Aon Plc Class A (AON)
AON · Financials · 
United States
Aon Plc Class A (AON) is a US company in the Financials sector. The stock has its largest weight in XUFI (MSCI USA Financials), at 0.83%. Anyone who holds an ETF containing Aon Plc also has an indirect stake in the company.
Data and Charts: Aon Plc
Key Data for Aon Plc
Aon Plc Stock Price Chart
The Aon Plc chart shows daily closing prices and is set to the current year by default. The stock is down 8.8% year to date and down 2.0% over twelve months. The last recorded close on October 30, 2026, was $321.67, at 47% of the 52-week range.
Price series from our database since Aug 12, 2024, 558 daily values.
Aon Plc Stock Performance
| Year to date | -8.8% | 1 year | -2.0% |
|---|---|---|---|
| 1 month | +16.2% | 3 months | -10.8% |
| Calendar year 2025 | -1.7% |
Measured in euros, Aon Plc is down 4.1% year to date and up 1.3% over twelve months. The difference from the dollar figures above comes from the exchange rate alone. Each daily price is converted at the ECB euro reference rate for that day.
Alysly Data Analysis: Aon Plc
What ETF Is Aon Plc In?
Aon Plc has above-average ETF coverage and is held by 22 of the 104 ETFs we track, which together follow 11 indices. That puts the stock in more ETFs than 85.1% of the 4,341 stocks we track.
| ETF | Index | Weight | per €1,000 in the ETF |
|---|---|---|---|
| XUFI / XUFN | MSCI USA Financials | 0.83% | €8.29 |
| XDWF | MSCI World Financials | 0.45% | €4.46 |
| WFIN | MSCI World Financials | 0.44% | €4.45 |
| XDEB | MSCI World Minimum Volatility | 0.32% | €3.23 |
| XDEQ | MSCI World Quality | 0.22% | €2.19 |
| XDEW | S&P 500 Equal Weight | 0.21% | €2.05 |
| SPYL / SPY5 | S&P 500 | 0.10% | €1.04 |
| SXR8 | S&P 500 | 0.10% | €1.00 |
| XD9U / XD9D | MSCI USA | 0.10% | €0.98 |
| SPYI / SPSA | MSCI ACWI IMI | 0.08% | €0.76 |
| SWWD | MSCI World | 0.07% | €0.72 |
| SPPW | MSCI World | 0.07% | €0.72 |
| XDWD / XDWL | MSCI World | 0.07% | €0.72 |
| EUNL | MSCI World | 0.07% | €0.70 |
| SPYY | MSCI ACWI | 0.06% | €0.64 |
| WIMI | MSCI World IMI | 0.06% | €0.64 |
| IUSQ | MSCI ACWI | 0.06% | €0.60 |
The last column shows how much of €1,000 in one of these funds goes to Aon Plc, based on each fund's latest holdings list.
US-listed ETFs holding Aon Plc (weight per latest SEC filing): IVV 0.11%, SPY 0.11%, VOO 0.11%, VTI 0.09%. These funds are registered in the US; retail investors in the EU usually cannot buy them.
Aon Plc Weight in iShares Core MSCI World (EUNL) Since 2019
In iShares Core MSCI World (EUNL), Aon Plc had a weight of 0.12% on Sep 30, 2019 and 0.07% on Oct 30, 2026. The fund tracks the MSCI World. Its share peaked at 0.13% on Dec 30, 2022. The weight rises and falls with the stock's price performance relative to the other index members. It can also change when the index provider adjusts the index composition.
What's Inside Your ETF Portfolio and the ETF overlap check show how much Aon Plc overlaps with the rest of a portfolio.
Stocks With ETF Exposure Similar to Aon Plc
| Stock | Shared ETFs | r | 1 year | Annualized volatility | Net margin | Revenue growth |
|---|---|---|---|---|---|---|
| Aon Plc | – | – | -2.0% | 24.6% | 21.5% | +9.4% |
 CME Group | 22 | – | +15.3% | 21.4% | 62.5% | +6.4% |
 Mastercard Incorporated | 22 | – | +15.2% | 21.9% | 45.6% | +16.4% |
 Marsh & McLennan Companies | 22 | +0.75 | +12.3% | 22.7% | 15.4% | +10.3% |
| Cboe Global Markets Inc | 22 | – | +41.7% | 29.3% | – | – |
 Progressive Corporation | 22 | – | +11.7% | 25.6% | 12.9% | +16.3% |
 Willis Towers Watson Public Limited Company | 22 | +0.62 | +2.3% | 25.6% | 16.5% | -2.2% |
| Brown & Brown | 22 | +0.71 | -13.3% | 27.8% | 17.9% | +22.8% |
 Chubb Limited | 22 | – | +31.0% | 19.6% | 17.4% | +6.5% |
These stocks reach a portfolio through largely the same funds as Aon Plc. “Shared ETFs” counts the funds that hold both.
Return and volatility are calculated from our daily closing prices in US dollars. Margin and growth come from each company's latest SEC annual filing. Because fiscal years do not end on the same date for every company, the underlying periods are not fully identical.
Fundamental Analysis: Aon Plc
Aon Plc Key Financials
Figures come from the SEC annual filing for the latest reported fiscal year (period end Dec 31, 2025).
| Fiscal year | Revenue | Net income | Margin |
|---|---|---|---|
| FY ended Dec 2023 | 13.4 | 2.6 | 19.2% |
| FY ended Dec 2024 | 15.7 | 2.7 | 16.9% |
| FY ended Dec 2025 | 17.2 | 3.7 | 21.5% |
Technical Analysis: Aon Plc
Aon Plc Risk Metrics
The close on Oct 30, 2026, was 21.4% below the highest close since Aug 12, 2024. That high was reached on Mar 3, 2025. When the S&P 500 rose or fell 1%, Aon Plc moved 0.28% on average in the opposite direction (past 252 trading days). The correlation of -0.13, however, shows only a moderate link to the broad market. Accordingly, moves in the S&P 500 explain only a small part of the daily price moves of Aon Plc.
What Aon Plc Correlates With
| Instrument | r | −1 … +1 |
|---|---|---|
| Arthur J. Gallagher & Co. | +0.78 | |
| Marsh & McLennan Companies Inc. | +0.75 | |
| Brown & Brown Inc. | +0.71 | |
| Equifax Inc. | +0.63 | |
| Arch Capital Group Ltd. | +0.62 | |
| Willis Towers Watson Public Limited Company | +0.62 | |
| Keysight Technologies Inc | -0.56 | |
| Teradyne Inc. | -0.56 | |
| Hewlett Packard Enterprise Co. | -0.49 |
The strongest co-movers are listed at the top, the strongest inverse movers at the bottom. Low or negative correlations can help spread risk more broadly across a portfolio.
