White Mountains Insurance Group, Ltd. (WTM)
NYSE: WTM · Real-Time Price · USD
2,319.41
+24.69 (1.08%)
Apr 17, 2026, 4:00 PM EDT - Market closed
WTM Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Apr 17, 2026 | 2,292.20 | 2,333.00 | 2,270.05 | 2,319.41 | 2,319.41 | 1.08% | 14,192 |
| Apr 16, 2026 | 2,290.79 | 2,300.50 | 2,273.24 | 2,294.72 | 2,294.72 | 0.14% | 10,753 |
| Apr 15, 2026 | 2,301.10 | 2,310.12 | 2,280.00 | 2,291.46 | 2,291.46 | -0.37% | 15,799 |
| Apr 14, 2026 | 2,282.20 | 2,318.57 | 2,282.20 | 2,300.00 | 2,300.00 | 0.09% | 17,389 |
| Apr 13, 2026 | 2,280.08 | 2,307.25 | 2,254.22 | 2,297.99 | 2,297.99 | -0.14% | 14,836 |
| Apr 10, 2026 | 2,307.10 | 2,307.10 | 2,266.62 | 2,301.14 | 2,301.14 | -0.38% | 19,809 |
| Apr 9, 2026 | 2,277.22 | 2,325.78 | 2,255.00 | 2,309.92 | 2,309.92 | 1.44% | 17,085 |
| Apr 8, 2026 | 2,235.44 | 2,290.66 | 2,205.00 | 2,277.21 | 2,277.21 | 2.77% | 17,632 |
| Apr 7, 2026 | 2,192.96 | 2,242.00 | 2,192.96 | 2,215.73 | 2,215.73 | 0.53% | 15,948 |
| Apr 6, 2026 | 2,169.31 | 2,206.24 | 2,067.21 | 2,203.96 | 2,203.96 | 1.58% | 27,441 |
| Apr 2, 2026 | 2,176.40 | 2,191.19 | 2,156.00 | 2,169.76 | 2,169.76 | -0.40% | 17,990 |
| Apr 1, 2026 | 2,197.20 | 2,206.25 | 2,160.00 | 2,178.44 | 2,178.44 | -0.84% | 22,249 |
| Mar 31, 2026 | 2,212.63 | 2,224.11 | 2,163.41 | 2,196.96 | 2,196.96 | 0.14% | 25,050 |
| Mar 30, 2026 | 2,164.39 | 2,210.86 | 2,150.80 | 2,193.86 | 2,193.86 | 1.86% | 14,760 |
| Mar 27, 2026 | 2,219.27 | 2,223.00 | 2,134.68 | 2,153.86 | 2,153.86 | -3.01% | 18,991 |
| Mar 26, 2026 | 2,185.51 | 2,224.51 | 2,185.51 | 2,220.71 | 2,220.71 | 0.69% | 10,870 |
| Mar 25, 2026 | 2,219.64 | 2,231.57 | 2,196.96 | 2,205.51 | 2,205.51 | -0.29% | 13,358 |
| Mar 24, 2026 | 2,169.00 | 2,220.56 | 2,152.16 | 2,211.91 | 2,211.91 | 2.26% | 16,452 |
| Mar 23, 2026 | 2,178.96 | 2,205.42 | 2,160.91 | 2,162.99 | 2,162.99 | 0.37% | 19,085 |
| Mar 20, 2026 | 2,190.00 | 2,205.99 | 2,155.00 | 2,155.01 | 2,155.01 | -1.20% | 22,494 |
| Mar 19, 2026 | 2,191.60 | 2,206.56 | 2,159.77 | 2,181.16 | 2,181.16 | -0.18% | 21,765 |
| Mar 18, 2026 | 2,202.67 | 2,220.01 | 2,184.94 | 2,185.01 | 2,185.01 | -0.99% | 16,499 |
| Mar 17, 2026 | 2,206.10 | 2,246.00 | 2,206.10 | 2,206.81 | 2,206.81 | 0.32% | 17,529 |
| Mar 16, 2026 | 2,209.99 | 2,230.00 | 2,193.52 | 2,199.69 | 2,199.69 | 0.23% | 17,536 |
| Mar 13, 2026 | 2,199.86 | 2,217.68 | 2,190.58 | 2,194.70 | 2,193.70 | 0.58% | 11,442 |
| Mar 12, 2026 | 2,195.20 | 2,216.43 | 2,126.26 | 2,182.05 | 2,181.06 | -1.36% | 17,254 |
| Mar 11, 2026 | 2,219.36 | 2,237.00 | 2,190.00 | 2,212.14 | 2,211.13 | -0.51% | 25,023 |
| Mar 10, 2026 | 2,145.19 | 2,236.70 | 2,100.00 | 2,223.46 | 2,222.45 | 3.48% | 26,171 |
| Mar 9, 2026 | 2,174.80 | 2,180.90 | 2,108.80 | 2,148.65 | 2,147.67 | -0.78% | 28,530 |
| Mar 6, 2026 | 2,165.70 | 2,208.37 | 2,134.00 | 2,165.60 | 2,164.61 | -1.07% | 21,672 |
| Mar 5, 2026 | 2,213.45 | 2,234.85 | 2,181.31 | 2,188.94 | 2,187.94 | -1.57% | 19,947 |
| Mar 4, 2026 | 2,218.01 | 2,240.06 | 2,196.33 | 2,223.79 | 2,222.78 | 0.39% | 20,220 |
| Mar 3, 2026 | 2,226.39 | 2,239.83 | 2,179.00 | 2,215.09 | 2,214.08 | -1.29% | 16,959 |
| Mar 2, 2026 | 2,210.00 | 2,259.26 | 2,210.00 | 2,244.14 | 2,243.12 | 1.06% | 24,857 |
| Feb 27, 2026 | 2,217.44 | 2,239.00 | 2,185.00 | 2,220.51 | 2,219.50 | -0.11% | 21,669 |
| Feb 26, 2026 | 2,219.59 | 2,264.70 | 2,214.00 | 2,222.97 | 2,221.96 | 0.12% | 17,744 |
| Feb 25, 2026 | 2,223.50 | 2,249.80 | 2,195.00 | 2,220.28 | 2,219.27 | -0.14% | 19,506 |
| Feb 24, 2026 | 2,197.08 | 2,228.98 | 2,185.50 | 2,223.42 | 2,222.41 | 1.56% | 17,226 |
| Feb 23, 2026 | 2,235.00 | 2,240.00 | 2,182.34 | 2,189.34 | 2,188.34 | -1.74% | 14,635 |
| Feb 20, 2026 | 2,208.00 | 2,232.05 | 2,184.44 | 2,228.13 | 2,227.11 | 1.22% | 8,611 |
| Feb 19, 2026 | 2,204.79 | 2,225.00 | 2,173.16 | 2,201.23 | 2,200.23 | -0.04% | 16,180 |
| Feb 18, 2026 | 2,232.22 | 2,232.22 | 2,193.63 | 2,202.12 | 2,201.12 | -1.29% | 13,269 |
| Feb 17, 2026 | 2,195.76 | 2,246.88 | 2,184.30 | 2,230.83 | 2,229.81 | 1.95% | 17,833 |
| Feb 13, 2026 | 2,178.57 | 2,193.14 | 2,140.00 | 2,188.07 | 2,187.07 | 0.28% | 12,854 |
| Feb 12, 2026 | 2,177.69 | 2,200.00 | 2,144.00 | 2,182.01 | 2,181.02 | 1.78% | 20,290 |
| Feb 11, 2026 | 2,129.12 | 2,143.84 | 2,080.00 | 2,143.84 | 2,142.86 | 1.41% | 15,387 |
| Feb 10, 2026 | 2,098.28 | 2,130.21 | 2,078.34 | 2,114.10 | 2,113.14 | 0.73% | 21,211 |
| Feb 9, 2026 | 2,181.47 | 2,202.50 | 2,077.71 | 2,098.78 | 2,097.82 | -3.95% | 24,727 |
| Feb 6, 2026 | 2,151.00 | 2,232.50 | 2,147.85 | 2,185.00 | 2,184.00 | 2.75% | 22,891 |
| Feb 5, 2026 | 2,078.42 | 2,129.89 | 2,078.07 | 2,126.57 | 2,125.60 | 1.94% | 20,971 |