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 — 2016

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2016-12-30$836.05$1,031.2313,800
2016-12-29$837.10$1,032.526,900
2016-12-28$843.31$1,040.187,400
2016-12-27$841.00$1,037.3317,600
2016-12-23$854.95$1,054.545,800
2016-12-22$847.10$1,044.8513,800
2016-12-21$859.65$1,060.3314,500
2016-12-20$848.00$1,045.9616,100
2016-12-19$854.50$1,053.9837,000
2016-12-16$839.21$1,035.1233,100
2016-12-15$845.62$1,043.0319,000
2016-12-14$846.71$1,044.3710,700
2016-12-13$860.08$1,060.8622,200
2016-12-12$868.00$1,070.6325,000
2016-12-09$854.90$1,054.4820,800
2016-12-08$857.65$1,057.8711,400
2016-12-07$849.93$1,048.3513,600
2016-12-06$847.89$1,045.8321,000
2016-12-05$841.88$1,038.4210,800
2016-12-02$852.49$1,051.5038,400
2016-12-01$851.90$1,050.7836,100
2016-11-30$836.97$1,032.3621,100
2016-11-29$854.81$1,054.3617,800
2016-11-28$851.27$1,050.0019,800
2016-11-25$850.00$1,048.434,200
2016-11-23$836.16$1,031.3611,600
2016-11-22$828.06$1,021.377,100
2016-11-21$832.56$1,026.928,100
2016-11-18$837.21$1,032.6630,100
2016-11-17$838.64$1,034.4215,100
2016-11-16$834.14$1,028.879,400
2016-11-15$838.19$1,033.8618,500
2016-11-14$829.92$1,023.6612,000
2016-11-11$828.00$1,021.3015,100
2016-11-10$825.23$1,017.8825,000
2016-11-09$820.99$1,012.6517,300
2016-11-08$831.49$1,025.607,400
2016-11-07$823.37$1,015.5913,400
2016-11-04$818.40$1,009.4514,300
2016-11-03$824.00$1,016.368,000
2016-11-02$833.14$1,027.6411,400
2016-11-01$825.80$1,018.589,400
2016-10-31$829.72$1,023.427,200
2016-10-28$832.51$1,026.864,700
2016-10-27$834.85$1,029.757,200
2016-10-26$823.97$1,016.338,500
2016-10-25$827.00$1,020.0612,900
2016-10-24$826.85$1,019.8820,100
2016-10-21$826.05$1,018.8912,400
2016-10-20$829.63$1,023.315,300
2016-10-19$838.12$1,033.7817,900
2016-10-18$851.77$1,050.6116,400
2016-10-17$846.97$1,044.6912,200
2016-10-14$845.94$1,043.4221,800
2016-10-13$841.98$1,038.5416,500
2016-10-12$831.00$1,025.0018,200
2016-10-11$825.01$1,017.615,500
2016-10-10$826.51$1,019.4610,300
2016-10-07$825.02$1,017.629,000
2016-10-06$821.10$1,012.7913,500
2016-10-05$820.74$1,012.349,300
2016-10-04$828.81$1,022.306,100
2016-10-03$830.00$1,023.7614,000
2016-09-30$830.00$1,023.7616,200
2016-09-29$826.55$1,019.517,000
2016-09-28$831.53$1,025.656,600
2016-09-27$829.13$1,022.698,300
2016-09-26$825.34$1,018.017,900
2016-09-23$826.00$1,018.8313,700
2016-09-22$827.00$1,020.065,400
2016-09-21$828.10$1,021.4210,600
2016-09-20$827.99$1,021.285,600
2016-09-19$830.73$1,024.6620,400
2016-09-16$812.08$1,001.6633,900
2016-09-15$819.92$1,011.339,300
2016-09-14$816.00$1,006.4920,800
2016-09-13$816.28$1,006.8420,000
2016-09-12$814.93$1,005.1736,300
2016-09-09$822.20$1,014.149,200
2016-09-08$829.72$1,023.4212,100
2016-09-07$834.86$1,029.7614,400
2016-09-06$828.19$1,021.5322,000
2016-09-02$827.76$1,021.0013,500
2016-09-01$824.11$1,016.5015,500
2016-08-31$824.02$1,016.3915,300
2016-08-30$818.10$1,009.0817,300
2016-08-29$822.00$1,013.9030,100
2016-08-26$814.34$1,004.4522,200
2016-08-25$823.83$1,016.1511,500
2016-08-24$823.00$1,015.136,700
2016-08-23$823.10$1,015.256,800
2016-08-22$824.65$1,017.163,500
2016-08-19$824.65$1,017.163,300
2016-08-18$824.18$1,016.585,800
2016-08-17$818.40$1,009.458,300
2016-08-16$822.00$1,013.9014,600
2016-08-15$826.98$1,020.044,900
2016-08-12$825.24$1,017.895,000
2016-08-11$825.01$1,017.614,600
2016-08-10$820.61$1,012.1810,800
2016-08-09$822.70$1,014.769,600
2016-08-08$829.00$1,022.5312,200
2016-08-05$819.33$1,010.609,500
2016-08-04$825.14$1,017.7710,300
2016-08-03$820.35$1,011.868,600
2016-08-02$820.36$1,011.8710,600
2016-08-01$821.00$1,012.6611,600
2016-07-29$821.32$1,013.066,200
2016-07-28$822.20$1,014.1411,200
2016-07-27$825.32$1,017.997,000
2016-07-26$824.98$1,017.576,300
2016-07-25$821.45$1,013.2215,100
2016-07-22$827.25$1,020.3711,300
2016-07-21$815.91$1,006.3815,500
2016-07-20$813.23$1,003.0819,200
2016-07-19$812.92$1,002.7014,800
2016-07-18$816.66$1,007.3122,900
2016-07-15$816.29$1,006.8532,900
2016-07-14$823.76$1,016.0716,500
2016-07-13$825.48$1,018.1911,700
2016-07-12$829.50$1,023.1513,600
2016-07-11$833.91$1,028.599,600
2016-07-08$832.04$1,026.2811,800
2016-07-07$833.46$1,028.034,800
2016-07-06$829.77$1,023.4822,900
2016-07-05$828.94$1,022.468,300
2016-07-01$835.85$1,030.989,000
2016-06-30$842.00$1,038.5621,700
2016-06-29$836.93$1,032.3119,800
2016-06-28$825.09$1,017.7126,400
2016-06-27$799.45$986.0818,400
2016-06-24$814.27$1,004.3643,100
2016-06-23$834.16$1,028.8913,500
2016-06-22$830.47$1,024.3412,300
2016-06-21$825.10$1,017.7216,400
2016-06-20$827.68$1,020.9020,100
2016-06-17$829.12$1,022.6843,000
2016-06-16$823.37$1,015.5922,900
2016-06-15$821.92$1,013.8036,900
2016-06-14$809.14$998.0320,300
2016-06-13$809.73$998.7622,600
2016-06-10$808.00$996.6323,700
2016-06-09$813.78$1,003.7623,500
2016-06-08$815.37$1,005.7223,600
2016-06-07$819.04$1,010.2422,500
2016-06-06$807.45$995.9521,400
2016-06-03$815.95$1,006.4321,200
2016-06-02$824.41$1,016.8719,200
2016-06-01$814.85$1,005.0816,100
2016-05-31$805.38$993.4042,200
2016-05-27$799.66$986.3416,300
2016-05-26$806.00$994.1610,400
2016-05-25$808.49$997.2314,900
2016-05-24$811.02$1,000.3520,000
2016-05-23$796.99$983.0517,700
2016-05-20$803.62$991.2237,400
2016-05-19$825.76$1,018.5311,600
2016-05-18$829.20$1,022.7811,100
2016-05-17$826.94$1,019.9911,700
2016-05-16$828.24$1,021.5911,000
2016-05-13$825.00$1,017.6023,800
2016-05-12$825.61$1,018.3517,800
2016-05-11$820.94$1,012.5912,900
2016-05-10$820.00$1,011.4319,100
2016-05-09$819.91$1,011.3211,600
2016-05-06$813.77$1,003.7414,800
2016-05-05$820.50$1,012.0410,400
2016-05-04$818.92$1,010.1015,700
2016-05-03$829.00$1,022.5310,800
2016-05-02$834.00$1,028.7014,500
2016-04-29$830.00$1,023.7612,600
2016-04-28$823.92$1,016.2610,700
2016-04-27$817.95$1,008.904,900
2016-04-26$812.44$1,002.107,700
2016-04-25$803.99$991.689,200
2016-04-22$804.54$992.367,900
2016-04-21$812.76$1,002.5012,100
2016-04-20$820.01$1,011.447,600
2016-04-19$808.16$996.826,200
2016-04-18$807.00$995.399,700
2016-04-15$811.84$1,001.3628,200
2016-04-14$807.00$995.3912,400
2016-04-13$804.99$992.9114,500
2016-04-12$803.60$991.2017,800
2016-04-11$801.98$989.2016,000
2016-04-08$802.64$990.0215,400
2016-04-07$800.00$986.7618,700
2016-04-06$804.44$992.2421,000
2016-04-05$803.39$990.9412,900
2016-04-04$810.78$1,000.0619,400
2016-04-01$807.02$995.4216,900
2016-03-31$802.60$989.9712,100
2016-03-30$805.00$992.9313,000
2016-03-29$797.89$984.1610,000
2016-03-28$793.03$978.1614,200
2016-03-24$781.01$963.3413,200
2016-03-23$777.05$958.4510,000
2016-03-22$766.29$945.1822,400
2016-03-21$779.79$961.8321,100
2016-03-18$776.45$957.7131,000
2016-03-17$792.00$976.8919,700
2016-03-16$795.67$980.1819,300
2016-03-15$796.35$981.029,100
2016-03-14$791.98$975.6411,200
2016-03-11$796.05$980.6524,500
2016-03-10$780.60$961.6215,300
2016-03-09$774.00$953.4924,100
2016-03-08$767.00$944.8722,700
2016-03-07$769.70$948.1962,700
2016-03-04$768.06$946.1713,700
2016-03-03$773.34$952.6813,200
2016-03-02$764.98$942.3878,000
2016-03-01$774.85$954.5421,300
2016-02-29$766.86$944.6912,200
2016-02-26$772.00$951.0326,300
2016-02-25$763.93$941.0820,400
2016-02-24$760.05$936.3010,500
2016-02-23$748.16$921.6612,800
2016-02-22$746.96$920.1810,100
2016-02-19$736.59$907.4013,300
2016-02-18$735.00$905.4518,200
2016-02-17$733.78$903.9418,700
2016-02-16$720.31$887.3521,600
2016-02-12$721.76$889.1421,000
2016-02-11$728.79$897.809,600
2016-02-10$735.10$905.5721,200
2016-02-09$710.52$875.2981,300
2016-02-08$748.37$921.9229,000
2016-02-05$722.17$889.6414,800
2016-02-04$706.10$869.847,500
2016-02-03$709.18$873.647,400
2016-02-02$711.60$876.625,600
2016-02-01$710.05$874.719,100
2016-01-29$713.09$878.4528,700
2016-01-28$705.72$869.3813,900
2016-01-27$699.47$861.6813,800
2016-01-26$710.00$874.6517,700
2016-01-25$703.80$867.0121,800
2016-01-22$719.95$886.9122,900
2016-01-21$714.43$880.1119,500
2016-01-20$733.90$904.0911,600
2016-01-19$734.47$904.797,800
2016-01-15$733.90$904.0923,400
2016-01-14$729.87$899.1313,100
2016-01-13$723.89$891.7610,200
2016-01-12$728.92$897.9612,600
2016-01-11$728.20$897.0712,000
2016-01-08$717.20$883.5215,700
2016-01-07$726.53$895.0117,800
2016-01-06$734.70$905.0840,600
2016-01-05$741.98$914.0410,400
2016-01-04$720.12$887.1211,800