Marsh & McLennan Companies (MMC) - Market capitalization

Market cap: A$138.51 Billion

As of December 2025 Marsh & McLennan Companies has a market cap of A$138.51 Billion. This makes Marsh & McLennan Companies the world's 220th 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 2025

End of year Market Cap

Year	Marketcap	Change
2025	A$138.51 B	-17.82%
2024	A$168.55 B	22.92%
2023	A$137.12 B	13.69%
2022	A$120.61 B	-0.18%
2021	A$120.83 B	56.58%
2020	A$77.17 B	-3.7%
2019	A$80.14 B	40.51%
2018	A$57.03 B	7.2%
2017	A$53.20 B	10.05%
2016	A$48.34 B	21.7%
2015	A$39.72 B	5.15%
2014	A$37.77 B	27.44%
2013	A$29.64 B	63.83%
2012	A$18.09 B	9.07%
2011	A$16.59 B	14.04%
2010	A$14.54 B	11.74%
2009	A$13.01 B	-26.37%
2008	A$17.68 B	12.23%
2007	A$15.75 B	-26.6%
2006	A$21.46 B	-9.36%
2005	A$23.68 B	5.73%
2004	A$22.39 B	-34%
2003	A$33.93 B	-23.12%
2002	A$44.14 B	-23.57%
2001	A$57.75 B	-0.01%
2000	A$57.76 B	48.55%
1999	A$38.88 B	58.58%
1998	A$24.51 B	26.12%
1997	A$19.44 B	105.44%
1996	A$9.46 B

End of Day market cap according to different sources

On Dec 15th, 2025 the market cap of Marsh & McLennan Companies was reported to be:

A$138.26 Billion

by Nasdaq

A$138.74 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Aon AON	A$114.33 B	-17.46%	🇬🇧 UK
Verisk Analytics VRSK	A$45.76 B	-66.96%	🇺🇸 USA
AXIS Capital AXS	A$12.60 B	-90.90%	🇧🇲 Bermuda
Arch Capital ACGL	A$53.58 B	-61.31%	🇧🇲 Bermuda
Prudential PUK	A$57.08 B	-58.79%	🇬🇧 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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Market capitalization of Marsh & McLennan Companies (MMC)

Market cap: A$138.51 Billion