White Mountains Insurance Group, Ltd. (WTM)
NYSE: WTM · Real-Time Price · USD
1,908.88
+12.67 (0.67%)
Oct 9, 2025, 10:59 AM EDT - Market open
WTM Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| 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 |
| Sep 11, 2025 | 1,752.00 | 1,774.51 | 1,752.00 | 1,774.51 | 1,774.51 | 0.80% | 33,590 |
| Sep 10, 2025 | 1,779.68 | 1,790.00 | 1,752.88 | 1,760.48 | 1,760.48 | -1.91% | 37,377 |
| Sep 9, 2025 | 1,767.16 | 1,800.06 | 1,762.71 | 1,794.69 | 1,794.69 | 1.56% | 82,797 |
| Sep 8, 2025 | 1,785.00 | 1,800.00 | 1,748.41 | 1,767.16 | 1,767.16 | -1.61% | 30,853 |
| Sep 5, 2025 | 1,797.67 | 1,816.00 | 1,792.00 | 1,796.03 | 1,796.03 | -0.25% | 20,905 |
| Sep 4, 2025 | 1,772.52 | 1,800.51 | 1,767.15 | 1,800.51 | 1,800.51 | 1.58% | 26,917 |
| Sep 3, 2025 | 1,795.00 | 1,819.69 | 1,763.92 | 1,772.52 | 1,772.52 | -3.49% | 32,332 |
| Sep 2, 2025 | 1,815.00 | 1,842.08 | 1,804.00 | 1,836.59 | 1,836.59 | 0.35% | 23,837 |
| Aug 29, 2025 | 1,837.00 | 1,839.31 | 1,830.18 | 1,830.18 | 1,830.18 | 0.26% | 20,507 |
| Aug 28, 2025 | 1,825.00 | 1,850.00 | 1,822.00 | 1,825.39 | 1,825.39 | -1.09% | 25,034 |
| Aug 27, 2025 | 1,838.14 | 1,850.82 | 1,824.30 | 1,845.42 | 1,845.42 | 0.53% | 37,180 |
| Aug 26, 2025 | 1,810.00 | 1,836.21 | 1,810.00 | 1,835.69 | 1,835.69 | 0.42% | 27,026 |
| Aug 25, 2025 | 1,830.00 | 1,840.00 | 1,809.90 | 1,828.05 | 1,828.05 | -1.89% | 24,360 |
| Aug 22, 2025 | 1,856.00 | 1,868.36 | 1,848.37 | 1,863.22 | 1,863.22 | 1.18% | 24,089 |
| Aug 21, 2025 | 1,832.31 | 1,847.39 | 1,831.00 | 1,841.41 | 1,841.41 | 0.25% | 20,379 |
| Aug 20, 2025 | 1,809.00 | 1,841.21 | 1,809.00 | 1,836.89 | 1,836.89 | 1.31% | 26,023 |
| Aug 19, 2025 | 1,777.38 | 1,813.53 | 1,777.38 | 1,813.09 | 1,813.09 | 2.81% | 28,565 |
| Aug 18, 2025 | 1,775.00 | 1,779.02 | 1,758.68 | 1,763.47 | 1,763.47 | -0.35% | 32,776 |
| Aug 15, 2025 | 1,838.00 | 1,848.31 | 1,762.71 | 1,769.60 | 1,769.60 | -4.05% | 41,912 |
| Aug 14, 2025 | 1,865.00 | 1,867.47 | 1,840.00 | 1,844.34 | 1,844.34 | -1.36% | 30,109 |
| Aug 13, 2025 | 1,837.55 | 1,880.11 | 1,819.00 | 1,869.81 | 1,869.81 | 2.48% | 21,933 |
| Aug 12, 2025 | 1,786.79 | 1,828.03 | 1,779.00 | 1,824.59 | 1,824.59 | 2.30% | 29,559 |
| Aug 11, 2025 | 1,746.00 | 1,791.18 | 1,744.00 | 1,783.51 | 1,783.51 | 1.82% | 37,429 |
| Aug 8, 2025 | 1,759.00 | 1,789.00 | 1,750.21 | 1,751.62 | 1,751.62 | 0.07% | 24,358 |
| Aug 7, 2025 | 1,770.11 | 1,776.92 | 1,747.60 | 1,750.35 | 1,750.35 | -1.82% | 49,066 |
| Aug 6, 2025 | 1,774.96 | 1,795.47 | 1,756.00 | 1,782.71 | 1,782.71 | -0.13% | 32,014 |
| Aug 5, 2025 | 1,779.43 | 1,788.30 | 1,777.24 | 1,785.01 | 1,785.01 | 0.59% | 21,222 |
| Aug 4, 2025 | 1,777.87 | 1,790.00 | 1,774.15 | 1,774.50 | 1,774.50 | -0.02% | 22,713 |
| Aug 1, 2025 | 1,779.93 | 1,779.93 | 1,762.00 | 1,774.87 | 1,774.87 | -0.72% | 16,873 |
| Jul 31, 2025 | 1,790.00 | 1,796.80 | 1,780.57 | 1,787.80 | 1,787.80 | 0.51% | 16,119 |
| Jul 30, 2025 | 1,796.00 | 1,801.00 | 1,773.20 | 1,778.73 | 1,778.73 | -1.01% | 15,594 |