WTW vs. AON
WTW (Willis Towers Watson Public Limited Company) and AON (Aon plc) are both stocks. Both operate in the Insurance Brokers industry within the Financial Services sector. Over the past 10 years, WTW returned 12.59%/yr vs 13.50%/yr for AON. Their 0.72 correlation means they have sometimes moved together and sometimes differently.
Performance
WTW vs. AON - Performance Comparison
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Returns By Period
In the year-to-date period, WTW achieves a 4.69% return, which is significantly higher than AON's 2.06% return. Over the past 10 years, WTW has underperformed AON with an annualized return of 12.59%, while AON has yielded a comparatively higher 13.50% annualized return.
WTW
- 1D
- 1.70%
- 1M
- 19.36%
- 6M
- 8.66%
- YTD
- 4.69%
- 1Y
- 9.89%
- 3Y*
- 18.59%
- 5Y*
- 11.58%
- 10Y*
- 12.59%
- ALL TIME*
- 11.65%
AON
- 1D
- -0.58%
- 1M
- 0.28%
- 6M
- 2.80%
- YTD
- 2.06%
- 1Y
- 2.12%
- 3Y*
- 5.21%
- 5Y*
- 7.49%
- 10Y*
- 13.50%
- ALL TIME*
- 11.69%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
AON Aon plc | $634.97M | $503.68M | $538.95M |
| $207.82M | $182.77M | $191.85M |
WTW vs. AON - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
WTW Willis Towers Watson Public Limited Company | 4.69% | 6.09% | 31.48% | 0.08% | 4.53% | 14.16% | 5.83% | 34.81% | 2.42% | 25.05% |
AON Aon plc | 2.06% | -0.94% | 24.45% | -2.31% | 0.61% | 43.39% | 2.37% | 44.68% | 9.94% | 21.49% |
Correlation
The correlation between WTW and AON is 0.71, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.71 |
Correlation (3Y) Balances recent behavior with more history. | 0.65 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.68 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.73 |
Correlation (All Time) Calculated using the full available price history since Jan 5, 2016 | 0.72 |
The correlation between WTW and AON has been stable across timeframes, ranging from 0.65 to 0.73 - a consistent structural relationship.
Fundamentals
WTW:
$31.73B
AON:
$75.86B
WTW:
$16.14
AON:
$18.14
WTW:
21.16
AON:
19.72
WTW:
0.65
AON:
0.50
WTW:
3.28
AON:
4.39
WTW:
4.22
AON:
7.94
WTW:
$10.10B
AON:
$17.58B
WTW:
$553.00M
AON:
$14.61B
WTW:
$2.57B
AON:
$6.31B
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Return for Risk
WTW vs. AON — Risk / Return Rank
WTW
AON
WTW vs. AON - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Willis Towers Watson Public Limited Company (WTW) and Aon plc (AON). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| WTW | AON | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.25 | ||
| Sortino ratioReturn per unit of downside risk | +0.33 | ||
| Omega ratioGain probability vs. loss probability | 1.10 | 1.04 | +0.06 |
| Calmar ratioReturn relative to maximum drawdown | 0.33 | 0.12 | +0.20 |
| Martin ratioReturn relative to average drawdown | 0.68 | 0.22 | +0.46 |
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Drawdowns
WTW vs. AON - Drawdown Comparison
The maximum WTW drawdown since its inception was -32.95%, smaller than the maximum AON drawdown of -69.05%. Use the drawdown chart below to compare losses from any high point for WTW and AON.
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Drawdown Indicators
| WTW | AON | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -32.95% | -69.05% | +36.10% |
Max Drawdown (1Y)Largest decline over 1 year | -30.39% | -17.28% | -13.11% |
Max Drawdown (3Y)Largest decline over 3 years | -30.39% | -23.84% | -6.55% |
Max Drawdown (5Y)Largest decline over 5 years | -30.39% | -25.38% | -5.01% |
Max Drawdown (10Y)Largest decline over 10 years | -32.95% | -38.73% | +5.78% |
Current DrawdownCurrent decline from peak | -1.42% | -11.45% | +10.03% |
Average DrawdownAverage peak-to-trough decline | -7.88% | -13.67% | +5.79% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 14.51% | 9.72% | +4.79% |
Volatility
WTW vs. AON - Volatility Comparison
Willis Towers Watson Public Limited Company (WTW) has a higher volatility of 9.62% compared to Aon plc (AON) at 8.52%. This indicates that WTW's price experiences larger fluctuations and is considered to be riskier than AON based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| WTW | AON | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 9.62% | 8.52% | +1.10% |
Volatility (6M)Calculated over the trailing 6-month period | 27.69% | 21.76% | +5.93% |
Volatility (1Y)Calculated over the trailing 1-year period | 29.67% | 25.26% | +4.41% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 23.85% | 23.14% | +0.71% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 24.69% | 23.62% | +1.07% |
Dividends
WTW vs. AON - Dividend Comparison
WTW's dividend yield for the trailing twelve months is around 1.10%, more than AON's 0.88% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AON Aon plc | 0.88% | 0.82% | 0.74% | 0.83% | 0.73% | 0.66% | 0.84% | 0.83% | 1.35% | 1.05% | 1.16% | 1.25% |
WTW Willis Towers Watson Public Limited Company | 1.10% | 1.12% | 1.12% | 1.39% | 1.34% | 1.27% | 1.31% | 1.29% | 1.58% | 1.41% | 1.57% | 0.00% |
Financials
WTW vs. AON - Financials Comparison
This section allows you to compare key financial metrics between Willis Towers Watson Public Limited Company and Aon plc. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
Frequently Asked Questions
WTW and AON have a correlation of 0.71, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
WTW has higher volatility (9.62%) compared to AON (8.52%). In terms of maximum drawdown, WTW dropped -32.95% vs AON's -69.05%.
WTW currently has the higher Sharpe Ratio (0.34 vs 0.08), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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