AON vs WTW
Aon (AON) and Willis Towers Watson (WTW) compared side by side. Aon (AON) is larger, with a market cap of $64.4B versus $30.2B for Willis Towers Watson, about 2.1 times the size. On trailing earnings, AON is cheaper at 16.7x versus 20.1x for WTW.
Head to head
| Metric | AON | WTW |
|---|---|---|
| Market cap | $64.4B | $30.2B |
| P/E (TTM) | 16.7x | 20.1x |
| Forward P/E | 15.0x | 14.2x |
| Revenue (TTM) | $17.6B | — |
| Revenue growth | 2.2% | — |
| Gross margin | 48.2% | — |
| Operating margin | 23.5% | — |
| Free cash flow | $3.2B | $1.7B |
| Dividend yield | 1.08% | 1.18% |
| 1-year return | -10.6% | -0.6% |
| 5-year return (annual) | -0.4% | +7.0% |
| Max drawdown | -67% | -57% |
| FI Handbook grade | C+ | A |
Highlighted: the stronger figure on metrics where higher or lower is clearly better.
Growth of $10,000 (5 years, price only)
AON vs WTW FAQ
Which is bigger, AON or WTW?
Aon (AON) is larger, with a market cap of $64.4B versus $30.2B for Willis Towers Watson, about 2.1 times the size.
Is AON or WTW cheaper?
On trailing earnings, AON is cheaper at 16.7x versus 20.1x for WTW. A lower P/E can reflect slower expected growth, so compare growth and margins too.
Which stock performed better over the past year, AON or WTW?
WTW returned -0.6% over the past year including dividends, versus -10.6% for AON, through October 23, 2026.
Which pays a higher dividend, AON or WTW?
WTW yields 1.18% versus 1.08% for AON.
Full pages: Aon · Willis Towers Watson