Arthur J. Gallagher & Co. (AJG) - Market capitalization

Market cap: A$135.03 Billion

As of April 2025 Arthur J. Gallagher & Co. has a market cap of A$135.03 Billion. This makes Arthur J. Gallagher & Co. the world's 204th 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 Arthur J. Gallagher & Co. from 1996 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	A$135.03 B	17.34%
2024	A$115.07 B	61.48%
2023	A$71.26 B	22%
2022	A$58.41 B	19.74%
2021	A$48.78 B	57.67%
2020	A$30.94 B	20.94%
2019	A$25.58 B	32.91%
2018	A$19.24 B	31.35%
2017	A$14.65 B	14.14%
2016	A$12.83 B	29.15%
2015	A$9.94 B	4.99%
2014	A$9.46 B	34.71%
2013	A$7.02 B	67.84%
2012	A$4.18 B	13.75%
2011	A$3.68 B	18.63%
2010	A$3.10 B	20.82%
2009	A$2.56 B	-27.47%
2008	A$3.54 B	39.04%
2007	A$2.54 B	-30.92%
2006	A$3.68 B	-8.74%
2005	A$4.03 B	4.41%
2004	A$3.86 B	-1.65%
2003	A$3.93 B	-14.81%
2002	A$4.61 B	-19.72%
2001	A$5.75 B	27.16%
2000	A$4.52 B	149.21%
1999	A$1.81 B	42.73%
1998	A$1.27 B	44.99%
1997	A$0.87 B	37.94%
1996	A$0.63 B

End of Day market cap according to different sources

On Apr 4th, 2025 the market cap of Arthur J. Gallagher & Co. was reported to be:

A$135.03 Billion

by Yahoo Finance

A$135.03 Billion

by CompaniesMarketCap

A$134.56 Billion

by Nasdaq

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Aon AON	A$134.24 B	-0.59%	🇬🇧 UK
Marsh & McLennan Companies MMC	A$187.67 B	38.98%	🇺🇸 USA
Brown & Brown BRO	A$54.52 B	-59.62%	🇺🇸 USA

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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Market capitalization of Arthur J. Gallagher & Co. (AJG)

Market cap: A$135.03 Billion