Number of shares outstanding for Aon (AON)

Number of shares outstanding as of December 2025 : 215,700,000

According to Aon's latest financial reports and stock price the company's current number of shares outstanding is 215,700,000. At the end of 2025 the company had 215,700,000 shares outstanding. The number of outstanding shares is usually impacted by stock plits and shares buy back.

Shares outstanding history for Aon from 1999 to 2025

Shares Outstanding at the end of each year

Year	Shares Outstanding	Change
2025	0.21 B	-0.42%
2024	0.21 B	8.14%
2023	0.20 B	-3.47%
2022	0.20 B	-5.38%
2021	0.21 B	-4.32%
2020	0.22 B	-2.34%
2019	0.23 B	-3.18%
2018	0.24 B	-3.54%
2017	0.25 B	-5.39%
2016	0.26 B	-3.58%
2015	0.27 B	-3.98%
2014	0.28 B	-6.26%
2013	0.30 B	-4.68%
2012	0.32 B	-4.33%
2011	0.33 B	21.19%
2010	0.27 B	-3.08%
2009	0.28 B	5.01%
2008	0.27 B	-7.77%
2007	0.29 B	-13.26%
2006	0.34 B	4%
2005	0.32 B	2.7%
2004	0.31 B	0.55%
2003	0.31 B	14.28%
2002	0.27 B	1.47%
2001	0.27 B	4.88%
2000	0.26 B	0.15%
1999	0.26 B

Shares Outstanding for similar companies or competitors

Company	Shares Outstanding	differencediff.	Country
Marsh & McLennan Companies MMC	491,000,000	127.63%	🇺🇸 USA
AXIS Capital AXS	77,619,000	-64.02%	🇧🇲 Bermuda
Arch Capital ACGL	369,000,000	71.07%	🇧🇲 Bermuda
Prudential PUK	1,357,500,000	529.35%	🇬🇧 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.

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