White Mountains Insurance Group Ltd (WTM) stock
Close on Nov 11, 2026Market cap $5.39BP/E 6.0Yield 0.04%
White Mountains Insurance Group Ltd grew revenue 44.9% to $3.61B over the twelve months to Sep 30, 2026. At the latest close the market valued the company at $5.39B, 6.0 times its earnings.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2026
Valuation
- Market cap
- $5.39B
- P/E ratio
- 6.0
- Price to sales
- 1.50
- Price to book
- 1.01
- Dividend yield
- 0.04%
- Free cash flow yield
- –
Fundamentals
- Revenue
- $3.61B
- Net income
- $969.10M
- EPS, diluted
- $377.74
- Book value per share
- $2272.98
- Diluted shares
- 2M
Trading
- Next earnings
- Feb 5, 2027 (estimated, before the open)
- Previous close
- $2280.00
- Open
- $2261.94
- Day's range
- $2222.00 – $2275.01
- Volume
- 25,613
- Average volume (20 days)
- 25,032
- Index membership
- Russell 1000 (since Sep 2022)
- Beta (5 years)
- 0.24
- 52-week range
- $1870.00 – $2378.94
- RSI (14 days)
- 56.4
- Volatility (1 year)
- 20.1%
- Relative volume
- 1.23×
- WACC
- 7.4%
Index membership is inferred from the holdings of funds that track each index (IWB), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.
Market cap history
Month-end market cap since 2010, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 11, 2026. The S&P 500 is measured by the SPY fund.
| Period | WTM | S&P 500 | Difference | WTM per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | +9.7% | -2.4% | +12.1 pts | ||
| 3 months | +7.0% | -1.2% | +8.1 pts | ||
| Year to date | +8.8% | +12.3% | −3.5 pts | ||
| 1 year | +17.4% | +12.4% | +5.0 pts | ||
| 3 years | +49.9% | +78.8% | −28.9 pts | +14.4% | +21.4% |
| 5 years | +101.1% | +75.2% | +26.0 pts | +15.0% | +11.9% |
| 10 years | +175.3% | +311.1% | −135.8 pts | +10.7% | +15.2% |
Fifteen years at a glance
Fiscal years 2011 to 2025 and trailing twelve months, USD
Revenue
Gross profit
Net income
EPS, diluted
Press releases
Releases White Mountains Insurance filed with the SEC as exhibits to Form 8-K or 6-K
- Results
- Results
- Update
- Results
- News
- News
About White Mountains Insurance
Fire, Marine & Casualty Insurance
White Mountains Insurance Group, Ltd. acquires and operates businesses and assets within the insurance, financial services, and related industries. The company conducts operations primarily across property and casualty insurance and reinsurance, municipal bond guarantee reinsurance, capital solutions for wealth and asset managers, and specialty insurance distribution. Key product lines include specialty property, casualty, marine and energy, aviation, and accident and health coverages, alongside catastrophe reinsurance and structured financing solutions. Its offerings serve primary insurers, commercial enterprises, financial institutions, and specialized firms through independent brokers, wholesalers, and managing general agents.
Company profile, executives and historyWhite Mountains Insurance stock: common questions
What is White Mountains Insurance's stock price?
WTM closed at $2259.75 on Nov 11, 2026, down 0.89% on the day. Over the past 52 weeks it traded between $1870.00 and $2378.94.
What is White Mountains Insurance's market cap?
White Mountains Insurance was worth $5.39B at the close on Nov 11, 2026: the share price times the diluted shares outstanding.
What is WTM's P/E ratio?
WTM trades at 6.0 times earnings, based on diluted earnings per share of $377.74 over the twelve months to Sep 30, 2026.
How much revenue does White Mountains Insurance make?
White Mountains Insurance reported revenue of $3.61B for the twelve months to Sep 30, 2026, up 44.9% from a year earlier.
Does White Mountains Insurance pay a dividend?
Yes. White Mountains Insurance paid $1.00 per share over the last twelve months, a yield of 0.04% at the latest price.
When does White Mountains Insurance report earnings next?
White Mountains Insurance is expected to report Q4 FY2026 results on Feb 5, 2027, before the open. The date is estimated from its past reporting pattern until the company confirms it.
How has WTM stock performed over the past year?
Including dividends, WTM returned +17.4% over the past year, against +12.4% for the S&P 500.
How many WTM shares are sold short?
0M shares were sold short at the latest FINRA report, 5.56% of the float, or 5.8 days of average trading volume.
Who are White Mountains Insurance's competitors?
Companies most similar to White Mountains Insurance by business, industry and size include HG, AHL.PD, SPNT, PLGO, AXS.
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