TotalMarketCap

Marsh & Mclennan Companies

MRSHNYSE United StatesFinanceSpecialty Insurers

Market cap

$84.309 B

$176.67 +1.73%

Close of 9 Oct 2026

As of 9 Oct 2026, Marsh & Mclennan Companies (MRSH) has a market capitalization of $84.3B. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$27.0B

#158 by revenue

Earnings

$4.16B

#121 by earnings

Shares outstanding

477,211,268

Latest filing cover page

P/E ratio

20.3

Cap ÷ net income

Specialty Insurers, ranked by market cap

All 34 →
  1. #1Marsh & Mclennan CompaniesMRSH$84.3B
  2. #2Arthur J. Gallagher & Co.AJG$60.0B
  3. #3AonAON$58.8B
  4. #4Willis Towers WatsonWTW$27.7B
  5. #5Brown & BrownBRO$21.3B

What if Marsh & Mclennan Companies were worth as much as…

Open the what-if tool →

Gold $29.1T

$60,899.35

Per share 345× higher

Bitcoin $1.66T

$3,479.76

Per share 19.7× higher

Nvidia $5.55T

$11,639.64

Per share 65.9× higher

Or at a round number

$200.0B$500.0B$1.00T$2.00T

Where these numbers come from

Share counts and financials for Marsh & Mclennan Companies are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 10 Oct 2026. Read the methodology.