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 — 2007

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2007-12-31$514.05$615.7716,600
2007-12-28$508.35$608.9439,400
2007-12-27$500.00$598.9441,600
2007-12-26$509.00$609.722,300
2007-12-24$512.60$614.036,400
2007-12-21$513.00$614.516,700
2007-12-20$511.75$613.014,700
2007-12-19$511.47$612.689,000
2007-12-18$510.00$610.926,800
2007-12-17$510.00$610.929,200
2007-12-14$518.44$621.0310,100
2007-12-13$523.47$627.0515,800
2007-12-12$519.99$620.4911,300
2007-12-11$517.50$617.5219,100
2007-12-10$519.50$619.9018,400
2007-12-07$511.97$610.9227,200
2007-12-06$514.70$614.1810,800
2007-12-05$522.00$622.8926,100
2007-12-04$510.00$608.5720,300
2007-12-03$527.70$629.6917,300
2007-11-30$515.00$614.5334,500
2007-11-29$500.17$596.8418,400
2007-11-28$504.50$602.0025,000
2007-11-27$500.50$597.2322,400
2007-11-26$504.00$601.4125,400
2007-11-23$509.00$607.372,100
2007-11-21$500.68$597.4511,400
2007-11-20$505.50$603.2012,200
2007-11-19$506.00$603.7918,600
2007-11-16$513.00$612.1524,000
2007-11-15$505.06$602.6719,500
2007-11-14$513.00$612.1527,400
2007-11-13$518.00$618.1111,800
2007-11-12$508.64$606.9417,700
2007-11-09$506.76$604.7026,900
2007-11-08$501.00$597.8347,700
2007-11-07$500.01$596.6526,900
2007-11-06$512.00$610.9521,400
2007-11-05$515.30$614.8947,900
2007-11-02$529.43$631.7521,600
2007-11-01$530.00$632.4310,100
2007-10-31$537.61$641.5119,100
2007-10-30$530.75$633.3327,900
2007-10-29$523.94$625.2034,600
2007-10-26$515.14$614.70324,300
2007-10-25$510.01$608.5828,500
2007-10-24$520.50$621.1019,200
2007-10-23$518.90$619.19103,500
2007-10-22$524.13$625.4351,300
2007-10-19$528.10$630.1738,800
2007-10-18$538.50$642.5848,700
2007-10-17$548.90$654.9951,300
2007-10-16$554.50$661.6710,700
2007-10-15$559.00$667.0411,000
2007-10-12$557.25$664.9524,000
2007-10-11$555.50$662.8612,500
2007-10-10$558.76$666.7517,200
2007-10-09$560.65$669.0114,100
2007-10-08$556.00$663.467,500
2007-10-05$566.50$675.9915,800
2007-10-04$550.90$657.3734,300
2007-10-03$552.01$658.7035,700
2007-10-02$541.07$645.6435,900
2007-10-01$518.00$618.1151,500
2007-09-28$519.75$620.2055,300
2007-09-27$522.90$623.9639,400
2007-09-26$525.80$627.4235,300
2007-09-25$527.00$628.855,900
2007-09-24$527.90$629.939,600
2007-09-21$526.50$628.2617,900
2007-09-20$525.00$626.4716,500
2007-09-19$529.70$632.0812,300
2007-09-18$528.14$630.2114,100
2007-09-17$524.05$625.3311,500
2007-09-14$532.95$635.9510,500
2007-09-13$528.98$631.2219,900
2007-09-12$528.75$628.5613,400
2007-09-11$533.00$633.6119,000
2007-09-10$533.90$634.6813,700
2007-09-07$526.08$625.3819,500
2007-09-06$530.28$630.3735,600
2007-09-05$530.63$630.7917,600
2007-09-04$537.04$638.4120,800
2007-08-31$522.00$620.5319,300
2007-08-30$518.58$616.4719,400
2007-08-29$520.00$618.1512,900
2007-08-28$515.25$612.5118,900
2007-08-27$511.25$607.7526,300
2007-08-24$535.00$635.9824,300
2007-08-23$516.25$613.7030,500
2007-08-22$519.15$617.1429,700
2007-08-21$535.40$636.4622,300
2007-08-20$533.00$633.6114,900
2007-08-17$537.00$638.3618,400
2007-08-16$536.00$637.1733,000
2007-08-15$536.00$637.1716,700
2007-08-14$539.00$640.7429,100
2007-08-13$544.28$647.0229,400
2007-08-10$540.50$642.5257,100
2007-08-09$592.74$704.6241,400
2007-08-08$582.00$691.8631,400
2007-08-07$554.00$658.5719,500
2007-08-06$540.25$642.2312,100
2007-08-03$535.50$636.5829,900
2007-08-02$540.00$641.9316,400
2007-08-01$539.10$640.8621,800
2007-07-31$549.50$653.2214,800
2007-07-30$548.17$651.649,100
2007-07-27$554.46$659.128,300
2007-07-26$563.70$670.1011,700
2007-07-25$572.30$680.3315,700
2007-07-24$578.15$687.2816,600
2007-07-23$583.36$693.4712,000
2007-07-20$575.50$684.1327,200
2007-07-19$574.50$682.9412,400
2007-07-18$569.11$676.5311,300
2007-07-17$575.20$683.7710,400
2007-07-16$584.90$695.3019,100
2007-07-13$586.06$696.6810,000
2007-07-12$592.40$704.2219,900
2007-07-11$594.50$706.7215,300
2007-07-10$598.80$711.8311,200
2007-07-09$606.00$720.399,400
2007-07-06$600.94$714.376,400
2007-07-05$596.77$709.4112,300
2007-07-03$602.21$715.884,900
2007-07-02$606.40$720.8618,500
2007-06-29$606.02$720.4112,400
2007-06-28$600.00$713.2516,600
2007-06-27$600.00$713.2521,700
2007-06-26$592.05$703.8016,100
2007-06-25$599.50$712.6624,100
2007-06-22$600.00$713.25325,400
2007-06-21$599.98$713.2334,800
2007-06-20$599.00$712.0732,500
2007-06-19$603.00$716.8221,800
2007-06-18$596.00$708.5017,700
2007-06-15$599.96$713.2112,600
2007-06-14$599.90$713.1410,100
2007-06-13$605.00$716.8218,000
2007-06-12$604.49$716.2237,600
2007-06-11$588.50$697.2711,500
2007-06-08$585.90$694.1918,400
2007-06-07$586.91$695.3914,100
2007-06-06$589.12$698.0112,100
2007-06-05$594.89$704.8415,100
2007-06-04$597.90$708.4112,100
2007-06-01$600.00$710.9018,400
2007-05-31$600.75$711.7837,600
2007-05-30$580.90$688.2714,300
2007-05-29$572.01$677.736,400
2007-05-25$571.00$676.5410,600
2007-05-24$567.88$672.845,600
2007-05-23$559.19$662.546,400
2007-05-22$559.70$663.1510,700
2007-05-21$565.38$669.8811,700
2007-05-18$562.90$666.9411,600
2007-05-17$565.00$669.438,300
2007-05-16$551.00$652.8415,100
2007-05-15$555.50$658.1710,300
2007-05-14$558.36$661.569,600
2007-05-11$560.52$664.1212,000
2007-05-10$560.90$664.5710,600
2007-05-09$573.50$679.508,400
2007-05-08$571.99$677.7110,400
2007-05-07$560.60$664.2119,100
2007-05-04$560.07$663.597,200
2007-05-03$562.00$665.8710,700
2007-05-02$564.57$668.9210,200
2007-05-01$573.00$678.918,100
2007-04-30$573.00$678.9114,800
2007-04-27$572.00$677.7211,600
2007-04-26$573.00$678.9112,500
2007-04-25$567.00$671.807,700
2007-04-24$572.50$678.317,500
2007-04-23$575.35$681.695,800
2007-04-20$577.00$683.6511,300
2007-04-19$574.23$680.364,400
2007-04-18$568.50$673.576,200
2007-04-17$573.04$678.959,700
2007-04-16$568.20$673.225,100
2007-04-13$575.00$681.283,500
2007-04-12$564.00$668.245,900
2007-04-11$569.10$674.293,000
2007-04-10$563.95$668.187,200
2007-04-09$560.50$664.1013,000
2007-04-05$570.01$675.362,300
2007-04-04$572.99$678.897,300
2007-04-03$570.00$675.357,100
2007-04-02$566.25$670.915,200
2007-03-30$566.50$671.208,000
2007-03-29$562.00$665.873,000
2007-03-28$560.00$663.506,600
2007-03-27$560.00$663.5026,600
2007-03-26$557.50$660.547,200
2007-03-23$551.37$653.2810,200
2007-03-22$559.39$662.7813,300
2007-03-21$551.00$652.846,700
2007-03-20$552.50$654.629,100
2007-03-19$549.00$650.472,900
2007-03-16$543.50$643.9518,300
2007-03-15$550.00$651.658,700
2007-03-14$544.90$643.2418,200
2007-03-13$557.99$658.695,300
2007-03-12$563.90$665.675,200
2007-03-09$563.99$665.786,200
2007-03-08$562.00$663.437,100
2007-03-07$561.95$663.3710,700
2007-03-06$565.25$667.278,200
2007-03-05$566.00$668.158,400
2007-03-02$572.11$675.369,900
2007-03-01$566.86$669.176,300
2007-02-28$574.86$678.618,400
2007-02-27$571.00$674.059,200
2007-02-26$580.00$684.684,800
2007-02-23$574.90$678.669,600
2007-02-22$568.80$671.4620,400
2007-02-21$571.56$674.7123,000
2007-02-20$576.25$680.256,100
2007-02-16$580.00$684.686,900
2007-02-15$575.00$678.7712,700
2007-02-14$578.30$682.6712,200
2007-02-13$568.70$671.3411,900
2007-02-12$568.05$670.5710,400
2007-02-09$576.00$679.9611,500
2007-02-08$579.00$683.5010,200
2007-02-07$573.50$677.0015,600
2007-02-06$574.00$677.5923,300
2007-02-05$579.97$684.648,300
2007-02-02$579.00$683.5014,700
2007-02-01$576.60$680.668,300
2007-01-31$579.70$684.3214,400
2007-01-30$576.84$680.9514,600
2007-01-29$569.00$671.6933,000
2007-01-26$570.24$673.1613,500
2007-01-25$566.30$668.5013,800
2007-01-24$569.40$672.1625,400
2007-01-23$577.90$682.2013,900
2007-01-22$578.00$682.326,200
2007-01-19$578.25$682.615,800
2007-01-18$576.00$679.965,300
2007-01-17$580.00$684.6818,700
2007-01-16$579.40$683.9722,600
2007-01-12$570.00$672.877,000
2007-01-11$566.26$668.467,000
2007-01-10$567.82$670.3011,400
2007-01-09$568.55$671.166,300
2007-01-08$568.00$670.516,000
2007-01-05$576.00$679.965,800
2007-01-04$579.30$683.856,600
2007-01-03$580.00$684.6816,400