Marsh & McLennan Companies market cap MRSH

Share price times shares outstanding: what the whole company sells for, since 2009.

Marsh & McLennan Companies is worth $93.9B at the close on Oct 23, 2026, at $197.48 a share.

That is up 3% over the last year and up 12% over five years.

Its highest close in our data was $119B in Mar 2025.

Market cap over time

Year	End of year	Low	High	Change
2026 so far	$93.9B	$77.1B	$93.9B	+3%
2025	$91.6B	$87.3B	$119B	−13%
2024	$104.8B	$94.1B	$114.5B	+12%
2023	$93.4B	$77.1B	$99.1B	+14%
2022	$82.1B	$72.5B	$86.8B	−6%
2021	$87.8B	$55.7B	$87.8B	+48%
2020	$59.3B	$40.2B	$59.9B	+5%
2019	$56.5B	$40.3B	$56.7B	+42%
2018	$39.7B	$39B	$44.7B	−4%
2017	$41.5B	$34.9B	$43.4B	+19%
2016	$34.8B	$27.2B	$36B	+20%
2015	$28.9B	$27.6B	$31.9B	−8%
2014	$31.4B	$25.1B	$31.5B	+19%
2013	$26.5B	$19B	$26.5B	+42%
2012	$18.6B	$16.5B	$19.5B	+10%
2011	$17B	$14.4B	$17.3B	+14%
2010	$14.9B	$11.4B	$14.9B	+28%
2009	$11.6B	$11.4B	$13.1B	n/a

Companies in Insurance - Brokers nearest Marsh & McLennan Companies' size, closest first, today.

Company	Market cap
MRSHMarsh & McLennan Companies	$93.9B
AJGArthur J. Gallagher	$68.7B
AONAon	$64.4B
WTWWillis Towers Watson Public	$30.2B
BROBrown & Brown	$24.4B
ERIEErie Indemnity	$13.3B
RYANRyan Specialty	$11.2B
Peer median	$27.3B

Share price times shares outstanding: what the whole company sells for today.

Size, not quality. Large caps move slower and are covered more. That is all it tells you.

Valuation data, not investment advice. Prices as of Oct 23, 2026. Reported figures come from the company's filings with the SEC.