TotalMarketCap

White Mountains Insurance Group

WTMNYSE United StatesFinanceProperty-Casualty Insurers

Market cap

$5.447 B

$2,282.06 -3.97%

Close of 6 Nov 2026

As of 6 Nov 2026, White Mountains Insurance Group (WTM) has a market capitalization of $5.45B. 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

$3.73B

#809 by revenue

Earnings

$1.11B

#356 by earnings

Shares outstanding

2,386,823

Latest filing cover page

P/E ratio

4.9

Cap ÷ net income

Property-Casualty Insurers, ranked by market cap

All 68 →
  1. #24Selective Insurance GroupSIGI$6.00B
  2. #25Mgic InvestmentMTG$5.83B
  3. #26White Mountains Insurance GroupWTM$5.45B
  4. #27Radian GroupRDN$4.92B
  5. #28Mercury GeneralMCY$4.69B

What if White Mountains Insurance Group were worth as much as…

Open the what-if tool →

Gold $28.2T

$11,830,823

Per share 5,184× higher

Bitcoin $1.53T

$640,145.23

Per share 281× higher

Apple $5.02T

$2,101,537

Per share 921× higher

Or at a round number

$10.0B$20.0B$50.0B$100.0B

Where these numbers come from

Share counts and financials for White Mountains Insurance Group 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.