White Mountains Insurance Group - 15 Year Stock Price History | WTM

Historical daily share price chart and data for White Mountains Insurance Group since 2011 adjusted for splits and dividends. The latest closing stock price for White Mountains Insurance Group as of June 12, 2026 is 2024.05.
  • The all-time high White Mountains Insurance Group stock closing price was 2319.41 on April 17, 2026.
  • The White Mountains Insurance Group 52-week high stock price is 2333.00, which is 15.3% above the current share price.
  • The White Mountains Insurance Group 52-week low stock price is 1648.00, which is 18.6% below the current share price.
  • The average White Mountains Insurance Group stock price for the last 52 weeks is 1992.62.
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White Mountains Insurance Group Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2026 2150.3081 2040.9700 2319.4100 1989.5400 2024.0500 -2.55%
2025 1849.2061 1927.1700 2089.9500 1649.7500 2077.0800 6.89%
2024 1768.6965 1507.6300 2013.0100 1472.7200 1943.1400 29.31%
2023 1463.7752 1393.6100 1604.6200 1317.0100 1502.6800 6.49%
2022 1212.5550 1006.9800 1419.5700 1003.1200 1411.1000 39.63%
2021 1110.7476 1010.4600 1262.3600 983.7130 1010.6300 1.41%
2020 930.7237 1116.9600 1158.3600 693.2050 996.5840 -10.19%
2019 1002.1739 849.5520 1123.1400 845.3290 1109.6100 30.20%
2018 875.7578 841.6110 972.7720 783.0590 852.2250 0.88%
2017 867.3871 842.2260 938.7800 832.2230 844.8170 1.93%
2016 799.8806 712.9720 860.4660 692.5270 828.7930 15.17%
2015 695.5911 624.7800 799.9800 610.9400 719.5960 15.52%
2014 602.9950 592.9770 667.0020 551.9230 622.9110 4.66%
2013 569.7332 515.7010 602.4910 515.7010 595.1680 17.31%
2012 500.7283 448.1490 539.5110 432.5180 507.3280 13.80%
Sector Industry Market Cap Revenue
Finance Property, Casualty and Title Insurance $5.699B $3.735B
White Mountains Insurance Group, Ltd. is engaged in the business of property and casualty insurance and reinsurance.
Stock Name Country Market Cap PE Ratio
Berkshire Hathaway (BRK.A) United States $1035.525B 23.28
Berkshire Hathaway (BRK.B) United States $1035.305B 23.26
Chubb (CB) Switzerland $127.960B 13.21
Sampo (SAXPY) Finland $115.416B 18.26
Progressive (PGR) United States $113.559B 10.64
Tokio Marine Holdings (TKOMY) Japan $87.049B 16.08
Travelers (TRV) United States $63.210B 10.73
Allstate (ALL) United States $54.759B 6.04
MS&AD Insurances (MSADY) Japan $38.538B 7.66
Hartford Insurance (HIG) United States $37.857B 10.20
Fairfax Financial Holdings (FRFHF) Canada $37.137B 8.07
Arch Capital Group (ACGL) Bermuda $34.192B 9.72
Intact Financial (IFCZF) Canada $32.277B 13.23
Cincinnati Financial (CINF) United States $25.087B 20.27
W.R Berkley (WRB) United States $24.604B 15.31
RenaissanceRe Holdings (RNR) Bermuda $13.077B 7.62
CNA Financial (CNA) United States $12.746B 9.60
American Financial (AFG) United States $10.859B 12.70
Kinsale Capital (KNSL) United States $8.064B 17.85
Axis Capital Holdings (AXS) Bermuda $7.272B 7.57
First American Financial (FAF) United States $6.477B 10.45
Hanover Insurance (THG) United States $6.221B 9.26
Essent Group (ESNT) Bermuda $5.689B 8.78
RLI (RLI) United States $5.332B 16.43
Mercury General (MCY) United States $5.107B 11.67
Selective Insurance (SIGI) United States $4.786B 10.82
Hagerty (HGTY) United States $3.810B 26.48
Palomar Holdings (PLMR) United States $3.411B 17.80
NMI Holdings Inc (NMIH) United States $2.940B 7.86
Skyward Specialty Insurance (SKWD) United States $2.030B 11.36
Stewart Information Services (STC) United States $1.965B 13.24
HCI (HCI) United States $1.939B 6.58
Exzeo (XZO) United States $1.352B 0.00
ProAssurance (PRA) United States $1.258B 15.05
Safety Insurance (SAFT) United States $1.098B 13.07
United Fire (UFCS) United States $1.003B 8.51
UNIVERSAL INSURANCE HOLDINGS INC (UVE) United States $0.963B 5.55
Heritage Insurance Holdings (HRTG) United States $0.804B 4.14
Bowhead Specialty Holdings (BOW) United States $0.784B 14.47
Root (ROOT) United States $0.684B 18.97
Donegal (DGICB) United States $0.648B 8.63
Donegal (DGICA) United States $0.640B 7.97
Greenlight Capital Re (GLRE) Cayman Islands $0.628B 8.47
American Coastal Insurance (ACIC) United States $0.558B 5.51
Investors Title (ITIC) United States $0.435B 12.41
Global Indemnity (GBLI) United States $0.399B 14.42
American Integrity Insurance (AII) United States $0.357B 3.25
Kingsway Financial Services (KFS) United States $0.329B 0.00
NI Holdings (NODK) United States $0.265B 0.00
Kingstone (KINS) United States $0.218B 5.52
First Acceptance (FACO) United States $0.188B 6.36
Roadzen (RDZN) United States $0.084B 0.00
American Overseas Group (AOREF) Bermuda $0.058B 5.37