WTM White Mountains Insurance Group, Ltd.
NYSEActiveCommon stock
WTM is the ticker symbol of White Mountains Insurance Group, Ltd., which is listed on NYSE.
WTM at a glance
- Symbol
- WTM
- Company / issuer
- White Mountains Insurance Group, Ltd.
- Security type
- Common stock
- Exchange
- NYSE
- Status
- Actively traded
- Seen in listing files
- Apr 2015 – present
- Sector
- Finance
- Industry
- Property-Casualty Insurers
- Country
- United States
- Market cap
- $4.8 billion (Sep 2026)
White Mountains Insurance Group, Ltd. company profile
- Industry (SIC)
- Fire, Marine & Casualty Insurance
- Headquarters
- Hanover, NH
- Incorporated in
- D0
- Fiscal year end
- December 31
- SEC filer category
- Large accelerated filer
- Latest annual report
- 10-K filed 2026-02-27
- Latest interim report
- 10-Q filed 2026-08-06
- SEC CIK
- 776867
Former company names
- Fund American Enterprises Holdings Inc (until 1999)
Source: SEC EDGAR filer data.
WTM price chart
Interactive chart provided by TradingView (loads third-party scripts).
Frequently asked questions
What company has the ticker symbol WTM?
WTM is the ticker symbol of White Mountains Insurance Group, Ltd on NYSE.
Is WTM still trading?
Yes. WTM appears in the current NYSE listings as of Sep 2026.
Which exchange is WTM listed on?
WTM is listed on NYSE.
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