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 June 09, 2026 is 331.59.
  • The all-time high Aon stock closing price was 404.78 on March 03, 2025.
  • The Aon 52-week high stock price is 381.00, which is 14.9% above the current share price.
  • The Aon 52-week low stock price is 304.59, which is 8.1% below the current share price.
  • The average Aon stock price for the last 52 weeks is 343.19.
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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 326.7110 342.6330 350.2960 308.2700 331.5900 -5.58%
2025 360.7195 350.4030 404.7790 323.8090 351.2020 -0.94%
2024 320.1188 281.9390 388.2390 271.2040 354.5290 24.45%
2023 313.4707 290.8980 336.5900 278.2050 284.8750 -2.31%
2022 279.1073 282.7640 322.3000 240.4990 291.5980 0.61%
2021 248.7552 195.6930 309.1180 193.3780 289.8230 43.39%
2020 189.3283 197.9240 225.5260 138.1860 202.1220 2.37%
2019 173.5849 135.2390 199.0050 133.2110 197.4510 44.68%
2018 136.1016 122.1500 155.4630 122.1500 136.4790 9.64%
2017 121.1383 102.9710 141.2010 102.4330 124.4810 21.49%
2016 96.3411 82.2855 106.5260 76.7611 102.4660 22.50%
2015 87.2218 84.5544 94.2345 79.9362 83.6462 -1.60%
2014 77.3026 73.0098 87.4855 68.3022 85.0026 14.30%
2013 59.6496 50.3763 74.4015 48.2890 74.3661 52.45%
2012 43.9367 40.7502 50.6482 39.3280 48.7798 20.29%
Sector Industry Market Cap Revenue
Finance Insurance Brokers $66.970B $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 $22.155B 15.14
Erie Indemnity (ERIE) United States $11.722B 27.70
Ryan Specialty Holdings (RYAN) United States $9.133B 17.55
Accelerant Holdings (ARX) Cayman Islands $2.837B 16.37
EToro Group (ETOR) Israel $2.614B 12.47
Tiptree Financial (TIPT) United States $0.637B 11.44
EHealth (EHTH) United States $0.041B 0.00
Huize Holding (HUIZ) China $0.016B 52.00
Oxbridge Re Holdings (OXBR) Cayman Islands $0.006B 0.00