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 — 1993

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1993-12-31$78.50$85.198,900
1993-12-30$78.50$85.1912,400
1993-12-29$77.38$83.9717,100
1993-12-28$75.63$82.0713,300
1993-12-27$76.25$82.7511,000
1993-12-23$73.50$79.774,900
1993-12-22$89.50$97.135,500
1993-12-21$89.88$97.5412,400
1993-12-20$89.50$97.139,700
1993-12-17$90.13$97.8112,400
1993-12-16$90.00$97.6728,600
1993-12-15$89.13$96.729,900
1993-12-14$88.00$95.5032,600
1993-12-13$86.00$93.33930,700
1993-12-10$87.63$95.108,900
1993-12-09$88.00$95.503,600
1993-12-08$87.75$95.235,100
1993-12-07$88.13$95.64134,700
1993-12-06$88.00$95.503,000
1993-12-03$87.75$95.2317,600
1993-12-02$87.00$94.425,000
1993-12-01$88.00$95.5016,100
1993-11-30$88.50$96.047,600
1993-11-29$89.50$97.137,800
1993-11-26$87.50$94.9628,800
1993-11-24$86.25$93.601,000
1993-11-23$85.50$92.7923,200
1993-11-22$84.38$91.5717,500
1993-11-19$86.50$93.8711,600
1993-11-18$86.50$93.879,500
1993-11-17$86.88$94.281,500
1993-11-16$86.75$94.1520,100
1993-11-15$87.88$95.3715,000
1993-11-12$87.50$94.9618,400
1993-11-11$86.75$94.1524,100
1993-11-10$86.63$94.019,500
1993-11-09$87.00$94.426,300
1993-11-08$87.00$94.426,000
1993-11-05$87.00$94.4222,700
1993-11-04$88.00$95.5026,500
1993-11-03$89.00$96.5917,500
1993-11-02$89.25$96.865,800
1993-11-01$89.75$97.4011,400
1993-10-29$90.88$98.624,400
1993-10-28$90.00$97.677,500
1993-10-27$90.38$98.083,300
1993-10-26$90.00$97.67110,300
1993-10-25$90.75$98.493,800
1993-10-22$90.00$97.6749,000
1993-10-21$91.75$99.574,300
1993-10-20$91.75$99.577,500
1993-10-19$91.75$99.572,500
1993-10-18$92.00$99.8462,000
1993-10-15$92.38$100.252,900
1993-10-14$92.25$100.116,500
1993-10-13$91.88$99.7112,600
1993-10-12$91.63$99.4461,200
1993-10-11$90.75$98.4942,200
1993-10-08$89.50$97.132,100
1993-10-07$89.88$97.543,600
1993-10-06$90.00$97.673,200
1993-10-05$89.13$96.72700
1993-10-04$89.63$97.273,000
1993-10-01$89.38$96.9916,000
1993-09-30$89.63$97.272,500
1993-09-29$89.75$97.40700
1993-09-28$89.63$97.27900
1993-09-27$89.88$97.543,200
1993-09-24$90.00$97.674,400
1993-09-23$89.75$97.405,800
1993-09-22$89.63$97.275,900
1993-09-21$89.25$96.868,500
1993-09-20$89.00$96.597,100
1993-09-17$90.00$97.67300
1993-09-16$90.25$97.94800
1993-09-15$90.00$97.67700
1993-09-14$89.88$97.541,900
1993-09-13$90.25$97.942,500
1993-09-10$90.00$97.672,300
1993-09-09$89.25$96.864,700
1993-09-08$88.50$96.049,900
1993-09-07$90.00$97.6732,600
1993-09-03$89.63$97.273,100
1993-09-02$89.50$97.132,800
1993-09-01$90.00$97.6780,400
1993-08-31$88.50$96.047,300
1993-08-30$89.00$96.595,400
1993-08-27$89.13$96.723,700
1993-08-26$89.38$96.991,400
1993-08-25$88.88$96.452,500
1993-08-24$89.63$97.271,300
1993-08-23$89.63$97.271,200
1993-08-20$89.25$96.861,300
1993-08-19$88.38$95.91600
1993-08-18$88.75$96.321,900
1993-08-17$89.00$96.59900
1993-08-16$88.63$96.182,300
1993-08-13$89.25$96.861,200
1993-08-12$89.00$96.594,800
1993-08-11$89.25$96.8617,400
1993-08-10$88.25$95.778,300
1993-08-09$87.50$94.9615,000
1993-08-06$87.75$95.233,700
1993-08-05$87.38$94.823,200
1993-08-04$87.63$95.107,300
1993-08-03$87.50$94.965,400
1993-08-02$87.00$94.426,700
1993-07-30$87.00$94.4217,000
1993-07-29$86.75$94.15900
1993-07-28$86.50$93.872,800
1993-07-27$86.00$93.3366,800
1993-07-26$85.88$93.2018,900
1993-07-23$85.25$92.5225,600
1993-07-22$85.25$92.524,600
1993-07-21$85.50$92.798,500
1993-07-20$85.50$92.794,600
1993-07-19$85.25$92.529,200
1993-07-16$85.00$92.255,700
1993-07-15$84.00$91.163,400
1993-07-14$83.00$90.083,900
1993-07-13$82.63$89.678,200
1993-07-12$82.50$89.536,500
1993-07-09$82.50$89.531,400
1993-07-08$82.25$89.262,200
1993-07-07$82.63$89.675,400
1993-07-06$82.25$89.262,200
1993-07-02$82.00$88.99700
1993-07-01$82.00$88.9918,900
1993-06-30$81.25$88.184,000
1993-06-29$81.50$88.453,000
1993-06-28$82.00$88.991,700
1993-06-25$82.00$88.9911,500
1993-06-24$82.00$88.991,400
1993-06-23$81.75$88.723,800
1993-06-22$82.25$89.267,200
1993-06-21$82.50$89.535,500
1993-06-18$83.00$90.081,600
1993-06-17$83.00$90.088,300
1993-06-16$83.38$90.481,800
1993-06-15$83.63$90.7519,200
1993-06-14$82.75$89.801,400
1993-06-11$82.75$89.804,900
1993-06-10$83.38$90.482,000
1993-06-09$83.00$90.0825,900
1993-06-08$83.75$90.8926,700
1993-06-07$84.50$91.703,300
1993-06-04$85.00$92.259,000
1993-06-03$85.00$92.251,500
1993-06-02$85.50$92.792,600
1993-06-01$85.50$92.799,600
1993-05-28$85.38$92.651,600
1993-05-27$85.50$92.794,600
1993-05-26$86.38$93.7411,400
1993-05-25$86.38$93.743,900
1993-05-24$86.50$93.8739,000
1993-05-21$85.25$92.528,300
1993-05-20$85.50$92.7925,100
1993-05-19$85.13$92.381,900
1993-05-18$85.00$92.253,600
1993-05-17$85.25$92.522,200
1993-05-14$85.13$92.38900
1993-05-13$84.88$92.111,700
1993-05-12$84.75$91.986,800
1993-05-11$84.25$91.435,400
1993-05-10$84.50$91.702,200
1993-05-07$84.50$91.7012,800
1993-05-06$83.75$90.896,400
1993-05-05$82.50$89.535,700
1993-05-04$80.88$87.778,200
1993-05-03$80.50$87.3619,000
1993-04-30$82.00$88.991,400
1993-04-29$81.25$88.189,300
1993-04-28$80.75$87.635,700
1993-04-27$81.00$87.91200
1993-04-26$80.75$87.633,000
1993-04-23$80.13$86.9614,900
1993-04-22$80.75$87.63800
1993-04-21$81.25$88.183,100
1993-04-20$81.75$88.726,300
1993-04-19$82.50$89.539,500
1993-04-16$83.00$90.0811,700
1993-04-15$83.00$90.081,600
1993-04-14$83.88$91.035,800
1993-04-13$83.25$90.356,200
1993-04-12$82.75$89.8011,100
1993-04-08$81.13$88.041,400
1993-04-07$80.75$87.636,900
1993-04-06$79.75$86.559,400
1993-04-05$80.13$86.963,500
1993-04-02$80.38$87.2312,100
1993-04-01$80.50$87.361,700
1993-03-31$80.50$87.3612,500
1993-03-30$80.38$87.2313,900
1993-03-29$80.00$86.826,800
1993-03-26$80.50$87.368,800
1993-03-25$79.50$86.282,700
1993-03-24$79.25$86.016,400
1993-03-23$78.50$85.193,700
1993-03-22$78.25$84.921,400
1993-03-19$77.75$84.388,000
1993-03-18$77.50$84.113,000
1993-03-17$77.00$83.563,700
1993-03-16$78.25$84.925,300
1993-03-15$78.00$84.654,600
1993-03-12$77.38$83.9711,400
1993-03-11$77.50$84.117,900
1993-03-10$77.00$83.569,700
1993-03-09$77.38$83.9760,200
1993-03-08$76.00$82.488,300
1993-03-05$74.13$80.4415,100
1993-03-04$73.88$80.1714,400
1993-03-03$74.25$80.5810,200
1993-03-02$74.13$80.445,100
1993-03-01$74.25$80.585,500
1993-02-26$74.25$80.588,100
1993-02-25$73.13$79.363,700
1993-02-24$73.25$79.4915,500
1993-02-23$72.88$79.094,900
1993-02-22$72.25$78.411,300
1993-02-19$73.00$79.223,600
1993-02-18$72.75$78.952,900
1993-02-17$73.38$79.633,700
1993-02-16$73.38$79.6314,700
1993-02-12$74.38$80.7234,000
1993-02-11$73.50$79.772,100
1993-02-10$73.25$79.4917,900
1993-02-09$72.25$78.4129,500
1993-02-08$73.00$79.2217,900
1993-02-05$73.63$79.9033,200
1993-02-04$74.25$80.5840,900
1993-02-03$73.50$79.7721,000
1993-02-02$73.25$79.497,900
1993-02-01$72.88$79.0914,300
1993-01-29$73.00$79.226,000
1993-01-28$73.38$79.639,300
1993-01-27$73.50$79.7711,400
1993-01-26$73.75$80.0413,900
1993-01-25$73.00$79.224,500
1993-01-22$72.88$79.091,500
1993-01-21$73.00$79.223,100
1993-01-20$73.25$79.494,000
1993-01-19$73.00$79.2225,700
1993-01-18$72.25$78.413,900
1993-01-15$72.88$79.097,300
1993-01-14$72.13$78.273,000
1993-01-13$72.00$78.141,900
1993-01-12$71.75$77.871,300
1993-01-11$71.88$78.001,700
1993-01-08$72.00$78.1412,800
1993-01-07$72.00$78.1443,100
1993-01-06$71.63$77.7310,600
1993-01-05$71.63$77.739,100
1993-01-04$72.00$78.1419,500