5 DAY PERFORMANCE
+0.63%
1 MONTH PERFORMANCE
+7.08%
3 MONTH PERFORMANCE
+15.87%
6 MONTH PERFORMANCE
+24.86%
YEAR-TO-DATE PERFORMANCE
+5.96%
1 YEAR PERFORMANCE
+17.64%
White Mountains Insurance Group, Ltd. Stock Chart
Share Price History
| Date | Opening Price | Closing Price | High | Low | Volume | Market Capitalization |
|---|---|---|---|---|---|---|
| 02/18/2026 | $2,232.22 | $2,202.12 (-1.35%) | $2,232.22 | $2,193.63 | 13.27 K | $5.62 B |
| 02/17/2026 | $2,195.76 | $2,230.83 (1.6%) | $2,246.88 | $2,184.30 | 17.83 K | $5.70 B |
| 02/13/2026 | $2,178.57 | $2,188.07 (0.44%) | $2,193.14 | $2,140.00 | 12.90 K | $5.59 B |
| 02/12/2026 | $2,177.69 | $2,182.01 (0.2%) | $2,200.00 | $2,144.00 | 20.30 K | $5.57 B |
| 02/11/2026 | $2,129.12 | $2,143.84 (0.69%) | $2,143.84 | $2,080.00 | 15.40 K | $5.48 B |
| 02/10/2026 | $2,098.28 | $2,114.10 (0.75%) | $2,130.21 | $2,078.34 | 21.21 K | $5.40 B |
| 02/09/2026 | $2,181.47 | $2,098.78 (-3.79%) | $2,202.50 | $2,077.71 | 24.73 K | $5.36 B |
| 02/06/2026 | $2,151.00 | $2,185.00 (1.58%) | $2,232.50 | $2,147.85 | 22.90 K | $5.58 B |
| 02/05/2026 | $2,078.42 | $2,126.57 (2.32%) | $2,129.89 | $2,078.07 | 21.00 K | $5.40 B |
| 02/04/2026 | $2,063.98 | $2,086.14 (1.07%) | $2,098.90 | $2,063.98 | 11.51 K | $5.30 B |
| 02/03/2026 | $2,050.00 | $2,056.30 (0.31%) | $2,081.59 | $2,049.09 | 14.50 K | $5.23 B |
| 02/02/2026 | $2,044.80 | $2,056.36 (0.57%) | $2,061.03 | $2,035.01 | 13.92 K | $5.23 B |
| 01/30/2026 | $2,056.77 | $2,044.93 (-0.58%) | $2,065.33 | $2,038.15 | 22.20 K | $5.20 B |
| 01/29/2026 | $2,047.29 | $2,052.17 (0.24%) | $2,063.22 | $2,014.01 | 15.90 K | $5.22 B |
| 01/28/2026 | $2,052.44 | $2,039.19 (-0.65%) | $2,066.00 | $2,034.85 | 18.50 K | $5.18 B |
| 01/27/2026 | $2,071.37 | $2,052.44 (-0.91%) | $2,071.37 | $2,039.92 | 17.00 K | $5.22 B |
| 01/26/2026 | $2,060.00 | $2,076.93 (0.82%) | $2,091.90 | $2,054.10 | 13.00 K | $5.28 B |
| 01/23/2026 | $2,072.02 | $2,056.64 (-0.74%) | $2,076.38 | $2,049.63 | 8.60 K | $5.23 B |
| 01/22/2026 | $2,084.99 | $2,071.97 (-0.62%) | $2,098.89 | $2,054.87 | 13.40 K | $5.27 B |
| 01/21/2026 | $2,050.35 | $2,073.85 (1.15%) | $2,085.00 | $2,040.00 | 18.90 K | $5.27 B |
| 01/20/2026 | $2,043.27 | $2,045.45 (0.11%) | $2,074.00 | $2,020.00 | 14.30 K | $5.20 B |
| 01/16/2026 | $2,061.64 | $2,056.36 (-0.26%) | $2,068.00 | $2,037.99 | 17.34 K | $5.23 B |
| 01/15/2026 | $2,084.56 | $2,061.92 (-1.09%) | $2,098.88 | $2,059.71 | 14.21 K | $5.24 B |
| 01/14/2026 | $2,056.06 | $2,076.96 (1.02%) | $2,081.93 | $2,052.49 | 15.30 K | $5.28 B |
| 01/13/2026 | $2,054.63 | $2,057.99 (0.16%) | $2,085.71 | $2,028.90 | 15.91 K | $5.23 B |
| 01/12/2026 | $2,040.62 | $2,060.84 (0.99%) | $2,075.73 | $2,028.00 | 13.90 K | $5.24 B |
| 01/09/2026 | $2,071.72 | $2,048.45 (-1.12%) | $2,095.72 | $2,043.51 | 16.54 K | $5.21 B |
| 01/08/2026 | $2,063.51 | $2,074.49 (0.53%) | $2,083.00 | $2,017.85 | 22.73 K | $5.27 B |
| 01/07/2026 | $2,040.43 | $2,059.54 (0.94%) | $2,068.06 | $2,010.00 | 16.14 K | $5.23 B |
| 01/06/2026 | $2,008.04 | $2,047.31 (1.96%) | $2,056.10 | $2,003.97 | 31.21 K | $5.20 B |
| 01/05/2026 | $2,036.76 | $2,062.86 (1.28%) | $2,072.00 | $2,032.00 | 17.44 K | $5.24 B |
| 01/02/2026 | $2,083.56 | $2,041.90 (-2%) | $2,089.50 | $2,027.27 | 23.32 K | $5.19 B |
| 12/31/2025 | $2,081.94 | $2,078.03 (-0.19%) | $2,099.42 | $2,069.19 | 14.10 K | $5.28 B |
| 12/30/2025 | $2,076.00 | $2,078.62 (0.13%) | $2,143.25 | $2,070.00 | 14.22 K | $5.28 B |
| 12/29/2025 | $2,069.53 | $2,075.53 (0.29%) | $2,081.29 | $2,057.93 | 11.72 K | $5.27 B |
| 12/26/2025 | $2,092.86 | $2,062.34 (-1.46%) | $2,110.43 | $2,054.89 | 15.84 K | $5.24 B |
| 12/24/2025 | $2,091.00 | $2,088.05 (-0.14%) | $2,100.00 | $2,070.95 | 7.70 K | $5.31 B |
| 12/23/2025 | $2,082.94 | $2,090.90 (0.38%) | $2,115.00 | $2,078.06 | 22.40 K | $5.31 B |
| 12/22/2025 | $2,026.20 | $2,083.14 (2.81%) | $2,097.13 | $2,015.10 | 23.38 K | $5.29 B |
| 12/19/2025 | $2,038.15 | $2,042.02 (0.19%) | $2,048.02 | $2,038.00 | 20.50 K | $5.19 B |
| 12/18/2025 | $2,062.94 | $2,040.00 (-1.11%) | $2,098.80 | $2,036.00 | 19.41 K | $5.18 B |
| 12/17/2025 | $2,049.66 | $2,046.65 (-0.15%) | $2,053.16 | $2,037.60 | 21.80 K | $5.20 B |
| 12/16/2025 | $2,068.58 | $2,045.31 (-1.12%) | $2,092.00 | $2,027.83 | 29.73 K | $5.20 B |
| 12/15/2025 | $2,059.62 | $2,068.17 (0.42%) | $2,072.22 | $2,051.50 | 21.80 K | $5.26 B |
| 12/12/2025 | $2,043.85 | $2,054.51 (0.52%) | $2,054.85 | $2,035.44 | 13.72 K | $5.22 B |
| 12/11/2025 | $2,057.59 | $2,044.87 (-0.62%) | $2,127.97 | $2,032.30 | 30.52 K | $5.20 B |
| 12/10/2025 | $2,021.46 | $2,040.94 (0.96%) | $2,045.50 | $2,014.69 | 23.90 K | $5.19 B |
| 12/09/2025 | $2,024.21 | $2,018.75 (-0.27%) | $2,038.00 | $2,010.00 | 25.40 K | $5.13 B |
| 12/08/2025 | $2,033.00 | $2,013.52 (-0.96%) | $2,097.49 | $2,013.11 | 23.33 K | $5.12 B |
| 12/05/2025 | $2,026.30 | $2,034.79 (0.42%) | $2,046.18 | $2,019.00 | 27.40 K | $5.17 B |
| 12/04/2025 | $2,023.00 | $2,037.79 (0.73%) | $2,050.90 | $2,020.05 | 17.80 K | $5.18 B |
| 12/03/2025 | $2,030.96 | $2,025.55 (-0.27%) | $2,039.79 | $2,013.29 | 16.71 K | $5.15 B |
| 12/02/2025 | $2,025.20 | $2,027.41 (0.11%) | $2,041.50 | $2,022.30 | 25.83 K | $5.15 B |
| 12/01/2025 | $2,028.22 | $2,024.89 (-0.16%) | $2,048.77 | $2,018.27 | 15.25 K | $5.15 B |
| 11/28/2025 | $2,030.44 | $2,024.25 (-0.3%) | $2,042.89 | $2,023.45 | 9.32 K | $5.14 B |
| 11/26/2025 | $2,005.00 | $2,029.06 (1.2%) | $2,037.35 | $2,004.18 | 13.50 K | $5.16 B |
| 11/25/2025 | $2,000.84 | $2,003.65 (0.14%) | $2,030.40 | $2,000.00 | 14.53 K | $5.09 B |
| 11/24/2025 | $1,992.82 | $1,996.99 (0.21%) | $2,002.35 | $1,961.00 | 24.56 K | $5.08 B |
| 11/21/2025 | $1,959.00 | $2,000.00 (2.09%) | $2,013.05 | $1,959.00 | 26.64 K | $5.08 B |
| 11/20/2025 | $1,901.55 | $1,881.61 (-1.05%) | $1,913.00 | $1,875.50 | 26.31 K | $4.78 B |
| 11/19/2025 | $1,901.30 | $1,889.30 (-0.63%) | $1,909.89 | $1,870.00 | 20.70 K | $4.80 B |
| 11/18/2025 | $1,900.77 | $1,900.34 (-0.02%) | $1,918.00 | $1,900.01 | 21.05 K | $4.83 B |
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