Marsh & McLennan Companies (MRSH) - Market capitalization

Market cap: $80.01 Billion USD

As of May 2026 Marsh & McLennan Companies has a market cap of $80.01 Billion USD. This makes Marsh & McLennan Companies the world's 292th 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 Marsh & McLennan Companies from 1996 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	$80.01 B	-11.05%
2025	$89.95 B	-13.82%
2024	$104.37 B	11.73%
2023	$93.42 B	13.82%
2022	$82.07 B	-6.22%
2021	$87.52 B	47.34%
2020	$59.40 B	5.87%
2019	$56.10 B	39.64%
2018	$40.18 B	-3.27%
2017	$41.53 B	19.19%
2016	$34.84 B	20.42%
2015	$28.93 B	-6.4%
2014	$30.91 B	16.93%
2013	$26.44 B	40.62%
2012	$18.80 B	10.54%
2011	$17.01 B	15.11%
2010	$14.77 B	26.36%
2009	$11.69 B	-6.25%
2008	$12.47 B	-9.44%
2007	$13.77 B	-18.6%
2006	$16.92 B	-2.34%
2005	$17.32 B	-0.02%
2004	$17.33 B	-31.29%
2003	$25.22 B	1.43%
2002	$24.87 B	-15.63%
2001	$29.47 B	-8.73%
2000	$32.29 B	26.39%
1999	$25.55 B	70.19%
1998	$15.01 B	18.53%
1997	$12.66 B	68.48%
1996	$7.51 B

End of Day market cap according to different sources

On May 19th, 2026 the market cap of Marsh & McLennan Companies was reported to be:

$80.02 Billion USD

by Nasdaq

$80.01 Billion USD

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Aon AON	$69.12 B	-13.60%	🇬🇧 UK
Verisk Analytics VRSK	$22.36 B	-72.05%	🇺🇸 USA
Prudential PUK	$37.98 B	-52.52%	🇬🇧 UK
Arch Capital ACGL	$33.67 B	-57.91%	🇧🇲 Bermuda
AXIS Capital AXS	$7.37 B	-90.78%	🇧🇲 Bermuda

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 Marsh & McLennan Companies (MRSH)

Market cap: $80.01 Billion USD