NYSE:WTM | Historical Stock Price | WHITE MOUNTAINS INSURANCE GROUP LTD

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1985-10-23 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$22.92$60.30$158.65$417.40$1,098.17$2,889.271985-10-232026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2022

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2022-12-30$1,414.33$1,755.777,400
2022-12-29$1,395.01$1,731.788,100
2022-12-28$1,395.01$1,731.788,700
2022-12-27$1,395.48$1,732.368,600
2022-12-23$1,394.76$1,731.4710,100
2022-12-22$1,381.80$1,715.3810,600
2022-12-21$1,384.02$1,718.1415,100
2022-12-20$1,380.01$1,713.1621,300
2022-12-19$1,365.00$1,694.5318,300
2022-12-16$1,361.18$1,689.7833,200
2022-12-15$1,342.19$1,666.2117,600
2022-12-14$1,349.96$1,675.8612,400
2022-12-13$1,304.77$1,619.7610,700
2022-12-12$1,305.00$1,620.049,300
2022-12-09$1,304.33$1,619.217,600
2022-12-08$1,309.88$1,626.1011,700
2022-12-07$1,290.95$1,602.6010,500
2022-12-06$1,316.21$1,633.969,400
2022-12-05$1,331.55$1,653.009,800
2022-12-02$1,338.51$1,661.6419,000
2022-12-01$1,365.00$1,694.536,700
2022-11-30$1,358.86$1,686.9022,100
2022-11-29$1,418.69$1,761.1811,100
2022-11-28$1,422.81$1,766.2912,500
2022-11-25$1,401.77$1,740.176,900
2022-11-23$1,393.45$1,729.8410,600
2022-11-22$1,406.46$1,746.0012,700
2022-11-21$1,350.08$1,676.0013,700
2022-11-18$1,358.90$1,686.9511,900
2022-11-17$1,324.03$1,643.677,500
2022-11-16$1,332.86$1,654.6310,400
2022-11-15$1,320.85$1,639.7212,600
2022-11-14$1,301.32$1,615.478,300
2022-11-11$1,323.87$1,643.4713,400
2022-11-10$1,330.00$1,651.0811,500
2022-11-09$1,340.95$1,664.678,800
2022-11-08$1,351.18$1,677.376,400
2022-11-07$1,335.98$1,658.509,100
2022-11-04$1,341.09$1,664.845,500
2022-11-03$1,364.08$1,693.386,600
2022-11-02$1,397.61$1,735.015,300
2022-11-01$1,396.41$1,733.527,400
2022-10-31$1,416.15$1,758.0211,300
2022-10-28$1,396.24$1,733.3115,500
2022-10-27$1,377.51$1,710.067,400
2022-10-26$1,359.00$1,687.0815,100
2022-10-25$1,335.37$1,657.747,700
2022-10-24$1,320.60$1,639.416,200
2022-10-21$1,334.01$1,656.069,100
2022-10-20$1,362.50$1,691.4214,200
2022-10-19$1,365.99$1,695.766,400
2022-10-18$1,369.63$1,700.278,200
2022-10-17$1,366.11$1,695.9013,400
2022-10-14$1,356.83$1,684.388,900
2022-10-13$1,350.91$1,677.047,100
2022-10-12$1,317.03$1,634.986,900
2022-10-11$1,325.58$1,645.5910,900
2022-10-10$1,319.69$1,638.286,400
2022-10-07$1,315.70$1,633.326,900
2022-10-06$1,331.14$1,652.4913,500
2022-10-05$1,374.38$1,706.1712,400
2022-10-04$1,364.56$1,693.9811,900
2022-10-03$1,312.88$1,629.827,600
2022-09-30$1,303.02$1,617.5813,900
2022-09-29$1,288.92$1,600.0811,200
2022-09-28$1,284.31$1,594.3624,900
2022-09-27$1,256.70$1,560.0829,700
2022-09-26$1,176.95$1,461.0818,200
2022-09-23$1,221.76$1,516.7116,700
2022-09-22$1,252.85$1,555.3041,300
2022-09-21$1,366.79$1,696.7532,800
2022-09-20$1,387.64$1,722.6345,200
2022-09-19$1,389.10$1,724.4426,600
2022-09-16$1,382.15$1,715.8241,300
2022-09-15$1,376.00$1,708.1830,800
2022-09-14$1,373.73$1,705.3624,900
2022-09-13$1,366.95$1,696.9515,200
2022-09-12$1,368.70$1,699.1217,000
2022-09-09$1,369.70$1,700.3611,700
2022-09-08$1,393.48$1,729.8818,000
2022-09-07$1,377.26$1,709.7520,600
2022-09-06$1,360.59$1,689.0515,800
2022-09-02$1,359.01$1,687.0915,300
2022-09-01$1,359.87$1,688.1623,200
2022-08-31$1,370.00$1,700.7321,700
2022-08-30$1,372.19$1,703.4514,900
2022-08-29$1,371.01$1,701.9917,100
2022-08-26$1,364.85$1,694.3417,000
2022-08-25$1,359.24$1,687.3816,300
2022-08-24$1,353.37$1,680.0917,600
2022-08-23$1,350.00$1,675.9124,400
2022-08-22$1,347.66$1,673.0018,600
2022-08-19$1,305.13$1,620.206,900
2022-08-18$1,299.18$1,612.823,500
2022-08-17$1,294.34$1,606.816,400
2022-08-16$1,294.38$1,606.867,500
2022-08-15$1,295.49$1,608.248,500
2022-08-12$1,295.00$1,607.6314,300
2022-08-11$1,262.98$1,567.888,500
2022-08-10$1,247.40$1,548.548,100
2022-08-09$1,261.95$1,566.609,400
2022-08-08$1,241.82$1,541.6110,300
2022-08-05$1,250.47$1,552.357,400
2022-08-04$1,235.80$1,534.1412,400
2022-08-03$1,258.00$1,561.7010,200
2022-08-02$1,257.49$1,561.068,200
2022-08-01$1,263.80$1,568.9021,000
2022-07-29$1,239.43$1,538.6416,900
2022-07-28$1,229.15$1,525.8812,300
2022-07-27$1,243.05$1,543.149,600
2022-07-26$1,250.64$1,552.569,800
2022-07-25$1,235.02$1,533.1714,400
2022-07-22$1,227.05$1,523.2711,500
2022-07-21$1,229.19$1,525.9314,600
2022-07-20$1,226.16$1,522.1711,500
2022-07-19$1,242.16$1,542.037,900
2022-07-18$1,234.60$1,532.6510,600
2022-07-15$1,245.58$1,546.2810,700
2022-07-14$1,234.67$1,532.7318,300
2022-07-13$1,238.67$1,537.7011,400
2022-07-12$1,244.47$1,544.9012,400
2022-07-11$1,247.21$1,548.3013,500
2022-07-08$1,242.56$1,542.5311,600
2022-07-07$1,252.80$1,555.249,900
2022-07-06$1,270.21$1,576.8532,300
2022-07-05$1,238.83$1,537.9033,100
2022-07-01$1,259.14$1,563.1111,800
2022-06-30$1,246.13$1,546.9622,600
2022-06-29$1,229.18$1,525.9238,500
2022-06-28$1,256.09$1,559.3211,500
2022-06-27$1,282.66$1,592.3113,400
2022-06-24$1,277.96$1,586.4720,900
2022-06-23$1,240.77$1,540.3115,100
2022-06-22$1,235.65$1,533.9522,600
2022-06-21$1,217.92$1,511.9424,700
2022-06-17$1,216.08$1,509.6631,400
2022-06-16$1,229.44$1,526.2428,300
2022-06-15$1,241.70$1,541.4621,800
2022-06-14$1,232.20$1,529.6714,300
2022-06-13$1,200.46$1,490.2617,300
2022-06-10$1,230.23$1,527.2216,900
2022-06-09$1,241.04$1,540.6411,500
2022-06-08$1,249.77$1,551.4812,300
2022-06-07$1,277.65$1,586.0912,700
2022-06-06$1,261.21$1,565.6813,900
2022-06-03$1,253.00$1,555.497,100
2022-06-02$1,249.78$1,551.499,500
2022-06-01$1,262.26$1,566.9817,000
2022-05-31$1,244.86$1,545.3817,500
2022-05-27$1,251.33$1,553.4217,900
2022-05-26$1,224.06$1,519.5610,100
2022-05-25$1,223.71$1,519.1312,300
2022-05-24$1,190.38$1,477.7518,900
2022-05-23$1,183.03$1,468.638,300
2022-05-20$1,182.77$1,468.3016,100
2022-05-19$1,183.24$1,468.8924,500
2022-05-18$1,168.04$1,450.0213,600
2022-05-17$1,192.08$1,479.8612,200
2022-05-16$1,168.81$1,450.9710,400
2022-05-13$1,163.49$1,444.3717,200
2022-05-12$1,147.36$1,424.3524,500
2022-05-11$1,129.93$1,402.7113,500
2022-05-10$1,124.74$1,396.2622,300
2022-05-09$1,137.11$1,411.6228,900
2022-05-06$1,053.46$1,307.7814,700
2022-05-05$1,050.02$1,303.5112,200
2022-05-04$1,071.22$1,329.8210,800
2022-05-03$1,048.60$1,301.749,100
2022-05-02$1,050.10$1,303.6114,700
2022-04-29$1,048.02$1,301.0217,000
2022-04-28$1,071.93$1,330.7113,800
2022-04-27$1,048.91$1,302.1312,200
2022-04-26$1,054.42$1,308.9717,400
2022-04-25$1,061.25$1,317.4523,200
2022-04-22$1,041.57$1,293.0214,600
2022-04-21$1,069.38$1,327.5412,800
2022-04-20$1,074.89$1,334.389,900
2022-04-19$1,075.65$1,335.3211,000
2022-04-18$1,089.47$1,352.4810,400
2022-04-14$1,072.91$1,331.929,900
2022-04-13$1,075.63$1,335.309,700
2022-04-12$1,072.29$1,331.1513,500
2022-04-11$1,085.38$1,347.4010,600
2022-04-08$1,100.35$1,365.9911,000
2022-04-07$1,115.98$1,385.3921,400
2022-04-06$1,121.80$1,392.6219,100
2022-04-05$1,140.51$1,415.8428,000
2022-04-04$1,134.00$1,407.7637,300
2022-04-01$1,145.62$1,422.1941,700
2022-03-31$1,136.24$1,410.5427,400
2022-03-30$1,102.32$1,368.4310,900
2022-03-29$1,089.92$1,353.047,700
2022-03-28$1,079.22$1,339.768,700
2022-03-25$1,081.64$1,342.7611,000
2022-03-24$1,078.11$1,338.3810,100
2022-03-23$1,087.94$1,350.5814,000
2022-03-22$1,066.56$1,324.0413,200
2022-03-21$1,055.78$1,310.6612,900
2022-03-18$1,046.29$1,298.8819,800
2022-03-17$1,065.57$1,322.8110,600
2022-03-16$1,064.48$1,321.4616,300
2022-03-15$1,065.59$1,322.849,300
2022-03-14$1,050.86$1,304.559,700
2022-03-11$1,041.29$1,292.6713,500
2022-03-10$1,051.66$1,304.305,600
2022-03-09$1,062.87$1,318.2018,600
2022-03-08$1,032.65$1,280.7229,100
2022-03-07$1,038.48$1,287.9515,900
2022-03-04$1,056.57$1,310.3913,500
2022-03-03$1,054.35$1,307.6411,300
2022-03-02$1,050.95$1,303.4210,200
2022-03-01$1,030.64$1,278.2319,400
2022-02-28$1,050.20$1,302.4918,000
2022-02-25$1,056.47$1,310.2712,100
2022-02-24$1,037.83$1,287.1525,400
2022-02-23$1,032.05$1,279.9837,300
2022-02-22$1,030.22$1,277.7120,400
2022-02-18$1,037.12$1,286.2713,400
2022-02-17$1,042.39$1,292.8010,000
2022-02-16$1,059.84$1,314.455,800
2022-02-15$1,055.54$1,309.118,300
2022-02-14$1,049.34$1,301.4215,800
2022-02-11$1,055.54$1,309.1112,900
2022-02-10$1,051.64$1,304.2814,200
2022-02-09$1,055.10$1,308.5719,100
2022-02-08$1,043.50$1,294.1817,200
2022-02-07$1,034.01$1,282.416,000
2022-02-04$1,044.28$1,295.159,700
2022-02-03$1,055.04$1,308.4915,100
2022-02-02$1,050.54$1,302.9119,400
2022-02-01$1,049.50$1,301.6212,300
2022-01-31$1,040.96$1,291.0313,000
2022-01-28$1,024.32$1,270.3915,700
2022-01-27$1,013.00$1,256.3520,800
2022-01-26$1,012.51$1,255.7513,400
2022-01-25$1,008.01$1,250.1719,900
2022-01-24$1,006.37$1,248.1317,500
2022-01-21$1,022.68$1,268.3612,600
2022-01-20$1,029.37$1,276.6614,200
2022-01-19$1,029.13$1,276.3618,100
2022-01-18$1,043.91$1,294.6912,000
2022-01-14$1,043.01$1,293.5717,000
2022-01-13$1,034.90$1,283.514,300
2022-01-12$1,049.56$1,301.7016,500
2022-01-11$1,043.99$1,294.7912,300
2022-01-10$1,038.04$1,287.4116,700
2022-01-07$1,029.06$1,276.2716,600
2022-01-06$1,018.49$1,263.1614,800
2022-01-05$1,019.00$1,263.8039,200
2022-01-04$1,011.52$1,254.5228,900
2022-01-03$1,010.24$1,252.9313,600