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

Market cap: $73.64 Billion USD

As of January 2025 Arthur J. Gallagher & Co. has a market cap of $73.64 Billion USD. This makes Arthur J. Gallagher & Co. the world's 258th 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	$73.64 B	2.89%
2024	$71.57 B	47.42%
2023	$48.55 B	22.14%
2022	$39.75 B	12.39%
2021	$35.36 B	48.66%
2020	$23.79 B	32.82%
2019	$17.91 B	32.09%
2018	$13.56 B	18.53%
2017	$11.44 B	23.62%
2016	$9.25 B	27.79%
2015	$7.24 B	-6.54%
2014	$7.74 B	23.6%
2013	$6.26 B	44.07%
2012	$4.35 B	15.29%
2011	$3.77 B	19.75%
2010	$3.15 B	36.62%
2009	$2.30 B	-7.65%
2008	$2.49 B	12.2%
2007	$2.22 B	-23.39%
2006	$2.90 B	-1.68%
2005	$2.95 B	-1.27%
2004	$2.99 B	2.4%
2003	$2.92 B	12.4%
2002	$2.60 B	-11.38%
2001	$2.93 B	16.07%
2000	$2.52 B	112.04%
1999	$1.19 B	53.18%
1998	$0.77 B	36.27%
1997	$0.57 B	13.13%
1996	$0.50 B

End of Day market cap according to different sources

On Jan 17th, 2025 the market cap of Arthur J. Gallagher & Co. was reported to be:

$73.64 Billion USD

by Yahoo Finance

$73.64 Billion USD

by CompaniesMarketCap

$64.70 Billion USD

by Nasdaq

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Aon AON	$79.19 B	7.53%	🇬🇧 UK
Marsh & McLennan Companies MMC	$105.70 B	43.53%	🇺🇸 USA
Brown & Brown BRO	$30.18 B	-59.02%	🇺🇸 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: $73.64 Billion USD