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White Mountains Insurance Group, Ltd. (WTM)
NYSE: WTM · Real-Time Price · USD
2,263.69
-3.87 (-0.17%)
At close: Apr 28, 2026, 4:00 PM EDT
2,265.01
+1.32 (0.06%)
After-hours: Apr 28, 2026, 7:00 PM EDT

WTM Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Apr 28, 20262,284.002,303.482,256.572,263.692,263.69-0.17%16,533
Apr 27, 20262,260.602,286.662,245.312,267.562,267.560.37%15,978
Apr 24, 20262,279.542,279.542,243.942,259.272,259.27-1.14%13,485
Apr 23, 20262,283.322,301.532,268.152,285.392,285.390.71%9,393
Apr 22, 20262,292.872,292.872,261.102,269.192,269.19-0.31%14,692
Apr 21, 20262,278.102,290.972,261.032,276.342,276.340.06%10,234
Apr 20, 20262,309.962,326.452,275.012,275.012,275.01-1.91%14,113
Apr 17, 20262,292.202,333.002,270.052,319.412,319.411.08%14,192
Apr 16, 20262,290.792,300.502,273.242,294.722,294.720.14%10,753
Apr 15, 20262,301.102,310.122,280.002,291.462,291.46-0.37%15,799
Apr 14, 20262,282.202,318.572,282.202,300.002,300.000.09%17,389
Apr 13, 20262,280.082,307.252,254.222,297.992,297.99-0.14%14,836
Apr 10, 20262,307.102,307.102,266.622,301.142,301.14-0.38%19,809
Apr 9, 20262,277.222,325.782,255.002,309.922,309.921.44%17,085
Apr 8, 20262,235.442,290.662,205.002,277.212,277.212.77%17,632
Apr 7, 20262,192.962,242.002,192.962,215.732,215.730.53%15,948
Apr 6, 20262,169.312,206.242,067.212,203.962,203.961.58%27,441
Apr 2, 20262,176.402,191.192,156.002,169.762,169.76-0.40%17,990
Apr 1, 20262,197.202,206.252,160.002,178.442,178.44-0.84%22,249
Mar 31, 20262,212.632,224.112,163.412,196.962,196.960.14%25,050
Mar 30, 20262,164.392,210.862,150.802,193.862,193.861.86%14,760
Mar 27, 20262,219.272,223.002,134.682,153.862,153.86-3.01%18,991
Mar 26, 20262,185.512,224.512,185.512,220.712,220.710.69%10,870
Mar 25, 20262,219.642,231.572,196.962,205.512,205.51-0.29%13,358
Mar 24, 20262,169.002,220.562,152.162,211.912,211.912.26%16,452
Mar 23, 20262,178.962,205.422,160.912,162.992,162.990.37%19,085
Mar 20, 20262,190.002,205.992,155.002,155.012,155.01-1.20%22,494
Mar 19, 20262,191.602,206.562,159.772,181.162,181.16-0.18%21,765
Mar 18, 20262,202.672,220.012,184.942,185.012,185.01-0.99%16,499
Mar 17, 20262,206.102,246.002,206.102,206.812,206.810.32%17,529
Mar 16, 20262,209.992,230.002,193.522,199.692,199.690.23%17,536
Mar 13, 20262,199.862,217.682,190.582,194.702,193.700.58%11,442
Mar 12, 20262,195.202,216.432,126.262,182.052,181.06-1.36%17,254
Mar 11, 20262,219.362,237.002,190.002,212.142,211.13-0.51%25,023
Mar 10, 20262,145.192,236.702,100.002,223.462,222.453.48%26,171
Mar 9, 20262,174.802,180.902,108.802,148.652,147.67-0.78%28,530
Mar 6, 20262,165.702,208.372,134.002,165.602,164.61-1.07%21,672
Mar 5, 20262,213.452,234.852,181.312,188.942,187.94-1.57%19,947
Mar 4, 20262,218.012,240.062,196.332,223.792,222.780.39%20,220
Mar 3, 20262,226.392,239.832,179.002,215.092,214.08-1.29%16,959
Mar 2, 20262,210.002,259.262,210.002,244.142,243.121.06%24,857
Feb 27, 20262,217.442,239.002,185.002,220.512,219.50-0.11%21,669
Feb 26, 20262,219.592,264.702,214.002,222.972,221.960.12%17,744
Feb 25, 20262,223.502,249.802,195.002,220.282,219.27-0.14%19,506
Feb 24, 20262,197.082,228.982,185.502,223.422,222.411.56%17,226
Feb 23, 20262,235.002,240.002,182.342,189.342,188.34-1.74%14,635
Feb 20, 20262,208.002,232.052,184.442,228.132,227.111.22%8,611
Feb 19, 20262,204.792,225.002,173.162,201.232,200.23-0.04%16,180
Feb 18, 20262,232.222,232.222,193.632,202.122,201.12-1.29%13,269
Feb 17, 20262,195.762,246.882,184.302,230.832,229.811.95%17,833
Feb 13, 20262,178.572,193.142,140.002,188.072,187.070.28%12,854
Feb 12, 20262,177.692,200.002,144.002,182.012,181.021.78%20,290
Feb 11, 20262,129.122,143.842,080.002,143.842,142.861.41%15,387
Feb 10, 20262,098.282,130.212,078.342,114.102,113.140.73%21,211
Feb 9, 20262,181.472,202.502,077.712,098.782,097.82-3.95%24,727
Feb 6, 20262,151.002,232.502,147.852,185.002,184.002.75%22,891
Feb 5, 20262,078.422,129.892,078.072,126.572,125.601.94%20,971
Feb 4, 20262,063.982,098.902,063.982,086.142,085.191.45%11,514
Feb 3, 20262,050.002,081.602,049.102,056.302,055.36-14,482
Feb 2, 20262,044.802,061.032,035.012,056.362,055.420.56%13,915
Jan 30, 20262,056.772,065.332,038.152,044.932,044.00-0.35%22,180
Jan 29, 20262,047.292,063.222,014.012,052.172,051.230.64%15,892
Jan 28, 20262,052.442,066.002,034.852,039.192,038.26-0.65%18,494
Jan 27, 20262,071.372,071.372,039.922,052.442,051.50-1.18%16,985
Jan 26, 20262,060.002,091.902,054.102,076.932,075.980.99%12,999
Jan 23, 20262,072.022,076.382,049.632,056.642,055.70-0.74%8,550
Jan 22, 20262,084.992,098.892,054.872,071.972,071.03-0.09%13,392
Jan 21, 20262,050.352,085.002,040.002,073.852,072.911.39%18,866
Jan 20, 20262,043.272,074.002,020.002,045.452,044.52-0.53%14,296
Jan 16, 20262,061.642,068.002,037.992,056.362,055.42-0.27%17,342
Jan 15, 20262,084.562,098.882,059.712,061.922,060.98-0.72%14,207
Jan 14, 20262,056.062,081.932,052.492,076.962,076.010.92%15,267
Jan 13, 20262,054.632,085.712,028.902,057.992,057.05-0.14%15,911
Jan 12, 20262,040.622,075.732,028.002,060.842,059.900.60%13,888
Jan 9, 20262,071.722,095.722,043.512,048.452,047.52-1.26%16,539
Jan 8, 20262,063.512,083.002,017.852,074.492,073.540.73%22,725
Jan 7, 20262,040.432,068.062,010.002,059.542,058.600.60%16,137
Jan 6, 20262,008.042,056.102,003.972,047.312,046.38-0.75%31,205
Jan 5, 20262,036.762,072.002,032.002,062.862,061.921.03%17,438
Jan 2, 20262,083.562,089.502,027.272,041.902,040.97-1.74%23,317
Dec 31, 20252,081.942,099.422,069.192,078.032,077.08-0.03%14,059
Dec 30, 20252,076.002,143.252,070.002,078.622,077.670.15%14,222
Dec 29, 20252,069.532,081.292,057.932,075.532,074.580.64%11,718
Dec 26, 20252,092.862,110.432,054.892,062.342,061.40-1.23%15,842
Dec 24, 20252,091.002,100.002,070.952,088.052,087.10-0.14%7,675
Dec 23, 20252,082.942,115.002,078.062,090.902,089.950.37%22,397
Dec 22, 20252,026.202,097.132,015.102,083.142,082.192.01%23,378
Dec 19, 20252,038.152,048.022,038.002,042.022,041.090.10%20,458
Dec 18, 20252,062.942,098.802,036.002,040.002,039.07-0.32%19,413
Dec 17, 20252,049.662,053.162,037.602,046.652,045.720.07%21,769
Dec 16, 20252,068.582,092.002,027.832,045.312,044.38-1.11%29,731
Dec 15, 20252,059.622,072.222,051.502,068.172,067.230.66%21,756
Dec 12, 20252,043.852,054.852,035.442,054.512,053.570.47%13,719
Dec 11, 20252,057.592,127.972,032.302,044.872,043.940.19%30,522
Dec 10, 20252,021.462,045.502,014.692,040.942,040.011.10%23,895
Dec 9, 20252,024.212,038.002,010.002,018.752,017.830.26%25,383
Dec 8, 20252,033.002,097.492,013.112,013.522,012.60-1.05%23,327
Dec 5, 20252,026.302,046.182,019.002,034.792,033.86-0.15%27,360
Dec 4, 20252,023.002,050.902,020.052,037.792,036.860.60%17,755
Dec 3, 20252,030.962,039.792,013.292,025.552,024.63-0.09%16,714