TotalMarketCap

Arthur J. Gallagher & Co.

AJGNYSE United StatesFinanceSpecialty Insurers

Market cap

$74.087 B

$289.07 +0.24%

Close of 6 Nov 2026

As of 6 Nov 2026, Arthur J. Gallagher & Co. (AJG) has a market capitalization of $74.1B. 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

$13.9B

#319 by revenue

Earnings

$1.49B

#286 by earnings

Shares outstanding

256,400,000

Latest filing cover page

P/E ratio

49.6

Cap ÷ net income

Specialty Insurers, ranked by market cap

All 34 →
  1. #1Marsh & Mclennan CompaniesMRSH$99.7B
  2. #2Arthur J. Gallagher & Co.AJG$74.1B
  3. #3AonAON$73.2B
  4. #4Willis Towers WatsonWTW$31.1B
  5. #5Brown & BrownBRO$24.7B

What if Arthur J. Gallagher & Co. were worth as much as…

Open the what-if tool →

Gold $28.2T

$110,171.18

Per share 381× higher

Bitcoin $1.53T

$5,961.17

Per share 20.6× higher

Apple $5.02T

$19,569.97

Per share 67.7× higher

Or at a round number

$100.0B$200.0B$500.0B$1.00T

Where these numbers come from

Share counts and financials for Arthur J. Gallagher & Co. are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Read the methodology.