AON (AON) Stock Chart & Stock Price History $361.06 +0.64 (+0.18%) As of 01:37 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock AON Stock Price Performance The AON (AON) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 2.47%, with a year-to-date return of 0.89%. In the past month, the stock has increased 0.05%, reflecting recent market activity. As of the latest close, AON traded at $360.52 with a market cap of $77.74 billion and volume of 692,525 shares. Five years ago, the stock traded at $209.19, representing a 73.21% increase over that period. At the time, it had a market cap of $48.46 billion and a volume of 987,387 shares. 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Read our full terms of service and privacy policy. 5 Day Performance-0.47%1 Month Performance+0.05%3 Month Performance+0.96%Year-To-Date Performance+0.89%1 Year Performance+2.47%5 Year Performance+73.21% AON Stock Chart for Friday, October, 10, 2025 AON Chart by TradingView AON Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization10/09/2025$365.36$360.52-1.32%$367.25$359.92692,525 shs$77.74 billion10/08/2025$367.23$365.36-0.51%$370.31$364.941.02 million shs$78.78 billion10/07/2025$366.15$367.23+0.29%$369.68$364.33783,191 shs$79.19 billion10/06/2025$364.06$366.15+0.57%$367.00$362.121.08 million shs$78.95 billion10/03/2025$360.61$364.06+0.96%$365.98$359.49666,880 shs$78.50 billion10/02/2025$359.87$360.61+0.20%$362.23$354.61621,268 shs$77.76 billion10/01/2025$356.51$359.87+0.94%$360.14$353.311.34 million shs$77.60 billion09/30/2025$354.28$356.51+0.63%$357.01$351.80920,760 shs$76.87 billion09/29/2025$356.24$354.28-0.55%$356.62$352.561.06 million shs$76.39 billion09/26/2025$351.04$356.24+1.48%$358.99$351.49824,595 shs$76.82 billion Get the Latest News and Ratings for AON and Related StocksEnter your email address below to receive the latest news and analysts' ratings for AON and its competitors with MarketBeat's FREE daily newsletter. 09/25/2025$353.88$351.04-0.80%$356.74$349.151.29 million shs$75.69 billion09/24/2025$353.07$353.88+0.23%$356.28$352.50981,312 shs$76.31 billion09/23/2025$354.10$353.07-0.29%$356.58$349.331.76 million shs$76.13 billion09/22/2025$350.05$354.10+1.16%$355.21$349.211.28 million shs$76.35 billion09/19/2025$352.86$350.05-0.79%$355.40$348.643.73 million shs$75.48 billion09/18/2025$358.07$352.86-1.46%$357.83$352.691.39 million shs$76.09 billion09/17/2025$356.22$358.07+0.52%$361.24$355.221.43 million shs$77.21 billion09/16/2025$363.83$356.22-2.09%$362.76$356.151.35 million shs$76.81 billion09/15/2025$372.12$363.83-2.23%$373.60$363.20779,479 shs$78.45 billion09/12/2025$371.74$372.12+0.10%$374.05$369.81844,376 shs$80.24 billion09/11/2025$362.14$371.74+2.65%$372.39$364.791.61 million shs$80.16 billion09/10/2025$366.20$362.14-1.11%$365.36$361.08798,913 shs$78.09 billion09/09/2025$369.69$366.20-0.94%$370.48$365.86974,261 shs$78.96 billion Related Companies WTW Stock Price Chart AJG Stock Price Chart BRO Stock Price Chart MMC Stock Price Chart RYAN Stock Price Chart CRD.B Stock Price Chart EHTH Stock Price Chart ERIE Stock Price Chart ETOR Stock Price Chart TIPT Stock Price Chart Receive AON Stock News and Ratings via EmailSign-up to receive the latest news and ratings for AON and its competitors with MarketBeat's FREE daily newsletter. 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