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.

View year

Historical Stock Price — 2023

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2023-12-29$1,505.01$1,869.717,100
2023-12-28$1,489.42$1,850.347,800
2023-12-27$1,475.02$1,832.455,800
2023-12-26$1,469.70$1,825.846,100
2023-12-22$1,480.64$1,839.4312,100
2023-12-21$1,442.27$1,791.767,000
2023-12-20$1,442.36$1,791.8735,400
2023-12-19$1,498.00$1,861.007,100
2023-12-18$1,460.77$1,814.757,200
2023-12-15$1,437.78$1,786.1919,600
2023-12-14$1,464.72$1,819.6512,400
2023-12-13$1,499.33$1,862.658,100
2023-12-12$1,500.95$1,864.665,100
2023-12-11$1,487.76$1,848.286,400
2023-12-08$1,483.12$1,842.517,400
2023-12-07$1,457.63$1,810.8510,900
2023-12-06$1,462.68$1,817.127,700
2023-12-05$1,506.43$1,871.475,400
2023-12-04$1,522.90$1,891.9310,800
2023-12-01$1,526.36$1,896.235,500
2023-11-30$1,531.92$1,903.149,000
2023-11-29$1,526.00$1,895.786,800
2023-11-28$1,525.74$1,895.469,300
2023-11-27$1,551.29$1,927.208,300
2023-11-24$1,528.99$1,899.502,900
2023-11-22$1,524.87$1,894.386,200
2023-11-21$1,484.02$1,843.6311,300
2023-11-20$1,465.79$1,820.9813,400
2023-11-17$1,477.98$1,836.1311,300
2023-11-16$1,469.04$1,825.028,400
2023-11-15$1,466.05$1,821.3110,300
2023-11-14$1,514.30$1,881.2515,500
2023-11-13$1,500.07$1,863.575,900
2023-11-10$1,509.97$1,875.8711,900
2023-11-09$1,488.09$1,848.6911,500
2023-11-08$1,468.23$1,824.018,700
2023-11-07$1,455.10$1,807.708,700
2023-11-06$1,451.98$1,803.837,800
2023-11-03$1,461.10$1,815.166,900
2023-11-02$1,468.82$1,824.758,100
2023-11-01$1,456.49$1,809.438,800
2023-10-31$1,430.75$1,777.4513,900
2023-10-30$1,447.16$1,797.847,700
2023-10-27$1,425.40$1,770.816,700
2023-10-26$1,451.89$1,803.718,000
2023-10-25$1,443.01$1,792.689,700
2023-10-24$1,442.26$1,791.758,500
2023-10-23$1,432.47$1,779.597,200
2023-10-20$1,467.91$1,823.625,400
2023-10-19$1,492.97$1,854.757,700
2023-10-18$1,529.38$1,899.989,100
2023-10-17$1,542.93$1,916.8220,900
2023-10-16$1,520.77$1,889.2914,700
2023-10-13$1,481.90$1,841.007,600
2023-10-12$1,500.29$1,863.8412,700
2023-10-11$1,523.75$1,892.996,400
2023-10-10$1,516.45$1,883.926,900
2023-10-09$1,499.86$1,863.313,500
2023-10-06$1,524.81$1,894.3010,500
2023-10-05$1,529.06$1,899.5816,000
2023-10-04$1,524.35$1,893.7318,500
2023-10-03$1,454.51$1,806.9712,100
2023-10-02$1,509.45$1,875.2216,700
2023-09-29$1,495.69$1,858.1314,600
2023-09-28$1,520.54$1,889.0010,000
2023-09-27$1,538.00$1,910.6922,900
2023-09-26$1,524.14$1,893.4712,400
2023-09-25$1,537.91$1,910.588,500
2023-09-22$1,558.21$1,935.806,500
2023-09-21$1,506.93$1,872.095,900
2023-09-20$1,509.05$1,874.735,500
2023-09-19$1,509.13$1,874.827,800
2023-09-18$1,556.76$1,934.005,500
2023-09-15$1,574.02$1,955.4414,900
2023-09-14$1,567.07$1,946.807,300
2023-09-13$1,564.90$1,944.1112,600
2023-09-12$1,559.65$1,937.599,300
2023-09-11$1,521.75$1,890.504,900
2023-09-08$1,510.25$1,876.225,500
2023-09-07$1,517.58$1,885.328,000
2023-09-06$1,540.52$1,913.824,200
2023-09-05$1,572.10$1,953.055,600
2023-09-01$1,591.90$1,977.654,600
2023-08-31$1,588.69$1,973.668,900
2023-08-30$1,591.58$1,977.255,500
2023-08-29$1,564.80$1,943.987,100
2023-08-28$1,560.66$1,938.849,000
2023-08-25$1,558.58$1,936.265,600
2023-08-24$1,560.85$1,939.085,500
2023-08-23$1,540.00$1,913.187,700
2023-08-22$1,520.60$1,889.074,600
2023-08-21$1,554.58$1,931.295,500
2023-08-18$1,566.45$1,946.039,700
2023-08-17$1,565.24$1,944.5316,300
2023-08-16$1,545.80$1,920.387,200
2023-08-15$1,552.03$1,928.125,300
2023-08-14$1,550.01$1,925.618,800
2023-08-11$1,567.87$1,947.8011,200
2023-08-10$1,562.22$1,940.7825,900
2023-08-09$1,548.88$1,924.219,800
2023-08-08$1,559.20$1,937.038,300
2023-08-07$1,551.78$1,927.815,800
2023-08-04$1,566.40$1,945.976,100
2023-08-03$1,583.00$1,966.606,600
2023-08-02$1,563.20$1,942.004,400
2023-08-01$1,583.86$1,967.664,900
2023-07-31$1,547.02$1,921.904,800
2023-07-28$1,537.63$1,910.234,800
2023-07-27$1,576.00$1,957.904,300
2023-07-26$1,607.11$1,996.557,100
2023-07-25$1,600.01$1,987.737,000
2023-07-24$1,582.23$1,965.6413,100
2023-07-21$1,580.02$1,962.897,400
2023-07-20$1,568.66$1,948.785,900
2023-07-19$1,540.49$1,913.789,300
2023-07-18$1,511.70$1,878.027,200
2023-07-17$1,523.39$1,892.549,100
2023-07-14$1,501.07$1,864.819,500
2023-07-13$1,475.05$1,832.4910,700
2023-07-12$1,484.22$1,843.8815,400
2023-07-11$1,436.30$1,784.357,600
2023-07-10$1,430.42$1,777.049,800
2023-07-07$1,397.94$1,736.698,700
2023-07-06$1,380.13$1,714.5712,000
2023-07-05$1,384.04$1,719.429,600
2023-07-03$1,383.86$1,719.203,100
2023-06-30$1,388.91$1,725.4710,000
2023-06-29$1,380.00$1,714.406,300
2023-06-28$1,370.00$1,701.988,500
2023-06-27$1,361.97$1,692.009,200
2023-06-26$1,350.06$1,677.215,900
2023-06-23$1,352.31$1,680.0011,700
2023-06-22$1,375.45$1,708.755,700
2023-06-21$1,368.03$1,699.539,100
2023-06-20$1,361.50$1,691.4212,600
2023-06-16$1,375.06$1,708.279,700
2023-06-15$1,394.71$1,732.686,200
2023-06-14$1,383.72$1,719.025,100
2023-06-13$1,368.08$1,699.608,200
2023-06-12$1,410.09$1,751.797,300
2023-06-09$1,432.07$1,779.094,800
2023-06-08$1,441.81$1,791.1914,400
2023-06-07$1,421.69$1,766.2012,000
2023-06-06$1,461.54$1,815.707,500
2023-06-05$1,419.84$1,763.909,500
2023-06-02$1,428.70$1,774.909,100
2023-06-01$1,371.76$1,704.179,200
2023-05-31$1,354.19$1,682.3410,800
2023-05-30$1,336.90$1,660.8613,600
2023-05-26$1,319.05$1,638.6814,600
2023-05-25$1,340.00$1,664.7111,500
2023-05-24$1,367.50$1,698.878,100
2023-05-23$1,387.38$1,723.579,500
2023-05-22$1,380.00$1,714.4010,600
2023-05-19$1,375.83$1,709.224,500
2023-05-18$1,396.11$1,734.4210,500
2023-05-17$1,379.76$1,714.1117,100
2023-05-16$1,412.68$1,755.005,900
2023-05-15$1,412.68$1,755.003,700
2023-05-12$1,426.47$1,772.133,300
2023-05-11$1,421.44$1,765.8910,900
2023-05-10$1,458.69$1,812.168,600
2023-05-09$1,462.48$1,816.874,200
2023-05-08$1,453.73$1,806.004,300
2023-05-05$1,438.41$1,786.973,600
2023-05-04$1,419.21$1,763.1217,400
2023-05-03$1,449.26$1,800.457,800
2023-05-02$1,408.22$1,749.4619,100
2023-05-01$1,452.50$1,804.4710,400
2023-04-28$1,432.14$1,779.1821,000
2023-04-27$1,452.16$1,804.056,800
2023-04-26$1,475.00$1,832.424,900
2023-04-25$1,503.00$1,867.216,600
2023-04-24$1,503.89$1,868.3219,200
2023-04-21$1,525.00$1,894.5417,000
2023-04-20$1,525.00$1,894.5430,500
2023-04-19$1,470.28$1,826.569,400
2023-04-18$1,438.00$1,786.466,800
2023-04-17$1,414.98$1,757.867,000
2023-04-14$1,410.19$1,751.9113,000
2023-04-13$1,426.50$1,772.176,800
2023-04-12$1,410.73$1,752.5810,900
2023-04-11$1,380.16$1,714.605,900
2023-04-10$1,376.30$1,709.819,700
2023-04-06$1,364.00$1,694.5313,100
2023-04-05$1,363.71$1,694.175,900
2023-04-04$1,365.93$1,696.9212,600
2023-04-03$1,376.54$1,710.1112,700
2023-03-31$1,377.49$1,711.2912,300
2023-03-30$1,377.29$1,711.045,100
2023-03-29$1,374.28$1,707.306,600
2023-03-28$1,395.85$1,734.097,500
2023-03-27$1,368.32$1,699.898,500
2023-03-24$1,350.79$1,678.1213,700
2023-03-23$1,330.01$1,652.3012,400
2023-03-22$1,339.36$1,663.9212,900
2023-03-21$1,368.18$1,699.7214,300
2023-03-20$1,330.61$1,653.0518,600
2023-03-17$1,346.77$1,673.1226,800
2023-03-16$1,384.65$1,720.1819,400
2023-03-15$1,335.79$1,659.4813,400
2023-03-14$1,371.16$1,703.4211,400
2023-03-13$1,322.18$1,642.5711,700
2023-03-10$1,383.38$1,718.609,200
2023-03-09$1,364.87$1,694.3711,800
2023-03-08$1,396.99$1,734.2411,400
2023-03-07$1,393.16$1,729.4811,900
2023-03-06$1,418.00$1,760.327,700
2023-03-03$1,407.98$1,747.8813,800
2023-03-02$1,415.05$1,756.6611,700
2023-03-01$1,426.57$1,770.9611,100
2023-02-28$1,443.57$1,792.0613,000
2023-02-27$1,461.89$1,814.819,500
2023-02-24$1,464.83$1,818.4610,600
2023-02-23$1,469.28$1,823.986,900
2023-02-22$1,468.23$1,822.6815,800
2023-02-21$1,498.11$1,859.7710,800
2023-02-17$1,551.67$1,926.268,400
2023-02-16$1,540.01$1,911.7912,800
2023-02-15$1,516.83$1,883.0110,000
2023-02-14$1,519.50$1,886.3210,300
2023-02-13$1,524.67$1,892.7412,200
2023-02-10$1,501.51$1,863.998,900
2023-02-09$1,478.99$1,836.037,300
2023-02-08$1,489.37$1,848.928,400
2023-02-07$1,495.49$1,856.529,400
2023-02-06$1,462.78$1,815.9113,800
2023-02-03$1,440.00$1,787.6313,400
2023-02-02$1,443.19$1,791.5917,200
2023-02-01$1,494.00$1,854.6711,300
2023-01-31$1,527.96$1,896.8311,200
2023-01-30$1,488.26$1,847.5410,400
2023-01-27$1,499.00$1,860.885,600
2023-01-26$1,498.67$1,860.4714,300
2023-01-25$1,505.96$1,869.5217,200
2023-01-24$1,482.00$1,839.779,100
2023-01-23$1,499.89$1,861.988,700
2023-01-20$1,481.84$1,839.579,200
2023-01-19$1,429.58$1,774.7013,700
2023-01-18$1,429.93$1,775.139,100
2023-01-17$1,450.77$1,801.0010,000
2023-01-13$1,436.42$1,783.198,700
2023-01-12$1,425.95$1,770.1914,500
2023-01-11$1,439.27$1,786.737,000
2023-01-10$1,442.87$1,791.207,300
2023-01-09$1,407.10$1,746.795,500
2023-01-06$1,420.24$1,763.108,800
2023-01-05$1,408.04$1,747.968,700
2023-01-04$1,404.49$1,743.555,900
2023-01-03$1,396.80$1,734.006,100