PE Ratio: 17.40

Basis: Latest stored market observation. Source: stored company filings and market data; unavailable inputs remain N/A.

Is the P/E ratio high or low?

The P/E ratio of 17.40 is 36% below its 5-year average of 27.28, near the low end of its 5-year range (16.92–81.20).

As of Tuesday, September 8, 2026. 24.27% below its 12-month average of 22.98.

PE Ratio (17.40) = Close Price ($315.79) / Diluted TTM EPS ($18.15)

AON PE Ratio Metrics

P/E vs. its own history

At 17.4, P/E is below its 20-year median — higher than 17% of readings in its 20-year history.

P/E Comparison

PE Ratio Formula & Definition

PE Ratio = Share Price / Diluted EPS (TTM)

The price-to-earnings ratio measures how much investors pay for each dollar of trailing earnings. A lower PE can indicate a cheaper valuation; a higher PE implies higher growth expectations.

Expanded definitions: Investopedia, Wikipedia, Corporate Finance Institute

PE Ratio FAQ

What is the P/E ratio for Aon plc (AON)?

The P/E ratio for AON stock is 17.40.

Is Aon plc's P/E ratio high or low?

The P/E ratio of 17.40 is 36% below its 5-year average of 27.28, near the low end of its 5-year range (16.92–81.20).

What is the TTM average P/E ratio for Aon plc (AON)?

The TTM average P/E ratio for AON stock is 22.98.

What is the 3Y average P/E ratio for Aon plc (AON)?

The 3Y average P/E ratio for AON stock is 25.94.

What is the 5Y average P/E ratio for Aon plc (AON)?

The 5Y average P/E ratio for AON stock is 27.28.

What is the 10Y average P/E ratio for Aon plc (AON)?

The 10Y average P/E ratio for AON stock is 27.81.

What is the 15Y average P/E ratio for Aon plc (AON)?

The 15Y average P/E ratio for AON stock is 24.96.

What is the 20Y average P/E ratio for Aon plc (AON)?

The 20Y average P/E ratio for AON stock is 22.39.

Showing the most recent 260 of 5,030 data points. The chart above shows the full history.

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