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 — 1998

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1998-12-31$140.06$155.643,600
1998-12-30$139.00$154.465,300
1998-12-29$138.00$153.355,100
1998-12-28$137.75$153.071,800
1998-12-24$137.25$152.522,400
1998-12-23$137.25$152.523,300
1998-12-22$136.75$151.963,400
1998-12-21$135.75$150.852,200
1998-12-18$135.38$150.434,500
1998-12-17$135.63$150.713,800
1998-12-16$136.00$151.132,300
1998-12-15$137.00$152.241,800
1998-12-14$137.00$152.242,400
1998-12-11$138.38$153.772,700
1998-12-10$138.25$153.631,400
1998-12-09$139.06$154.092,900
1998-12-08$139.44$154.5019,200
1998-12-07$141.13$156.373,000
1998-12-04$142.31$157.694,000
1998-12-03$143.75$159.285,900
1998-12-02$144.00$159.564,900
1998-12-01$143.38$158.868,100
1998-11-30$141.75$157.064,100
1998-11-27$140.06$155.191,600
1998-11-25$140.00$155.134,700
1998-11-24$139.88$154.991,200
1998-11-23$139.75$154.852,500
1998-11-20$138.88$153.884,000
1998-11-19$138.50$153.46900
1998-11-18$137.00$151.80900
1998-11-17$136.00$150.693,300
1998-11-16$136.75$151.523,900
1998-11-13$139.00$154.02900
1998-11-12$139.00$154.026,200
1998-11-11$135.00$149.586,800
1998-11-10$134.00$148.481,600
1998-11-09$133.75$148.208,400
1998-11-06$132.00$146.264,100
1998-11-05$131.75$145.983,000
1998-11-04$130.00$144.041,700
1998-11-03$129.56$143.561,400
1998-11-02$129.00$142.946,100
1998-10-30$126.75$140.4411,800
1998-10-29$124.50$137.956,000
1998-10-28$124.25$137.678,900
1998-10-27$125.25$138.782,100
1998-10-26$126.25$139.891,600
1998-10-23$125.69$139.271,500
1998-10-22$125.06$138.578,900
1998-10-21$125.63$139.208,100
1998-10-20$126.06$139.689,000
1998-10-19$125.50$139.063,100
1998-10-16$124.63$138.095,800
1998-10-15$122.00$135.182,500
1998-10-14$119.25$132.135,000
1998-10-13$117.00$129.6411,700
1998-10-12$122.75$136.01300
1998-10-09$123.25$136.577,000
1998-10-08$119.44$132.3410,300
1998-10-07$123.75$137.128,300
1998-10-06$123.31$136.636,900
1998-10-05$123.75$137.123,200
1998-10-02$125.00$138.503,300
1998-10-01$124.25$137.676,300
1998-09-30$124.88$138.37500
1998-09-29$124.94$138.442,300
1998-09-28$125.00$138.503,200
1998-09-25$123.75$137.123,000
1998-09-24$123.75$137.12700
1998-09-23$123.88$137.264,700
1998-09-22$122.25$135.465,300
1998-09-21$120.75$133.805,500
1998-09-18$120.44$133.456,000
1998-09-17$120.00$132.963,200
1998-09-16$121.25$134.351,700
1998-09-15$121.25$134.356,400
1998-09-14$121.88$135.046,000
1998-09-11$119.50$132.413,700
1998-09-10$119.13$131.993,400
1998-09-09$121.50$134.182,000
1998-09-08$121.50$134.184,000
1998-09-04$119.13$131.566,400
1998-09-03$122.00$134.7410,100
1998-09-02$127.50$140.8110,700
1998-09-01$128.75$142.193,400
1998-08-31$128.00$141.369,800
1998-08-28$132.00$145.7816,300
1998-08-27$136.75$151.036,100
1998-08-26$138.75$153.232,900
1998-08-25$141.50$156.274,900
1998-08-24$142.00$156.824,800
1998-08-21$143.00$157.936,700
1998-08-20$143.25$158.205,100
1998-08-19$143.00$157.935,500
1998-08-18$145.75$160.967,000
1998-08-17$145.13$160.278,000
1998-08-14$147.25$162.626,100
1998-08-13$147.00$162.351,400
1998-08-12$147.75$163.176,500
1998-08-11$149.75$165.384,900
1998-08-10$150.88$166.622,600
1998-08-07$150.94$166.696,900
1998-08-06$152.38$168.285,600
1998-08-05$151.50$167.316,800
1998-08-04$151.00$166.763,700
1998-08-03$151.00$166.764,800
1998-07-31$151.00$166.765,700
1998-07-30$149.56$165.185,400
1998-07-29$148.75$164.283,400
1998-07-28$148.25$163.732,900
1998-07-27$149.50$165.113,400
1998-07-24$150.00$165.661,100
1998-07-23$150.25$165.931,400
1998-07-22$151.00$166.764,900
1998-07-21$152.00$167.873,300
1998-07-20$153.00$168.973,500
1998-07-17$153.13$169.112,200
1998-07-16$152.75$168.704,100
1998-07-15$151.94$167.804,000
1998-07-14$152.50$168.427,200
1998-07-13$150.50$166.214,300
1998-07-10$149.00$164.55600
1998-07-09$149.06$164.621,800
1998-07-08$148.00$163.457,500
1998-07-07$148.00$163.452,600
1998-07-06$146.75$162.075,400
1998-07-02$145.00$160.1415,300
1998-07-01$145.75$160.967,100
1998-06-30$148.00$163.459,700
1998-06-29$148.50$164.001,300
1998-06-26$148.25$163.731,200
1998-06-25$148.31$163.793,300
1998-06-24$146.44$161.72800
1998-06-23$146.13$161.38800
1998-06-22$146.25$161.52500
1998-06-19$146.50$161.795,900
1998-06-18$146.25$161.5213,400
1998-06-17$149.00$164.556,200
1998-06-16$147.50$162.902,300
1998-06-15$148.00$163.453,700
1998-06-12$148.63$164.141,300
1998-06-11$148.00$163.452,000
1998-06-10$148.69$164.212,500
1998-06-09$149.13$164.69300
1998-06-08$149.00$164.557,000
1998-06-05$149.00$164.551,200
1998-06-04$148.13$163.591,400
1998-06-03$148.75$163.84700
1998-06-02$148.75$163.845,400
1998-06-01$147.13$162.051,400
1998-05-29$146.56$161.432,200
1998-05-28$144.50$159.16400
1998-05-27$144.00$158.6010,300
1998-05-26$144.13$158.7411,100
1998-05-22$147.50$162.464,500
1998-05-21$149.00$164.111,100
1998-05-20$148.00$163.011,600
1998-05-19$148.00$163.011,600
1998-05-18$146.50$161.36800
1998-05-15$146.75$161.631,600
1998-05-14$146.88$161.772,300
1998-05-13$146.00$160.811,800
1998-05-12$144.75$159.432,800
1998-05-11$144.00$158.602,100
1998-05-08$142.00$156.40900
1998-05-07$141.38$155.714,800
1998-05-06$140.06$154.271,400
1998-05-05$140.50$154.752,400
1998-05-04$141.63$155.991,700
1998-05-01$141.00$155.304,900
1998-04-30$139.63$153.791,600
1998-04-29$139.00$153.103,200
1998-04-28$137.00$150.894,600
1998-04-27$137.50$151.452,300
1998-04-24$138.50$152.553,100
1998-04-23$137.50$151.45500
1998-04-22$137.50$151.451,000
1998-04-21$137.50$151.45200
1998-04-20$138.00$152.002,700
1998-04-17$136.56$150.41700
1998-04-16$137.00$150.89400
1998-04-15$137.06$150.964,600
1998-04-14$137.25$151.173,700
1998-04-13$136.25$150.072,100
1998-04-09$138.00$152.002,600
1998-04-08$137.25$151.173,400
1998-04-07$139.75$153.923,600
1998-04-06$139.50$153.651,200
1998-04-03$139.25$153.375,300
1998-04-02$137.50$151.454,600
1998-04-01$135.94$149.72800
1998-03-31$135.25$148.979,800
1998-03-30$136.44$150.274,900
1998-03-27$136.75$150.622,000
1998-03-26$137.31$151.242,900
1998-03-25$137.06$150.961,700
1998-03-24$137.00$150.89600
1998-03-23$136.75$150.621,100
1998-03-20$136.50$150.348,200
1998-03-19$137.00$150.891,800
1998-03-18$136.00$149.79700
1998-03-17$135.75$149.522,100
1998-03-16$135.25$148.97600
1998-03-13$135.00$148.691,200
1998-03-12$134.63$148.281,600
1998-03-11$133.25$146.76500
1998-03-10$133.00$146.490
1998-03-09$133.00$146.49900
1998-03-06$132.50$145.941,600
1998-03-05$133.00$146.498,200
1998-03-04$131.00$143.853,600
1998-03-03$129.00$141.6510,100
1998-03-02$130.63$143.434,300
1998-02-27$130.75$143.57116,700
1998-02-26$129.63$142.341,600
1998-02-25$130.00$142.755,000
1998-02-24$129.75$142.47600
1998-02-23$129.25$141.92500
1998-02-20$129.00$141.653,000
1998-02-19$129.50$142.204,800
1998-02-18$128.50$141.102,000
1998-02-17$127.00$139.455,700
1998-02-13$126.00$138.361,000
1998-02-12$126.25$138.63700
1998-02-11$126.50$138.900
1998-02-10$126.50$138.908,900
1998-02-09$126.50$138.903,500
1998-02-06$127.00$139.454,800
1998-02-05$128.00$140.551,300
1998-02-04$128.75$141.37400
1998-02-03$129.00$141.651,800
1998-02-02$130.38$143.167,900
1998-01-30$131.50$144.392,300
1998-01-29$132.00$144.941,700
1998-01-28$131.06$143.913,600
1998-01-27$131.00$143.85400
1998-01-26$131.25$144.12800
1998-01-23$131.00$143.85400
1998-01-22$131.00$143.851,300
1998-01-21$130.13$142.88200
1998-01-20$130.13$142.88900
1998-01-16$131.00$143.855,700
1998-01-15$129.50$142.20600
1998-01-14$129.50$142.202,600
1998-01-13$128.50$141.103,000
1998-01-12$127.13$139.596,000
1998-01-09$127.00$139.4518,900
1998-01-08$120.56$132.38500
1998-01-07$121.00$132.867,000
1998-01-06$123.25$135.343,900
1998-01-05$122.50$134.51300
1998-01-02$122.00$133.961,100