Aon plc (AON)
NYSE: AON · Real-Time Price · USD
348.23
+2.34 (0.68%)
Nov 21, 2025, 1:25 PM EST - Market open
Aon plc Market Cap
Aon plc has a market cap or net worth of $74.85 billion as of November 21, 2025. Its market cap has decreased by -6.13% in one year.
Market Cap
74.85B
Enterprise Value
91.22B
1-Year Change
-6.13%
Ranking
Category
Stock Price
$348.23
Market Cap Chart
Since December 1, 1998, Aon plc's market cap has increased from $9.85B to $74.85B, an increase of 659.53%. That is a compound annual growth rate of 7.80%.
Market Cap History
| Date | Market Cap | % Change |
|---|---|---|
| Nov 20, 2025 | 74.34B | -4.29% |
| Dec 31, 2024 | 77.67B | 33.31% |
| Dec 29, 2023 | 58.27B | -6.15% |
| Dec 30, 2022 | 62.08B | -6.25% |
| Dec 31, 2021 | 66.22B | 37.11% |
| Dec 31, 2020 | 48.30B | -0.96% |
| Dec 31, 2019 | 48.77B | 39.30% |
| Dec 31, 2018 | 35.01B | 4.55% |
| Dec 29, 2017 | 33.49B | 14.12% |
| Dec 30, 2016 | 29.34B | 16.56% |
| Dec 31, 2015 | 25.17B | -6.90% |
| Dec 31, 2014 | 27.04B | 7.07% |
| Dec 31, 2013 | 25.25B | 42.51% |
| Dec 31, 2012 | 17.72B | 17.13% |
| Dec 30, 2011 | 15.13B | 21.40% |
| Dec 31, 2010 | 12.46B | 18.67% |
| Dec 31, 2009 | 10.50B | -14.78% |
| Dec 31, 2008 | 12.32B | -11.43% |
| Dec 31, 2007 | 13.91B | 27.14% |
| Dec 29, 2006 | 10.94B | -4.87% |
| Dec 30, 2005 | 11.50B | 52.37% |
| Dec 31, 2004 | 7.55B | 0.57% |
| Dec 31, 2003 | 7.51B | 45.60% |
| Dec 31, 2002 | 5.16B | -46.08% |
| Dec 31, 2001 | 9.56B | 9.02% |
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Market Capitalization
Market capitalization, also called net worth, is the total value of all of a company's outstanding shares. It is calculated by multiplying the stock price by the number of shares outstanding.
Formula: Market Cap = Stock Price * Shares Outstanding
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