ratio | 0.5391 |
| Operating PE Ratio | 14.65 |
| Normalized PE Ratio | 17.86 |