Aon Plc (AON)
Aon Market Cap : 67.75B for May 15, 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. | 40.35B |
| The Allstate Corp. | 55.96B |
| Heritage Insurance Holdings, Inc. | 709.01M |
| HCI Group, Inc. | 1.996B |
| Mercury General Corp. | 5.434B |
Market Cap Related Metrics
| PE Ratio | 17.41 |
| PS Ratio | 3.908 |
| PEG Ratio | 0.3148 |
| Price to Book Value | 6.890 |
| Price to Free Cash Flow | 19.64 |
| Price | 317.22 |
| Earnings Yield | 5.75% |
| PEGY Ratio | 0.3094 |
| Operating PE Ratio | 13.64 |
| Normalized PE Ratio | 16.40 |