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The series is stated in the current share scale after splits; dividends are not included in the price
White Mountains Insurance Group, Ltd. trades on NYSE under the ticker WTM. The company belongs to the Financials sector. The trading history on this page starts on 22 August 2016.
Over the past 52 weeks WTM has traded between 1,830 $ and 2,333 $. As of 09 October 2026 the price stood 45.67 % of the way from the 52-week low to the high.
Over one year WTM shares rose 8.11 %; over six months they fell 10.83 %. Volatility over 90 days is 18.20 %. Dividends are not included: this is price change only, as of 09 October 2026.
WTM trades at a price-to-earnings ratio of 4.9, below the sector median of 13.4. Price to sales is 1.4, below the sector median of 2.7. Price to book is 1.0, below the sector median of 1.3. Calculated from reports for the period ending 31 March 2026.
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| 08 October 2026 | 2,037 | 2,064 | 2,020 | 2,060 | 18,700 |
| 07 October 2026 | 2,064 | 2,064 | 2,029 | 2,032 | 20,400 |
| 06 October 2026 | 2,016 | 2,039 | 2,009 | 2,037 | 18,800 |
| 05 October 2026 | 2,032 | 2,046 |
Based on the last 12 months of reports, through 31 March 2026
The sector median covers every company in the sector on the US market, loss-making ones included.
White Mountains Insurance Group, Ltd. (WTM) is a public company in the financials sector. Its common stock trade on NYSE.
Over the trailing twelve months as reported to 2025-12-31, revenue was 3.7bn $, net income was 1.1bn $. Incorporated in BM.
This summary is compiled automatically from SEC filings and exchange data.
Address:23 SOUTH MAIN STREET SUITE 3B, HANOVER, NH, 03755, US
White Mountains Insurance Group, Ltd. reported revenue of 3.7B $ and net income of 1.0B $ over the last four quarters. Net margin is 28.44 %. Revenue changed by +69.33 % year over year. Earnings per share are 404.36 $. Market capitalisation is 5.1B $.
WTM has a return on equity of 19.45 %, above the sector median of 9.80 %. Return on assets is 7.94 %, above the sector median of 1.13 %.
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| HIGThe Hartford Insurance Group, Inc. | 129.11 | −0.29 % | 223M |
| 2,019 |
| 2,019 |
| 20,400 |
| 02 October 2026 | 2,012 | 2,035 | 2,002 | 2,021 | 16,300 |
| 01 October 2026 | 2,000 | 2,024 | 1,999 | 2,013 | 14,200 |
| 30 September 2026 | 2,028 | 2,028 | 1,997 | 2,006 | 15,700 |
| 29 September 2026 | 2,011 | 2,028 | 2,003 | 2,022 | 12,800 |
| 28 September 2026 | 2,036 | 2,036 | 2,001 | 2,015 | 15,100 |
| 25 September 2026 | 2,048 | 2,050 | 2,018 | 2,029 | 9,200 |
| 24 September 2026 | 2,056 | 2,056 | 2,029 | 2,029 | 11,000 |
| 23 September 2026 | 2,050 | 2,070 | 2,028 | 2,032 | 12,900 |
| 22 September 2026 | 2,057 | 2,067 | 2,038 | 2,054 | 16,100 |
| 21 September 2026 | 2,063 | 2,077 | 2,050 | 2,057 | 18,100 |
| 18 September 2026 | 2,053 | 2,084 | 2,029 | 2,061 | 39,100 |
| 17 September 2026 | 2,075 | 2,088 | 2,040 | 2,058 | 23,700 |
| 16 September 2026 | 2,041 | 2,074 | 2,040 | 2,062 | 33,000 |
| 15 September 2026 | 2,058 | 2,058 | 2,028 | 2,046 | 19,700 |
| 14 September 2026 | 2,069 | 2,070 | 2,045 | 2,057 | 17,300 |
| 11 September 2026 | 2,087 | 2,098 | 2,043 | 2,053 | 20,100 |