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 — 2013

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2013-12-31$603.08$740.5411,400
2013-12-30$601.97$739.174,900
2013-12-27$602.00$739.215,600
2013-12-26$599.55$736.203,100
2013-12-24$601.00$737.985,600
2013-12-23$598.88$735.387,000
2013-12-20$597.00$733.0726,400
2013-12-19$588.38$722.4912,000
2013-12-18$595.46$731.1826,000
2013-12-17$587.00$720.7910,600
2013-12-16$593.80$729.149,700
2013-12-13$600.99$737.9716,700
2013-12-12$593.99$729.3815,300
2013-12-11$588.06$722.0915,400
2013-12-10$594.21$729.657,600
2013-12-09$598.15$734.48110,000
2013-12-06$594.65$730.197,400
2013-12-05$582.01$714.664,600
2013-12-04$589.72$724.134,100
2013-12-03$594.30$729.766,600
2013-12-02$603.69$741.292,800
2013-11-29$602.83$740.231,200
2013-11-27$606.31$744.503,000
2013-11-26$604.40$742.165,700
2013-11-25$602.18$739.438,500
2013-11-22$601.84$739.017,000
2013-11-21$604.00$741.6717,200
2013-11-20$601.06$738.0618,400
2013-11-19$602.27$739.5413,800
2013-11-18$602.51$739.845,600
2013-11-15$600.87$737.824,200
2013-11-14$599.82$736.5318,600
2013-11-13$596.60$732.5820,500
2013-11-12$595.04$730.664,800
2013-11-11$594.01$729.4022,400
2013-11-08$595.15$730.8020,100
2013-11-07$592.02$726.968,800
2013-11-06$588.02$722.042,700
2013-11-05$590.02$724.506,900
2013-11-04$588.40$722.518,700
2013-11-01$588.82$723.037,000
2013-10-31$584.07$717.1915,700
2013-10-30$577.13$708.678,000
2013-10-29$581.10$713.558,600
2013-10-28$580.17$712.4111,700
2013-10-25$579.00$710.973,200
2013-10-24$577.57$709.214,600
2013-10-23$577.60$709.253,600
2013-10-22$577.04$708.566,300
2013-10-21$576.90$708.392,700
2013-10-18$577.80$709.506,100
2013-10-17$575.20$706.3017,500
2013-10-16$570.71$700.798,800
2013-10-15$573.98$704.807,600
2013-10-14$577.85$709.563,200
2013-10-11$576.84$708.328,200
2013-10-10$576.92$708.416,900
2013-10-09$568.03$697.501,300
2013-10-08$571.51$701.772,400
2013-10-07$575.00$706.065,400
2013-10-04$579.00$710.9710,800
2013-10-03$575.00$706.065,000
2013-10-02$576.15$707.474,200
2013-10-01$571.00$701.151,800
2013-09-30$567.62$697.002,600
2013-09-27$572.50$702.991,300
2013-09-26$574.76$705.762,900
2013-09-25$573.80$704.583,100
2013-09-24$571.10$701.271,400
2013-09-23$570.45$700.473,500
2013-09-20$567.03$696.2712,300
2013-09-19$576.32$707.683,800
2013-09-18$576.62$708.054,800
2013-09-17$574.25$705.1410,100
2013-09-16$575.98$707.264,400
2013-09-13$572.09$702.482,900
2013-09-12$572.55$703.052,300
2013-09-11$572.30$702.744,800
2013-09-10$573.65$704.403,900
2013-09-09$574.94$705.9814,400
2013-09-06$558.35$685.615,800
2013-09-05$566.00$695.016,000
2013-09-04$564.40$693.046,500
2013-09-03$555.82$682.513,300
2013-08-30$559.75$687.332,600
2013-08-29$560.75$688.562,600
2013-08-28$560.02$687.664,100
2013-08-27$561.50$689.482,400
2013-08-26$566.55$695.686,200
2013-08-23$569.95$699.862,400
2013-08-22$569.50$699.301,600
2013-08-21$560.00$687.641,800
2013-08-20$560.55$688.312,800
2013-08-19$558.75$686.103,700
2013-08-16$564.50$693.161,300
2013-08-15$566.26$695.332,200
2013-08-14$572.00$702.375,400
2013-08-13$572.61$703.122,800
2013-08-12$573.85$704.6514,100
2013-08-09$576.50$707.906,400
2013-08-08$582.73$715.553,300
2013-08-07$584.30$717.488,900
2013-08-06$589.36$723.697,500
2013-08-05$597.00$733.075,700
2013-08-02$595.92$731.757,200
2013-08-01$598.62$735.068,500
2013-07-31$598.00$734.307,100
2013-07-30$601.15$738.176,200
2013-07-29$599.01$735.542,800
2013-07-26$602.75$740.133,200
2013-07-25$603.05$740.5016,400
2013-07-24$603.06$740.516,100
2013-07-23$601.25$738.296,400
2013-07-22$604.55$742.342,500
2013-07-19$604.44$742.213,200
2013-07-18$604.02$741.698,000
2013-07-17$600.44$737.304,500
2013-07-16$598.00$734.306,800
2013-07-15$597.18$733.293,200
2013-07-12$599.00$735.536,300
2013-07-11$593.46$728.7210,100
2013-07-10$598.74$735.213,700
2013-07-09$599.97$736.7212,200
2013-07-08$594.20$729.637,300
2013-07-05$590.22$724.753,300
2013-07-03$587.00$720.793,700
2013-07-02$587.00$720.797,700
2013-07-01$588.00$722.0216,200
2013-06-28$574.94$705.9844,700
2013-06-27$577.88$709.5912,100
2013-06-26$577.42$709.039,000
2013-06-25$574.80$705.8111,900
2013-06-24$570.48$700.5119,100
2013-06-21$575.00$706.0634,800
2013-06-20$574.15$705.0113,100
2013-06-19$574.36$705.2719,900
2013-06-18$575.50$706.6746,500
2013-06-17$575.00$706.069,100
2013-06-14$568.65$698.266,700
2013-06-13$574.60$705.5710,400
2013-06-12$576.85$708.3320,200
2013-06-11$583.01$715.8924,000
2013-06-10$590.91$725.5917,400
2013-06-07$593.52$728.8012,700
2013-06-06$588.02$722.045,300
2013-06-05$585.03$718.373,900
2013-06-04$592.96$728.113,800
2013-06-03$598.69$735.154,300
2013-05-31$591.17$725.9120,700
2013-05-30$600.00$736.763,100
2013-05-29$605.50$743.516,800
2013-05-28$610.50$749.656,500
2013-05-24$602.03$739.255,900
2013-05-23$604.27$742.007,000
2013-05-22$601.75$738.909,700
2013-05-21$607.40$745.8413,000
2013-05-20$606.80$745.117,800
2013-05-17$606.80$745.114,500
2013-05-16$606.56$744.813,300
2013-05-15$608.25$746.8928,900
2013-05-14$588.69$722.879,100
2013-05-13$585.69$719.185,200
2013-05-10$594.48$729.987,800
2013-05-09$588.63$722.796,200
2013-05-08$592.68$727.7713,800
2013-05-07$581.65$714.228,600
2013-05-06$576.36$707.735,900
2013-05-03$569.85$699.7318,800
2013-05-02$565.03$693.819,700
2013-05-01$573.57$704.307,500
2013-04-30$578.31$710.128,200
2013-04-29$576.00$707.2915,600
2013-04-26$581.00$713.426,400
2013-04-25$580.00$712.206,900
2013-04-24$582.00$714.654,600
2013-04-23$577.90$709.623,400
2013-04-22$570.58$700.634,900
2013-04-19$568.00$697.466,700
2013-04-18$568.10$697.586,800
2013-04-17$571.00$701.159,800
2013-04-16$587.16$720.996,200
2013-04-15$579.45$711.5213,800
2013-04-12$580.97$713.392,600
2013-04-11$581.90$714.532,700
2013-04-10$579.02$710.994,600
2013-04-09$580.03$712.232,200
2013-04-08$579.00$710.977,800
2013-04-05$576.65$708.085,700
2013-04-04$576.32$707.683,700
2013-04-03$566.30$695.375,000
2013-04-02$571.01$701.161,800
2013-04-01$569.00$698.693,600
2013-03-28$567.12$696.385,700
2013-03-27$566.21$695.264,700
2013-03-26$567.55$696.912,500
2013-03-25$565.41$694.281,600
2013-03-22$570.15$700.104,500
2013-03-21$566.25$695.316,000
2013-03-20$562.14$690.277,500
2013-03-19$573.73$704.503,500
2013-03-18$571.83$702.166,400
2013-03-15$579.31$711.3528,300
2013-03-14$563.57$692.028,800
2013-03-13$554.90$680.156,500
2013-03-12$544.30$667.164,700
2013-03-11$549.41$673.4212,600
2013-03-08$560.04$686.4517,700
2013-03-07$551.71$676.2423,800
2013-03-06$572.50$701.722,000
2013-03-05$569.75$698.353,200
2013-03-04$565.00$692.536,100
2013-03-01$566.85$694.807,800
2013-02-28$565.00$692.5315,000
2013-02-27$562.60$689.5911,700
2013-02-26$551.00$675.379,300
2013-02-25$557.11$682.865,000
2013-02-22$567.34$695.404,700
2013-02-21$566.00$693.752,900
2013-02-20$563.01$690.099,000
2013-02-19$564.00$691.303,800
2013-02-15$564.51$691.934,000
2013-02-14$563.00$690.082,000
2013-02-13$567.10$695.102,900
2013-02-12$567.50$695.597,700
2013-02-11$564.08$691.404,100
2013-02-08$562.25$689.164,700
2013-02-07$556.55$682.173,900
2013-02-06$553.64$678.602,600
2013-02-05$556.00$681.509,400
2013-02-04$555.25$680.584,200
2013-02-01$562.25$689.167,100
2013-01-31$550.66$674.9515,300
2013-01-30$544.06$666.865,900
2013-01-29$552.43$677.123,500
2013-01-28$546.80$670.226,300
2013-01-25$544.53$667.442,300
2013-01-24$543.99$666.783,700
2013-01-23$545.79$668.985,000
2013-01-22$543.92$666.696,900
2013-01-18$532.99$653.2913,100
2013-01-17$528.74$648.088,700
2013-01-16$533.47$653.885,500
2013-01-15$541.56$663.8014,400
2013-01-14$544.16$666.982,600
2013-01-11$544.25$667.096,600
2013-01-10$542.00$664.346,800
2013-01-09$539.60$661.397,200
2013-01-08$535.49$656.368,000
2013-01-07$535.90$656.864,900
2013-01-04$534.98$655.737,900
2013-01-03$530.57$650.338,700
2013-01-02$523.50$641.663,400