Market capitalization of Aon (AON)

Market cap: HK$584.71 Billion

As of November 2025 Aon has a market cap of HK$584.71 Billion. This makes Aon the world's 293th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of Aon from 1996 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	HK$584.71 B	-3.36%
2024	HK$605.07 B	32.96%
2023	HK$455.06 B	-6.19%
2022	HK$485.08 B	-6.06%
2021	HK$516.37 B	37.91%
2020	HK$374.42 B	-0.55%
2019	HK$376.50 B	37.76%
2018	HK$273.30 B	4.46%
2017	HK$261.62 B	14.98%
2016	HK$227.54 B	18%
2015	HK$192.82 B	-6.37%
2014	HK$205.95 B	5.29%
2013	HK$195.60 B	45.96%
2012	HK$134.01 B	14.04%
2011	HK$117.51 B	-1.24%
2010	HK$118.98 B	50.3%
2009	HK$79.16 B	-16.87%
2008	HK$95.23 B	-15.84%
2007	HK$113.15 B	37.41%
2006	HK$82.34 B	-8.02%
2005	HK$89.52 B	52.41%
2004	HK$58.74 B	0.81%
2003	HK$58.26 B	44.9%
2002	HK$40.21 B	-46.07%
2001	HK$74.56 B	6.81%
2000	HK$69.81 B	-12.4%
1999	HK$79.69 B	9.22%
1998	HK$72.96 B	-5.8%
1997	HK$77.45 B	45.3%
1996	HK$53.31 B

End of Day market cap according to different sources

On Nov 12th, 2025 the market cap of Aon was reported to be:

HK$584.78 Billion

by Nasdaq

HK$584.71 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Marsh & McLennan Companies MMC	HK$695.82 B	19.00%	🇺🇸 USA
AXIS Capital AXS	HK$60.83 B	-89.60%	🇧🇲 Bermuda
Arch Capital ACGL	HK$258.60 B	-55.77%	🇧🇲 Bermuda
Prudential PUK	HK$286.21 B	-51.05%	🇬🇧 UK

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

DISCLAIMER

CompaniesMarketCap is not associated in any way with CoinMarketCap.com
Stock prices are delayed, the delay can range from a few minutes to several hours.
Company logos are from the CompaniesLogo.com logo database and belong to their respective copyright holders. Companies Marketcap displays them for editorial purposes only.

Contact

For inquiries or if you want to report a problem write to hello@8marketcap.com

Links

- Privacy policy

- Terms and conditions