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White Mountains Insurance Group, Ltd. (WTM)
NYSE: WTM · Real-Time Price · USD
2,225.24
-22.28 (-0.99%)
At close: Oct 23, 2026, 4:00 PM EDT
2,245.00
+19.76 (0.89%)
After-hours: Oct 23, 2026, 7:59 PM EDT

WTM Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 23, 20262,236.732,247.222,218.212,225.242,225.24-0.99%20,276
Oct 22, 20262,220.102,252.422,200.362,247.522,247.521.70%21,788
Oct 21, 20262,216.662,224.782,162.002,209.952,209.95-0.17%28,415
Oct 20, 20262,179.002,236.122,179.002,213.612,213.612.15%27,467
Oct 19, 20262,147.102,177.632,147.102,167.122,167.120.32%16,980
Oct 16, 20262,146.232,172.042,137.932,160.312,160.310.77%21,793
Oct 15, 20262,124.972,152.252,109.002,143.732,143.732.18%30,223
Oct 14, 20262,100.302,106.612,069.252,098.012,098.010.23%18,783
Oct 13, 20262,100.632,101.502,079.042,093.132,093.130.31%16,099
Oct 12, 20262,069.072,098.452,064.962,086.762,086.761.27%24,507
Oct 9, 20262,059.072,066.632,046.412,060.632,060.630.04%20,112
Oct 8, 20262,036.572,064.042,020.112,059.772,059.771.39%18,707
Oct 7, 20262,064.012,064.012,029.362,031.502,031.50-0.28%20,340
Oct 6, 20262,015.642,038.782,008.992,037.252,037.250.88%18,746
Oct 5, 20262,031.812,046.092,019.442,019.442,019.44-0.07%20,351
Oct 2, 20262,012.302,034.902,002.292,020.922,020.920.39%16,300
Oct 1, 20261,999.982,023.861,999.222,013.042,013.040.33%14,221
Sep 30, 20262,028.442,028.441,997.132,006.492,006.49-0.74%15,661
Sep 29, 20262,010.772,028.012,002.612,021.512,021.510.32%12,824
Sep 28, 20262,035.502,035.502,000.842,014.972,014.97-0.67%15,110
Sep 25, 20262,047.992,049.992,018.272,028.622,028.62-0.03%9,212
Sep 24, 20262,056.012,056.012,029.332,029.332,029.33-0.13%10,923
Sep 23, 20262,049.762,069.892,028.112,032.012,032.01-1.05%12,906
Sep 22, 20262,056.852,067.182,037.582,053.642,053.64-0.16%16,122
Sep 21, 20262,062.782,076.532,049.622,056.852,056.85-0.22%17,752
Sep 18, 20262,052.912,084.142,029.152,061.302,061.300.14%38,949
Sep 17, 20262,075.002,088.292,039.972,058.322,058.32-0.20%22,745
Sep 16, 20262,041.022,074.412,040.012,062.372,062.370.80%32,823
Sep 15, 20262,057.632,057.632,027.642,045.942,045.94-0.54%19,601
Sep 14, 20262,068.772,070.022,045.032,057.002,057.000.19%17,261
Sep 11, 20262,086.682,098.402,042.592,053.152,053.15-1.10%20,087
Sep 10, 20262,062.202,084.132,043.152,075.992,075.991.23%30,072
Sep 9, 20262,051.632,055.702,037.002,050.812,050.81-0.08%16,400
Sep 8, 20262,083.322,091.422,050.012,052.482,052.48-2.43%27,066
Sep 4, 20262,100.002,117.802,073.352,103.492,103.49-0.41%24,920
Sep 3, 20262,115.002,139.892,081.012,112.232,112.230.36%21,772
Sep 2, 20262,099.032,129.102,088.332,104.752,104.750.28%20,086
Sep 1, 20262,107.852,125.762,093.432,098.962,098.96-0.15%22,104
Aug 31, 20262,130.432,135.002,093.552,102.012,102.01-1.56%21,810
Aug 28, 20262,133.032,150.002,117.492,135.412,135.410.37%18,405
Aug 27, 20262,125.012,145.002,105.612,127.572,127.57-0.24%23,494
Aug 26, 20262,134.742,165.002,126.922,132.742,132.74-0.40%16,135
Aug 25, 20262,135.752,146.042,120.002,141.202,141.200.42%13,651
Aug 24, 20262,100.082,146.502,100.082,132.302,132.301.01%19,596
Aug 21, 20262,101.862,140.302,101.862,110.952,110.95-0.32%28,883
Aug 20, 20262,123.902,131.842,095.012,117.702,117.70-0.54%21,207
Aug 19, 20262,130.792,150.842,107.662,129.202,129.20-0.76%20,037
Aug 18, 20262,125.492,157.702,090.002,145.462,145.461.52%22,558
Aug 17, 20262,130.232,145.482,107.782,113.402,113.40-1.11%17,006
Aug 14, 20262,137.822,145.002,121.092,137.122,137.12-0.20%14,171