White Mountains Insurance Group, Ltd.

WTM · NYSE · Stock · Financial Services
$2,149.04
+2.43% today
Delayed price,

What White Mountains Insurance Group does

White Mountains Insurance Group, Ltd. provides insurance services in the United States, the United Kingdom, Bermuda, and internationally. It operates through Ark/WM Outrigger, HG Global, Kudu, Distinguished, and Other Operations segments. The company offers property insurance and reinsurance; specialty insurance and reinsurance consisting of aviation, contingency, cyber, fine art and specie, mortgage, nuclear, political and credit, space, surety, and terrorism and political violence; marine and energy insurance and reinsurance; casualty insurance and reinsurance, such as medical malpractice, and professional and general liability; and accident and health insurance and reinsurance, which includes personal accident, sickness, disability, travel, short-term life, and medical products through brokers, managing general agents (MGA), and reinsurance intermediaries. It also provides municipal bond guarantee reinsurance, which focuses on single risk limits for small-to-medium sized, and public investment grade municipal bonds that are issued to finance public purpose projects, including schools, utilities, and transportation facilities. In addition, the company offers capital solutions for boutique asset and wealth managers for generational ownership transfers, management buyouts, acquisition and growth finance, and legacy partner liquidity; strategic advice; investment management; and specialty electrical contracting services. Further, it operates as a full-service MGA and program administrator for specialty property and casualty insurance for the real estate and hospitality end markets, and start-up programs; and an MGA for leisure travel and global expatriate medical insurance in Israel, the European Union, and Australia. The company was formerly known as Fund American Enterprises Holdings, Inc. and changed its name to White Mountains Insurance Group, Ltd. in 1999. White Mountains Insurance Group, Ltd. was incorporated in 1980 and is headquartered in Hamilton, Bermuda.

Key facts

Sector
Financial Services
Industry
Insurance - Property & Casualty
Market cap
$5.13B
P/E (ttm)
4.9
Forward P/E
23.9
Dividend yield
0.05%
Beta
0.28
Profit margin
37.7%
Employees
1,648
Headquarters
Hamilton, Bermuda
Exchange
NYSE

Performance

1 Month
+4.3%
3 Months
-2.8%
6 Months
-7.3%
1 Year
+12.3%
5 Years
+114.3%
$1,830.1352-week range$2,333.00
Biggest setback — last 12 months
-13.2%
13 Apr 2026 → 15 Jun 2026
Fell from $2,319.41 to $2,013.36 — its sharpest sustained decline this year.
Biggest run-up — last 12 months
+21.8%
27 Oct 2025 → 13 Apr 2026
Ran from $1,904.56 to $2,319.41 — its strongest sustained advance this year.

Price outlook — trend & volatility model

● Trend: Above long-term trend
Price sits above its 200-day average, but the shorter-term averages are not cleanly aligned above/below it.
HorizonBear case (−1σ)Base caseBull case (+1σ)
1 Month$2,043.42 (-4.9%)$2,149.04$2,260.12 (+5.2%)
3 Months$1,969.41 (-8.4%)$2,149.04$2,345.07 (+9.1%)
6 Months$1,899.47 (-11.6%)$2,149.04$2,431.41 (+13.1%)
12 Months$1,804.78 (-16.0%)$2,149.04$2,558.97 (+19.1%)
Statistical, not machine-learning: a random-walk (no assumed drift) volatility model built from this ticker's own realized price history, plus a purely descriptive moving-average trend read. Illustrative only — not a price target and not financial advice. The bear and bull cases sit one standard deviation (1σ) below and above today's price, a range that covers about 68% of the outcomes the model treats as plausible, not a 68% chance of either case. Annualized volatility used: 17.5%, blended from this ticker's own 3-month and 1-year realized price history. Base case is deliberately flat — this quantifies a possible range, not a directional prediction. See the full model, including wider (≈95%) bands →

Comparable companies

Recent headlines

Recent insider activity

Sold 2 shares — Tanner David Allen, Director · 2026-08-31
Acquired 113 shares — Klar Stephen, Director · 2026-08-27
Acquired 135 shares — Tanner David Allen, Director · 2026-05-22
Acquired 135 shares — SHANK SUZANNE F., Director · 2026-05-22
Acquired 190 shares — Hicks Weston M, Director · 2026-05-22
Source: SEC Form 4 filings. An "acquired" entry with no price is typically a stock award or option exercise rather than an open-market purchase. Search all insider trades →

Learn the basics

Prices and company data are delayed reference figures from public sources (Yahoo Finance, SEC EDGAR) and may be inaccurate or out of date. This page is informational only — it is not investment advice or a recommendation to buy or sell any security. Past performance does not indicate future results.