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 — 1992

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1992-12-31$72.00$78.145,200
1992-12-30$71.00$77.058,600
1992-12-29$71.50$77.603,600
1992-12-28$71.75$77.872,500
1992-12-24$72.00$78.144,600
1992-12-23$72.00$78.14900
1992-12-22$71.88$78.001,600
1992-12-21$72.00$78.145,800
1992-12-18$72.38$78.553,600
1992-12-17$71.38$77.4644,300
1992-12-16$71.50$77.60100
1992-12-15$71.50$77.604,800
1992-12-14$71.75$77.8710,100
1992-12-11$72.00$78.141,200
1992-12-10$72.50$78.6810,900
1992-12-09$72.00$78.148,100
1992-12-08$73.00$79.223,100
1992-12-07$72.75$78.958,300
1992-12-04$73.25$79.499,300
1992-12-03$72.25$78.4125,200
1992-12-02$72.50$78.683,700
1992-12-01$73.75$80.0437,800
1992-11-30$73.50$79.773,400
1992-11-27$74.00$80.317,000
1992-11-25$73.63$79.9011,600
1992-11-24$73.25$79.499,900
1992-11-23$73.50$79.775,100
1992-11-20$73.38$79.634,500
1992-11-19$72.63$78.824,700
1992-11-18$72.75$78.9515,400
1992-11-17$71.50$77.6017,000
1992-11-16$71.50$77.60200
1992-11-13$71.13$77.193,900
1992-11-12$71.50$77.601,000
1992-11-11$71.63$77.735,800
1992-11-10$71.75$77.87900
1992-11-09$72.00$78.14700
1992-11-06$72.00$78.1413,800
1992-11-05$72.50$78.6818,000
1992-11-04$72.50$78.686,500
1992-11-03$73.00$79.2210,200
1992-11-02$73.13$79.3616,900
1992-10-30$72.75$78.9517,600
1992-10-29$72.00$78.141,200
1992-10-28$71.75$77.87400
1992-10-27$71.50$77.602,300
1992-10-26$72.00$78.143,300
1992-10-23$71.75$77.872,100
1992-10-22$71.25$77.323,800
1992-10-21$71.25$77.323,600
1992-10-20$71.25$77.3212,400
1992-10-19$71.00$77.058,000
1992-10-16$70.50$76.512,900
1992-10-15$70.50$76.5181,100
1992-10-14$70.75$76.789,700
1992-10-13$70.50$76.5110,200
1992-10-12$70.13$76.104,300
1992-10-09$70.25$76.246,800
1992-10-08$70.25$76.2417,700
1992-10-07$70.00$75.978,700
1992-10-06$70.00$75.9710,500
1992-10-05$70.00$75.9729,600
1992-10-02$70.38$76.3710,500
1992-10-01$70.38$76.3724,900
1992-09-30$70.25$76.242,800
1992-09-29$70.00$75.9739,500
1992-09-28$70.50$76.514,300
1992-09-25$70.25$76.2412,600
1992-09-24$70.75$76.7810,400
1992-09-23$70.50$76.518,900
1992-09-22$70.25$76.245,300
1992-09-21$70.00$75.972,300
1992-09-18$70.38$76.379,600
1992-09-17$69.75$75.7040,500
1992-09-16$70.38$76.371,300
1992-09-15$70.50$76.5114,600
1992-09-14$71.00$77.0517,400
1992-09-11$70.00$75.9726,300
1992-09-10$69.63$75.561,800
1992-09-09$69.25$75.153,600
1992-09-08$69.13$75.027,200
1992-09-04$69.25$75.152,200
1992-09-03$69.00$74.8861,300
1992-09-02$69.00$74.8818,300
1992-09-01$69.38$75.2922,200
1992-08-31$68.38$74.2038,800
1992-08-28$68.00$73.8018,600
1992-08-27$68.13$73.9325,400
1992-08-26$68.25$74.071,200
1992-08-25$68.13$73.9311,300
1992-08-24$68.38$74.2019,400
1992-08-21$68.75$74.6118,500
1992-08-20$68.88$74.7545,700
1992-08-19$68.63$74.482,400
1992-08-18$68.50$74.342,900
1992-08-17$68.75$74.611,100
1992-08-14$68.50$74.34200
1992-08-13$68.38$74.205,000
1992-08-12$68.25$74.073,500
1992-08-11$68.88$74.759,700
1992-08-10$68.38$74.202,600
1992-08-07$68.50$74.3421,000
1992-08-06$68.13$73.9312,900
1992-08-05$68.25$74.079,400
1992-08-04$68.50$74.3412,100
1992-08-03$68.38$74.2011,900
1992-07-31$68.50$74.3448,700
1992-07-30$68.38$74.205,100
1992-07-29$68.75$74.612,700
1992-07-28$68.88$74.7513,100
1992-07-27$67.75$73.5312,100
1992-07-24$67.88$73.666,500
1992-07-23$68.00$73.8065,800
1992-07-22$67.75$73.5318,000
1992-07-21$68.00$73.8010,600
1992-07-20$67.88$73.6628,200
1992-07-17$68.38$74.2019,800
1992-07-16$68.75$74.6114,000
1992-07-15$69.25$75.1537,200
1992-07-14$69.25$75.1514,400
1992-07-13$69.50$75.435,300
1992-07-10$68.88$74.754,600
1992-07-09$68.63$74.4816,900
1992-07-08$68.50$74.3436,100
1992-07-07$68.63$74.4867,600
1992-07-06$69.50$75.4311,600
1992-07-02$69.25$75.1514,000
1992-07-01$69.25$75.156,500
1992-06-30$69.25$75.154,200
1992-06-29$69.25$75.155,300
1992-06-26$69.25$75.153,700
1992-06-25$69.25$75.153,200
1992-06-24$69.25$75.1510,700
1992-06-23$69.13$75.028,800
1992-06-22$69.13$75.0251,000
1992-06-19$69.50$75.438,400
1992-06-18$69.38$75.2911,600
1992-06-17$69.63$75.5663,100
1992-06-16$69.75$75.7030,300
1992-06-15$69.38$75.2911,900
1992-06-12$69.38$75.2913,000
1992-06-11$69.25$75.1518,200
1992-06-10$69.25$75.15350,200
1992-06-09$69.25$75.15126,000
1992-06-08$69.38$75.2930,400
1992-06-05$69.25$75.1539,700
1992-06-04$69.00$74.882,500
1992-06-03$69.00$74.88420,400
1992-06-02$69.13$75.0223,300
1992-06-01$69.00$74.88166,500
1992-05-29$69.25$75.1530,000
1992-05-28$69.00$74.8840,900
1992-05-27$68.88$74.7514,900
1992-05-26$68.88$74.7582,900
1992-05-22$69.00$74.88236,300
1992-05-21$69.00$74.88142,800
1992-05-20$69.38$75.2925,000
1992-05-19$68.88$74.759,800
1992-05-18$69.00$74.887,100
1992-05-15$68.75$74.6139,100
1992-05-14$68.50$74.34113,500
1992-05-13$68.38$74.20171,500
1992-05-12$65.13$70.6832,600
1992-05-11$65.00$70.5430,700
1992-05-08$64.50$70.0046,200
1992-05-07$65.00$70.5435,200
1992-05-06$65.25$70.8156,000
1992-05-05$65.25$70.8112,600
1992-05-04$64.50$70.0083,300
1992-05-01$64.00$69.4644,600
1992-04-30$64.25$69.7357,600
1992-04-29$63.50$68.9181,100
1992-04-28$63.38$68.7840,100
1992-04-27$63.00$68.37120,800
1992-04-24$63.25$68.6475,800
1992-04-23$63.13$68.51207,800
1992-04-22$63.38$68.7868,900
1992-04-21$63.50$68.9145,900
1992-04-20$63.88$69.3233,200
1992-04-16$64.63$70.13129,300
1992-04-15$64.75$70.2785,200
1992-04-14$64.38$69.8650,100
1992-04-13$64.25$69.73152,200
1992-04-10$65.00$70.54309,000
1992-04-09$66.50$72.1733,300
1992-04-08$65.75$71.3670,000
1992-04-07$66.63$72.3143,100
1992-04-06$66.63$72.3116,900
1992-04-03$66.25$71.9031,900
1992-04-02$66.00$71.6352,200
1992-04-01$66.00$71.6312,900
1992-03-31$66.75$72.4421,500
1992-03-30$65.75$71.365,100
1992-03-27$65.75$71.368,300
1992-03-26$66.13$71.764,300
1992-03-25$66.00$71.6330,100
1992-03-24$66.50$72.1749,400
1992-03-23$66.50$72.177,300
1992-03-20$66.63$72.314,300
1992-03-19$66.25$71.9079,800
1992-03-18$66.25$71.90125,200
1992-03-17$66.75$72.4416,300
1992-03-16$66.00$71.6345,100
1992-03-13$65.88$71.4918,800
1992-03-12$66.25$71.9032,400
1992-03-11$66.00$71.634,200
1992-03-10$66.13$71.761,900
1992-03-09$66.00$71.6321,000
1992-03-06$65.75$71.3619,800
1992-03-05$65.75$71.3648,400
1992-03-04$66.13$71.768,200
1992-03-03$66.88$72.5815,900
1992-03-02$66.13$71.7619,300
1992-02-28$66.25$71.9038,900
1992-02-27$66.13$71.7612,300
1992-02-26$66.50$72.1718,400
1992-02-25$66.25$71.9021,600
1992-02-24$66.13$71.7613,500
1992-02-21$67.00$72.7130,700
1992-02-20$68.00$73.8051,400
1992-02-19$68.25$74.074,000
1992-02-18$68.88$74.753,300
1992-02-14$69.00$74.8814,800
1992-02-13$68.13$73.9312,700
1992-02-12$68.25$74.0719,600
1992-02-11$67.75$73.5331,400
1992-02-10$67.50$73.2521,500
1992-02-07$67.25$72.9838,600
1992-02-06$68.00$73.8020,800
1992-02-05$69.00$74.88382,600
1992-02-04$69.00$74.88232,200
1992-02-03$68.63$74.485,400
1992-01-31$68.75$74.6199,800
1992-01-30$68.75$74.615,500
1992-01-29$68.25$74.0745,000
1992-01-28$68.00$73.808,100
1992-01-27$67.25$72.9826,800
1992-01-24$66.75$72.442,700
1992-01-23$66.50$72.1710,400
1992-01-22$66.75$72.4427,300
1992-01-21$67.25$72.989,300
1992-01-20$66.88$72.5810,900
1992-01-17$66.88$72.586,900
1992-01-16$66.88$72.5840,500
1992-01-15$67.50$73.2533,600
1992-01-14$68.88$74.7511,900
1992-01-13$68.88$74.7560,800
1992-01-10$69.00$74.8829,500
1992-01-09$69.38$75.2952,100
1992-01-08$69.13$75.0227,200
1992-01-07$68.25$74.0716,800
1992-01-06$68.50$74.3454,600
1992-01-03$69.50$75.43156,900
1992-01-02$69.63$75.5644,300