White Mountains Insurance Group, Ltd. (WTM)
NYSE: WTM · Real-Time Price · USD
1,881.61
-7.69 (-0.41%)
At close: Nov 20, 2025, 4:00 PM EST
1,880.50
-1.11 (-0.06%)
After-hours: Nov 20, 2025, 7:00 PM EST
WTM Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Nov 20, 2025 | 1,901.55 | 1,913.00 | 1,875.50 | 1,881.61 | 1,881.61 | -0.41% | 25,910 |
| Nov 19, 2025 | 1,901.30 | 1,909.89 | 1,870.00 | 1,889.30 | 1,889.30 | -0.58% | 20,702 |
| Nov 18, 2025 | 1,900.77 | 1,918.00 | 1,900.01 | 1,900.34 | 1,900.34 | 0.02% | 21,047 |
| Nov 17, 2025 | 1,931.89 | 1,943.46 | 1,900.00 | 1,900.00 | 1,900.00 | -1.28% | 13,610 |
| Nov 14, 2025 | 1,905.00 | 1,934.99 | 1,902.00 | 1,924.67 | 1,924.67 | 0.50% | 20,109 |
| Nov 13, 2025 | 1,929.38 | 1,941.13 | 1,911.42 | 1,915.09 | 1,915.09 | -1.00% | 18,377 |
| Nov 12, 2025 | 1,930.55 | 1,949.89 | 1,915.46 | 1,934.47 | 1,934.47 | 0.49% | 16,488 |
| Nov 11, 2025 | 1,906.90 | 1,935.39 | 1,902.00 | 1,925.01 | 1,925.01 | 1.22% | 15,829 |
| Nov 10, 2025 | 1,905.80 | 1,921.05 | 1,899.58 | 1,901.76 | 1,901.76 | -0.35% | 19,348 |
| Nov 7, 2025 | 1,895.00 | 1,928.75 | 1,893.02 | 1,908.46 | 1,908.46 | 0.87% | 25,051 |
| Nov 6, 2025 | 1,901.10 | 1,923.74 | 1,888.00 | 1,892.02 | 1,892.02 | -0.28% | 30,319 |
| Nov 5, 2025 | 1,897.96 | 1,925.90 | 1,894.24 | 1,897.42 | 1,897.42 | -1.21% | 17,184 |
| Nov 4, 2025 | 1,900.20 | 1,929.20 | 1,891.83 | 1,920.60 | 1,920.60 | 1.09% | 28,177 |
| Nov 3, 2025 | 1,900.75 | 1,917.75 | 1,863.60 | 1,899.87 | 1,899.87 | -0.25% | 36,682 |
| Oct 31, 2025 | 1,902.43 | 1,920.00 | 1,890.00 | 1,904.56 | 1,904.56 | -0.13% | 27,799 |
| Oct 30, 2025 | 1,905.20 | 1,930.50 | 1,903.25 | 1,907.00 | 1,907.00 | 0.47% | 19,318 |
| Oct 29, 2025 | 1,914.54 | 1,914.54 | 1,897.23 | 1,897.99 | 1,897.99 | -0.17% | 22,290 |
| Oct 28, 2025 | 1,909.00 | 1,925.00 | 1,898.96 | 1,901.30 | 1,901.30 | -1.63% | 29,455 |
| Oct 27, 2025 | 1,917.00 | 1,941.89 | 1,917.00 | 1,932.90 | 1,932.90 | 0.87% | 23,578 |
| Oct 24, 2025 | 1,950.00 | 1,957.68 | 1,908.54 | 1,916.14 | 1,916.14 | -1.12% | 26,712 |
| Oct 23, 2025 | 1,911.00 | 1,946.40 | 1,900.26 | 1,937.93 | 1,937.93 | 1.88% | 30,222 |
| Oct 22, 2025 | 1,916.00 | 1,927.73 | 1,900.82 | 1,902.19 | 1,902.19 | -0.97% | 24,507 |
| Oct 21, 2025 | 1,931.62 | 1,945.00 | 1,920.91 | 1,920.91 | 1,920.91 | -0.59% | 17,071 |
| Oct 20, 2025 | 1,926.00 | 1,940.71 | 1,926.00 | 1,932.23 | 1,932.23 | 0.99% | 19,132 |
| Oct 17, 2025 | 1,830.13 | 1,917.38 | 1,830.13 | 1,913.20 | 1,913.20 | 3.55% | 32,740 |
| Oct 16, 2025 | 1,887.11 | 1,893.06 | 1,836.71 | 1,847.67 | 1,847.67 | -2.34% | 36,108 |
| Oct 15, 2025 | 1,931.79 | 1,939.50 | 1,890.29 | 1,892.01 | 1,892.01 | -2.12% | 36,283 |
| Oct 14, 2025 | 1,913.50 | 1,936.54 | 1,907.02 | 1,933.01 | 1,933.01 | 1.56% | 23,331 |
| Oct 13, 2025 | 1,893.30 | 1,925.51 | 1,893.30 | 1,903.24 | 1,903.24 | 0.28% | 38,260 |
| Oct 10, 2025 | 1,932.67 | 1,936.00 | 1,891.26 | 1,898.00 | 1,898.00 | -1.18% | 21,242 |
| Oct 9, 2025 | 1,901.00 | 1,926.74 | 1,899.76 | 1,920.68 | 1,920.68 | 1.29% | 23,118 |
| Oct 8, 2025 | 1,900.00 | 1,905.00 | 1,892.00 | 1,896.20 | 1,896.20 | -0.47% | 38,248 |
| Oct 7, 2025 | 1,864.00 | 1,908.65 | 1,815.44 | 1,905.23 | 1,905.23 | 2.19% | 39,783 |
| Oct 6, 2025 | 1,828.04 | 1,868.48 | 1,827.00 | 1,864.48 | 1,864.48 | 1.26% | 51,488 |
| Oct 3, 2025 | 1,784.78 | 1,866.22 | 1,784.78 | 1,841.34 | 1,841.34 | 10.62% | 88,802 |
| Oct 2, 2025 | 1,651.14 | 1,678.88 | 1,650.00 | 1,664.56 | 1,664.56 | 0.85% | 28,856 |
| Oct 1, 2025 | 1,670.00 | 1,670.00 | 1,648.00 | 1,650.50 | 1,650.50 | -1.26% | 27,615 |
| Sep 30, 2025 | 1,663.71 | 1,678.88 | 1,663.71 | 1,671.52 | 1,671.52 | -0.37% | 33,761 |
| Sep 29, 2025 | 1,718.30 | 1,718.30 | 1,659.17 | 1,677.70 | 1,677.70 | -2.23% | 50,398 |
| Sep 26, 2025 | 1,694.95 | 1,736.00 | 1,694.95 | 1,715.94 | 1,715.94 | 1.58% | 32,314 |
| Sep 25, 2025 | 1,755.00 | 1,755.00 | 1,687.47 | 1,689.22 | 1,689.22 | -3.86% | 31,167 |
| Sep 24, 2025 | 1,759.00 | 1,783.50 | 1,755.70 | 1,756.99 | 1,756.99 | -0.48% | 27,496 |
| Sep 23, 2025 | 1,764.11 | 1,781.09 | 1,762.60 | 1,765.52 | 1,765.52 | -0.02% | 38,309 |
| Sep 22, 2025 | 1,760.00 | 1,768.00 | 1,749.67 | 1,765.90 | 1,765.90 | -0.22% | 35,467 |
| Sep 19, 2025 | 1,751.35 | 1,776.22 | 1,735.00 | 1,769.87 | 1,769.87 | 0.93% | 45,923 |
| Sep 18, 2025 | 1,721.00 | 1,760.71 | 1,715.00 | 1,753.62 | 1,753.62 | 1.78% | 32,919 |
| Sep 17, 2025 | 1,724.00 | 1,728.48 | 1,711.39 | 1,722.98 | 1,722.98 | 0.44% | 29,403 |
| Sep 16, 2025 | 1,712.78 | 1,719.40 | 1,700.00 | 1,715.50 | 1,715.50 | 0.01% | 29,377 |
| Sep 15, 2025 | 1,760.00 | 1,772.00 | 1,711.28 | 1,715.40 | 1,715.40 | -2.69% | 40,379 |
| Sep 12, 2025 | 1,765.00 | 1,785.77 | 1,762.81 | 1,762.81 | 1,762.81 | -0.66% | 26,557 |