RIO vs. AON
RIO (Rio Tinto Group) and AON (Aon plc) are both stocks. RIO operates in Other Industrial Metals & Mining (Basic Materials), while AON operates in Insurance Brokers (Financial Services). Over the past 10 years, RIO returned 22.54%/yr vs 13.10%/yr for AON. At a 0.23 correlation, their price movements are largely independent.
Performance
RIO vs. AON - Performance Comparison
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Returns By Period
In the year-to-date period, RIO achieves a 35.32% return, which is significantly higher than AON's -4.52% return. Over the past 10 years, RIO has outperformed AON with an annualized return of 22.54%, while AON has yielded a comparatively lower 13.10% annualized return.
RIO
- 1D
- 1.65%
- 1M
- -5.97%
- YTD
- 35.32%
- 6M
- 43.14%
- 1Y
- 89.03%
- 3Y*
- 24.54%
- 5Y*
- 11.74%
- 10Y*
- 22.54%
AON
- 1D
- 0.04%
- 1M
- 7.85%
- YTD
- -4.52%
- 6M
- -4.77%
- 1Y
- -4.90%
- 3Y*
- 2.54%
- 5Y*
- 6.89%
- 10Y*
- 13.10%
RIO vs. AON - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
RIO Rio Tinto Group | 35.32% | 44.47% | -15.36% | 11.06% | 18.48% | -3.67% | 36.22% | 33.18% | -2.93% | 44.87% |
AON Aon plc | -4.52% | -0.94% | 24.45% | -2.31% | 0.61% | 43.39% | 2.37% | 44.68% | 9.94% | 21.49% |
Correlation
The correlation between RIO and AON is -0.18, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.18 |
Correlation (3Y) Calculated over the trailing 3-year period | -0.01 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.12 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.19 |
Correlation (All Time) Calculated using the full available price history since Jun 28, 1990 | 0.23 |
The correlation between RIO and AON shifts across timeframes, from -0.18 (1 year) to 0.23 (all time), reflecting how their relationship changes across market environments.
Fundamentals
RIO:
$172.61B
AON:
$72.23B
RIO:
$13.11
AON:
$18.21
RIO:
8.03
AON:
18.41
RIO:
1.55
AON:
4.15
RIO:
2.77
AON:
7.34
RIO:
$111.41B
AON:
$17.49B
RIO:
$31.10B
AON:
$9.77B
RIO:
$40.42B
AON:
$6.55B
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Return for Risk
RIO vs. AON — Risk / Return Rank
RIO
AON
RIO vs. AON - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Rio Tinto Group (RIO) 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.
| RIO | AON | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +3.26 | ||
| Sortino ratioReturn per unit of downside risk | +3.69 | ||
| Omega ratioGain probability vs. loss probability | 1.46 | 0.98 | +0.48 |
| Calmar ratioReturn relative to maximum drawdown | 5.89 | -0.28 | +6.18 |
| Martin ratioReturn relative to average drawdown | 21.91 | -0.53 | +22.44 |
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Drawdowns
RIO vs. AON - Drawdown Comparison
The maximum RIO drawdown since its inception was -88.97%, which is greater than AON's maximum drawdown of -69.05%. Use the drawdown chart below to compare losses from any high point for RIO and AON.
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Drawdown Indicators
| RIO | AON | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -88.97% | -69.05% | -19.92% |
Max Drawdown (1Y)Largest decline over 1 year | -15.19% | -17.28% | +2.09% |
Max Drawdown (3Y)Largest decline over 3 years | -24.19% | -23.84% | -0.35% |
Max Drawdown (5Y)Largest decline over 5 years | -35.25% | -25.38% | -9.87% |
Max Drawdown (10Y)Largest decline over 10 years | -37.47% | -38.73% | +1.26% |
Current DrawdownCurrent decline from peak | -5.97% | -17.16% | +11.19% |
Average DrawdownAverage peak-to-trough decline | -23.76% | -13.67% | -10.09% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.09% | 9.29% | -5.20% |
Volatility
RIO vs. AON - Volatility Comparison
Rio Tinto Group (RIO) has a higher volatility of 11.81% compared to Aon plc (AON) at 5.69%. This indicates that RIO'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
| RIO | AON | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 11.81% | 5.69% | +6.12% |
Volatility (6M)Calculated over the trailing 6-month period | 24.27% | 19.50% | +4.77% |
Volatility (1Y)Calculated over the trailing 1-year period | 29.32% | 23.54% | +5.78% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 29.30% | 23.11% | +6.19% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 30.65% | 23.45% | +7.20% |
Dividends
RIO vs. AON - Dividend Comparison
RIO's dividend yield for the trailing twelve months is around 3.82%, more than AON's 0.91% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AON Aon plc | 0.91% | 0.82% | 0.74% | 0.83% | 0.73% | 0.66% | 0.84% | 0.83% | 1.35% | 1.05% | 1.16% | 1.25% |
RIO Rio Tinto Group | 3.82% | 4.66% | 7.40% | 5.40% | 10.48% | 10.23% | 5.13% | 7.68% | 6.32% | 4.47% | 3.93% | 7.58% |
Financials
RIO vs. AON - Financials Comparison
This section allows you to compare key financial metrics between Rio Tinto Group 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
RIO vs. AON - Profitability Comparison
RIO - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Rio Tinto Group reported a gross profit of 8.15B and revenue of 30.65B. Therefore, the gross margin over that period was 26.6%.
AON - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Aon plc reported a gross profit of 2.64B and revenue of 5.03B. Therefore, the gross margin over that period was 52.5%.
RIO - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Rio Tinto Group reported an operating income of 8.15B and revenue of 30.65B, resulting in an operating margin of 26.6%.
AON - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Aon plc reported an operating income of 1.72B and revenue of 5.03B, resulting in an operating margin of 34.1%.
RIO - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Rio Tinto Group reported a net income of 5.42B and revenue of 30.65B, resulting in a net margin of 17.7%.
AON - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Aon plc reported a net income of 1.21B and revenue of 5.03B, resulting in a net margin of 24.1%.
Frequently Asked Questions
RIO and AON have a correlation of -0.18, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
RIO has higher volatility (11.81%) compared to AON (5.69%). In terms of maximum drawdown, RIO dropped -88.97% vs AON's -69.05%.
RIO currently has the higher Sharpe Ratio (3.05 vs -0.21), 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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