Aon - 15 Year Stock Price History | AON

Historical daily share price chart and data for Aon since 2011 adjusted for splits and dividends. The latest closing stock price for Aon as of September 18, 2026 is 295.64.
  • The all-time high Aon stock closing price was 403.86 on March 03, 2025.
  • The Aon 52-week high stock price is 382.34, which is 29.3% above the current share price.
  • The Aon 52-week low stock price is 293.00, which is 0.9% below the current share price.
  • The average Aon stock price for the last 52 weeks is 338.03.
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Aon Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2026 332.3275 341.8530 380.3930 295.6400 295.6400 -15.63%
2025 359.8991 349.6060 403.8590 323.0730 350.4030 -0.94%
2024 319.3908 281.2970 387.3560 270.5880 353.7230 24.45%
2023 312.7578 290.2370 335.8240 277.5720 284.2270 -2.31%
2022 278.4725 282.1210 321.5670 239.9520 290.9350 0.61%
2021 248.1895 195.2480 308.4150 192.9380 289.1630 43.39%
2020 188.8977 197.4740 225.0130 137.8720 201.6620 2.37%
2019 173.1901 134.9320 198.5530 132.9080 197.0010 44.67%
2018 135.7920 121.8720 155.1090 121.8720 136.1680 9.64%
2017 120.8627 102.7370 140.8790 102.2000 124.1980 21.49%
2016 96.1220 82.0983 106.2840 76.5865 102.2330 22.50%
2015 87.0234 84.3621 94.0202 79.7544 83.4559 -1.60%
2014 77.1268 72.8437 87.2866 68.1468 84.8093 14.30%
2013 59.5140 50.2617 74.2323 48.1792 74.1969 52.45%
2012 43.8368 40.6575 50.5330 39.2385 48.6689 20.29%
Sector Industry Market Cap Revenue
Finance Insurance Brokers $62.713B $17.181B
Aon plc is a multinational corporation that offers risk management services, insurance and reinsurance brokerage, human resource consulting and outsourcing services worldwide. As an insurance broker, Aon utilizes its resources to develop the individual as well as group insurance programs. It offers its services globally across personal lines, mid-market companies and multinational companies. Currently, following a major realignment of principal service lines the company reports through four revenue lines, namely, Commercial Risk Solutions, Reinsurance Solutions, Wealth Solutions, and Health Solutions.
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Brown & Brown (BRO) United States $21.756B 14.64
Erie Indemnity (ERIE) United States $11.042B 25.16
Ryan Specialty Holdings (RYAN) United States $10.302B 18.91
Accelerant Holdings (ARX) Cayman Islands $4.270B 17.87
EToro Group (ETOR) Israel $2.326B 9.68
Tiptree Financial (TIPT) United States $0.652B 175.20
EHealth (EHTH) United States $0.028B 0.00
Huize Holding (HUIZ) China $0.014B 47.33
Oxbridge Re Holdings (OXBR) Cayman Islands $0.012B 74.00