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 — 2000

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2000-12-29$319.00$362.0816,000
2000-12-28$311.13$353.1520,500
2000-12-27$304.00$345.069,300
2000-12-26$295.00$334.844,900
2000-12-22$292.00$331.447,500
2000-12-21$287.88$326.751,800
2000-12-20$288.38$327.321,100
2000-12-19$289.88$329.032,200
2000-12-18$287.13$325.903,700
2000-12-15$285.94$324.562,700
2000-12-14$287.00$325.764,000
2000-12-13$288.00$326.90700
2000-12-12$287.00$325.7611,800
2000-12-11$282.00$320.094,400
2000-12-08$277.94$315.484,300
2000-12-07$277.94$315.482,600
2000-12-06$278.00$315.5519,200
2000-12-05$277.88$315.402,900
2000-12-04$277.75$315.261,900
2000-12-01$279.00$316.681,800
2000-11-30$279.50$317.2515,100
2000-11-29$285.00$323.49900
2000-11-28$281.00$318.951,300
2000-11-27$280.00$317.823,700
2000-11-24$286.00$324.63500
2000-11-22$284.50$322.921,600
2000-11-21$284.44$322.851,800
2000-11-20$285.00$323.492,800
2000-11-17$285.00$323.495,900
2000-11-16$280.00$317.8219,200
2000-11-15$280.00$317.828,000
2000-11-14$272.00$308.746,300
2000-11-13$270.50$307.037,800
2000-11-10$274.00$311.014,000
2000-11-09$269.00$305.335,200
2000-11-08$264.00$299.663,400
2000-11-07$255.00$289.44800
2000-11-06$255.50$290.016,300
2000-11-03$257.00$291.711,900
2000-11-02$258.00$292.852,700
2000-11-01$259.00$293.985,500
2000-10-31$263.00$298.5213,800
2000-10-30$243.00$275.82700
2000-10-27$239.75$272.132,900
2000-10-26$240.00$272.413,800
2000-10-25$242.00$274.683,200
2000-10-24$243.00$275.822,000
2000-10-23$241.50$274.122,300
2000-10-20$244.13$277.102,600
2000-10-19$247.50$280.933,400
2000-10-18$248.00$281.4913,600
2000-10-17$251.00$284.904,000
2000-10-16$262.00$297.399,500
2000-10-13$253.00$287.1719,200
2000-10-12$247.00$280.3612,400
2000-10-11$257.00$291.716,800
2000-10-10$248.00$281.497,900
2000-10-09$239.00$271.282,800
2000-10-06$239.00$271.2813,700
2000-10-05$242.00$274.687,800
2000-10-04$246.00$279.2212,800
2000-10-03$251.00$284.9015,600
2000-10-02$260.00$295.1213,000
2000-09-29$272.88$309.7341,800
2000-09-28$258.00$292.8593,200
2000-09-27$252.00$286.0386,300
2000-09-26$230.00$261.0670,000
2000-09-25$212.13$240.7794,400
2000-09-22$174.50$198.0710,400
2000-09-21$170.50$193.532,100
2000-09-20$170.00$192.961,200
2000-09-19$170.50$193.534,400
2000-09-18$166.75$189.272,300
2000-09-15$165.75$188.147,100
2000-09-14$166.38$188.854,100
2000-09-13$166.25$188.2510,000
2000-09-12$166.25$188.2543,500
2000-09-11$164.75$186.551,600
2000-09-08$164.75$186.55400
2000-09-07$165.00$186.8311,000
2000-09-06$164.88$186.692,000
2000-09-05$165.00$186.836,200
2000-09-01$164.00$185.70600
2000-08-31$163.00$184.571,200
2000-08-30$163.00$184.57600
2000-08-29$162.00$183.442,200
2000-08-28$163.00$184.571,800
2000-08-25$162.25$183.723,100
2000-08-24$164.13$185.842,100
2000-08-23$163.00$184.57500
2000-08-22$163.50$185.146,100
2000-08-21$163.69$185.351,700
2000-08-18$163.50$185.14300
2000-08-17$163.75$185.42200
2000-08-16$164.00$185.701,600
2000-08-15$162.56$184.07800
2000-08-14$163.00$184.5711,600
2000-08-11$157.06$177.853,900
2000-08-10$158.88$179.902,100
2000-08-09$156.00$176.646,100
2000-08-08$155.00$175.514,600
2000-08-07$156.00$176.645,600
2000-08-04$155.50$176.08300
2000-08-03$155.25$175.791,300
2000-08-02$156.94$177.701,300
2000-08-01$156.44$177.141,700
2000-07-31$157.00$177.78100
2000-07-28$157.00$177.784,000
2000-07-27$161.00$182.3018,700
2000-07-26$159.00$180.046,900
2000-07-25$160.00$181.172,100
2000-07-24$159.88$181.033,200
2000-07-21$159.75$180.890
2000-07-20$159.75$180.89900
2000-07-19$159.94$181.101,900
2000-07-18$159.50$180.612,800
2000-07-17$160.00$181.173,800
2000-07-14$163.00$184.572,500
2000-07-13$162.00$183.441,800
2000-07-12$162.50$184.0011,400
2000-07-11$164.00$185.707,100
2000-07-10$164.50$186.275,600
2000-07-07$162.25$183.726,900
2000-07-06$161.00$182.306,800
2000-07-05$161.00$182.300
2000-07-03$161.00$182.301,100
2000-06-30$160.00$181.1725,500
2000-06-29$161.00$182.304,900
2000-06-28$160.00$181.173,600
2000-06-27$160.00$181.171,400
2000-06-26$160.75$182.02600
2000-06-23$161.00$182.3013,600
2000-06-22$160.00$181.17900
2000-06-21$160.00$181.177,500
2000-06-20$159.75$180.891,200
2000-06-19$160.81$182.094,000
2000-06-16$162.00$183.4426,000
2000-06-15$160.00$181.1728,700
2000-06-14$154.25$174.218,900
2000-06-13$150.00$169.4112,800
2000-06-12$149.00$168.285,500
2000-06-09$149.06$168.3514,000
2000-06-08$148.00$167.152,300
2000-06-07$147.00$166.028,600
2000-06-06$146.00$164.897,000
2000-06-05$145.00$163.765,800
2000-06-02$144.50$163.2010,700
2000-06-01$143.50$162.0712,400
2000-05-31$141.19$159.46400
2000-05-30$141.31$159.606,000
2000-05-26$140.88$159.1020,700
2000-05-25$140.50$158.6810,000
2000-05-24$141.50$159.8122,400
2000-05-23$140.63$158.828,800
2000-05-22$140.31$158.471,800
2000-05-19$141.00$159.241,000
2000-05-18$142.00$160.372,800
2000-05-17$143.50$162.07800
2000-05-16$143.13$161.644,000
2000-05-15$138.75$156.701,500
2000-05-12$137.25$155.015,700
2000-05-11$137.25$155.015,700
2000-05-10$137.25$155.01300
2000-05-09$137.75$155.57800
2000-05-08$138.00$155.864,900
2000-05-05$141.00$159.245,600
2000-05-04$139.25$157.277,600
2000-05-03$141.31$159.60700
2000-05-02$141.00$159.243,300
2000-05-01$140.56$158.752,500
2000-04-28$139.06$157.069,700
2000-04-27$135.75$153.3110,300
2000-04-26$136.75$154.443,900
2000-04-25$136.00$153.607,100
2000-04-24$132.00$149.081,600
2000-04-20$131.00$147.952,900
2000-04-19$131.50$148.526,000
2000-04-18$131.75$148.809,300
2000-04-17$127.00$143.433,700
2000-04-14$126.38$142.7327,400
2000-04-13$126.00$142.3016,600
2000-04-12$129.00$145.699,500
2000-04-11$129.50$146.267,500
2000-04-10$129.13$145.836,300
2000-04-07$131.75$148.808,200
2000-04-06$132.75$149.933,000
2000-04-05$133.00$150.216,300
2000-04-04$133.00$150.215,400
2000-04-03$133.88$151.203,800
2000-03-31$134.13$151.4810,400
2000-03-30$134.94$152.407,100
2000-03-29$131.75$148.805,600
2000-03-28$130.00$146.8210,900
2000-03-27$133.44$150.702,500
2000-03-24$134.94$152.406,800
2000-03-23$134.25$151.624,200
2000-03-22$134.50$151.9013,600
2000-03-21$135.50$153.0322,600
2000-03-20$136.00$153.602,600
2000-03-17$135.81$153.394,800
2000-03-16$137.00$154.737,100
2000-03-15$134.00$151.3410,700
2000-03-14$134.00$151.3421,300
2000-03-13$125.25$141.4629,700
2000-03-10$119.00$134.4017,500
2000-03-09$112.50$127.0615,900
2000-03-08$102.00$114.758,400
2000-03-07$102.88$115.7317,900
2000-03-06$104.75$117.844,500
2000-03-03$106.50$119.8114,700
2000-03-02$109.50$123.183,300
2000-03-01$111.13$125.018,600
2000-02-29$110.25$124.036,400
2000-02-28$106.19$119.468,600
2000-02-25$106.50$119.814,400
2000-02-24$108.81$122.412,200
2000-02-23$109.00$122.6221,900
2000-02-22$109.00$122.623,600
2000-02-18$109.00$122.6211,600
2000-02-17$110.00$123.757,300
2000-02-16$111.06$124.947,700
2000-02-15$113.06$127.195,300
2000-02-14$113.13$127.2610,200
2000-02-11$113.88$128.113,600
2000-02-10$114.63$128.9511,200
2000-02-09$112.63$126.705,700
2000-02-08$112.38$126.42400
2000-02-07$112.50$126.562,300
2000-02-04$112.63$126.704,200
2000-02-03$112.13$126.143,500
2000-02-02$112.25$126.285,600
2000-02-01$112.31$126.3511,600
2000-01-31$112.50$126.5610,800
2000-01-28$111.50$125.4310,600
2000-01-27$111.00$124.8710,800
2000-01-26$113.50$127.689,100
2000-01-25$113.50$127.6810,900
2000-01-24$115.00$129.379,700
2000-01-21$117.00$131.629,200
2000-01-20$119.50$134.438,400
2000-01-19$116.00$130.506,000
2000-01-18$115.75$130.217,100
2000-01-14$115.00$129.376,600
2000-01-13$117.50$132.184,000
2000-01-12$118.00$132.759,700
2000-01-11$119.25$134.152,200
2000-01-10$118.00$132.7513,200
2000-01-07$118.25$133.033,400
2000-01-06$119.00$133.871,800
2000-01-05$119.88$134.8510,300
2000-01-04$116.50$131.0638,600
2000-01-03$117.50$132.1819,700