Stocks · Financials · Fire, Marine & Casualty Insurance

WHITE MOUNTAINS INSURANCE GROUP LTD

WTM Clue Score60
United States Fiscal year ends December CIK 0000776867
2,060.63
+0.04%
Close, 9 Oct 2026 · USD

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
2,060.63 on 9 Oct 2026
2,319 2,084 1,848 Oct 2025 Apr 2026 Oct 2026 13 Oct 2025 $1,903.24 14 Oct 2025 $1,933.01 15 Oct 2025 $1,892.01 16 Oct 2025 $1,847.67 17 Oct 2025 $1,913.20 20 Oct 2025 $1,932.23 21 Oct 2025 $1,920.91 22 Oct 2025 $1,902.19 23 Oct 2025 $1,937.93 24 Oct 2025 $1,916.14 27 Oct 2025 $1,932.90 28 Oct 2025 $1,901.30 29 Oct 2025 $1,897.99 30 Oct 2025 $1,907.00 31 Oct 2025 $1,904.56 3 Nov 2025 $1,899.87 4 Nov 2025 $1,920.60 5 Nov 2025 $1,897.42 6 Nov 2025 $1,892.02 7 Nov 2025 $1,908.46 10 Nov 2025 $1,901.76 11 Nov 2025 $1,925.01 12 Nov 2025 $1,934.47 13 Nov 2025 $1,915.09 14 Nov 2025 $1,924.67 17 Nov 2025 $1,900.00 18 Nov 2025 $1,900.34 19 Nov 2025 $1,889.30 20 Nov 2025 $1,881.61 21 Nov 2025 $2,000.00 24 Nov 2025 $1,996.99 25 Nov 2025 $2,003.65 26 Nov 2025 $2,029.06 28 Nov 2025 $2,024.25 1 Dec 2025 $2,024.89 2 Dec 2025 $2,027.41 3 Dec 2025 $2,025.55 4 Dec 2025 $2,037.79 5 Dec 2025 $2,034.79 8 Dec 2025 $2,013.52 9 Dec 2025 $2,018.75 10 Dec 2025 $2,040.94 11 Dec 2025 $2,044.87 12 Dec 2025 $2,054.51 15 Dec 2025 $2,068.17 16 Dec 2025 $2,045.31 17 Dec 2025 $2,046.65 18 Dec 2025 $2,040.00 19 Dec 2025 $2,042.02 22 Dec 2025 $2,083.14 23 Dec 2025 $2,090.90 24 Dec 2025 $2,088.05 26 Dec 2025 $2,062.34 29 Dec 2025 $2,075.53 30 Dec 2025 $2,078.62 31 Dec 2025 $2,078.03 2 Jan 2026 $2,041.90 5 Jan 2026 $2,062.86 6 Jan 2026 $2,047.31 7 Jan 2026 $2,059.54 8 Jan 2026 $2,074.49 9 Jan 2026 $2,048.45 12 Jan 2026 $2,060.84 13 Jan 2026 $2,057.99 14 Jan 2026 $2,076.96 15 Jan 2026 $2,061.92 16 Jan 2026 $2,056.36 20 Jan 2026 $2,045.45 21 Jan 2026 $2,073.85 22 Jan 2026 $2,071.97 23 Jan 2026 $2,056.64 26 Jan 2026 $2,076.93 27 Jan 2026 $2,052.44 28 Jan 2026 $2,039.19 29 Jan 2026 $2,052.17 30 Jan 2026 $2,044.93 2 Feb 2026 $2,056.36 3 Feb 2026 $2,056.30 4 Feb 2026 $2,086.14 5 Feb 2026 $2,126.57 6 Feb 2026 $2,185.00 9 Feb 2026 $2,098.78 10 Feb 2026 $2,114.10 11 Feb 2026 $2,143.84 12 Feb 2026 $2,182.01 13 Feb 2026 $2,188.07 17 Feb 2026 $2,230.83 18 Feb 2026 $2,202.12 19 Feb 2026 $2,201.23 20 Feb 2026 $2,228.13 23 Feb 2026 $2,189.34 24 Feb 2026 $2,223.42 25 Feb 2026 $2,220.28 26 Feb 2026 $2,222.97 27 Feb 2026 $2,220.51 2 Mar 2026 $2,244.14 3 Mar 2026 $2,215.09 4 Mar 2026 $2,223.79 5 Mar 2026 $2,188.94 6 Mar 2026 $2,165.60 9 Mar 2026 $2,148.65 10 Mar 2026 $2,223.46 11 Mar 2026 $2,212.14 12 Mar 2026 $2,182.05 13 Mar 2026 $2,194.70 16 Mar 2026 $2,199.69 17 Mar 2026 $2,206.81 18 Mar 2026 $2,185.01 19 Mar 2026 $2,181.16 20 Mar 2026 $2,155.01 23 Mar 2026 $2,162.99 24 Mar 2026 $2,211.91 25 Mar 2026 $2,205.51 26 Mar 2026 $2,220.71 27 Mar 2026 $2,153.86 30 Mar 2026 $2,193.86 31 Mar 2026 $2,196.96 1 Apr 2026 $2,178.44 2 Apr 2026 $2,169.76 6 Apr 2026 $2,203.96 7 Apr 2026 $2,215.73 8 Apr 2026 $2,277.21 9 Apr 2026 $2,309.92 10 Apr 2026 $2,301.14 13 Apr 2026 $2,297.99 14 Apr 2026 $2,300.00 15 Apr 2026 $2,291.46 16 Apr 2026 $2,294.72 17 Apr 2026 $2,319.41 20 Apr 2026 $2,275.01 21 Apr 2026 $2,276.34 22 Apr 2026 $2,269.19 23 Apr 2026 $2,285.39 24 Apr 2026 $2,259.27 27 Apr 2026 $2,267.56 28 Apr 2026 $2,263.69 29 Apr 2026 $2,206.00 30 Apr 2026 $2,231.99 1 May 2026 $2,163.50 4 May 2026 $2,167.41 5 May 2026 $2,151.67 6 May 2026 $2,080.00 7 May 2026 $2,092.50 8 May 2026 $2,128.40 11 May 2026 $2,133.58 12 May 2026 $2,109.20 13 May 2026 $2,119.91 14 May 2026 $2,112.72 15 May 2026 $2,136.76 18 May 2026 $2,138.35 19 May 2026 $2,144.19 20 May 2026 $2,144.81 21 May 2026 $2,139.09 22 May 2026 $2,146.85 26 May 2026 $2,129.17 27 May 2026 $2,101.94 28 May 2026 $2,084.31 29 May 2026 $2,064.82 1 Jun 2026 $2,062.03 2 Jun 2026 $2,050.81 3 Jun 2026 $2,034.02 4 Jun 2026 $2,015.54 5 Jun 2026 $2,065.14 8 Jun 2026 $2,023.70 9 Jun 2026 $2,004.76 10 Jun 2026 $2,018.89 11 Jun 2026 $1,989.54 12 Jun 2026 $2,024.05 15 Jun 2026 $2,030.64 16 Jun 2026 $2,032.37 17 Jun 2026 $2,003.49 18 Jun 2026 $2,013.36 22 Jun 2026 $2,010.75 23 Jun 2026 $2,023.63 24 Jun 2026 $2,022.41 25 Jun 2026 $2,019.70 26 Jun 2026 $2,096.56 29 Jun 2026 $2,090.94 30 Jun 2026 $2,073.39 1 Jul 2026 $2,064.04 2 Jul 2026 $2,173.81 6 Jul 2026 $2,166.27 7 Jul 2026 $2,165.85 8 Jul 2026 $2,167.25 9 Jul 2026 $2,185.23 10 Jul 2026 $2,181.19 13 Jul 2026 $2,174.96 14 Jul 2026 $2,167.79 15 Jul 2026 $2,139.73 16 Jul 2026 $2,196.48 17 Jul 2026 $2,211.52 20 Jul 2026 $2,211.22 21 Jul 2026 $2,193.26 22 Jul 2026 $2,182.32 23 Jul 2026 $2,176.85 24 Jul 2026 $2,208.05 27 Jul 2026 $2,193.94 28 Jul 2026 $2,202.61 29 Jul 2026 $2,150.34 30 Jul 2026 $2,118.61 31 Jul 2026 $2,097.73 3 Aug 2026 $2,101.47 4 Aug 2026 $2,117.86 5 Aug 2026 $2,111.91 6 Aug 2026 $2,141.09 7 Aug 2026 $2,149.44 10 Aug 2026 $2,109.68 11 Aug 2026 $2,112.01 12 Aug 2026 $2,119.46 13 Aug 2026 $2,141.42 14 Aug 2026 $2,137.12 17 Aug 2026 $2,113.40 18 Aug 2026 $2,145.46 19 Aug 2026 $2,129.20 20 Aug 2026 $2,117.70 21 Aug 2026 $2,110.95 24 Aug 2026 $2,132.30 25 Aug 2026 $2,141.20 26 Aug 2026 $2,132.74 27 Aug 2026 $2,127.57 28 Aug 2026 $2,135.41 31 Aug 2026 $2,102.01 1 Sep 2026 $2,098.96 2 Sep 2026 $2,104.75 3 Sep 2026 $2,112.23 4 Sep 2026 $2,103.49 8 Sep 2026 $2,052.48 9 Sep 2026 $2,050.81 10 Sep 2026 $2,075.99 11 Sep 2026 $2,053.15 14 Sep 2026 $2,057.00 15 Sep 2026 $2,045.94 16 Sep 2026 $2,062.37 17 Sep 2026 $2,058.32 18 Sep 2026 $2,061.30 21 Sep 2026 $2,056.85 22 Sep 2026 $2,053.64 23 Sep 2026 $2,032.01 24 Sep 2026 $2,029.33 25 Sep 2026 $2,028.62 28 Sep 2026 $2,014.97 29 Sep 2026 $2,021.51 30 Sep 2026 $2,006.49 1 Oct 2026 $2,013.04 2 Oct 2026 $2,020.92 5 Oct 2026 $2,019.44 6 Oct 2026 $2,037.25 7 Oct 2026 $2,031.50 8 Oct 2026 $2,059.77 9 Oct 2026 $2,060.63 Gelston Philip A Director Sold at will $338.00K 16 Dec 2025 · at $2,048.51 · 9.5% of stake CAMPBELL REID TARLTON Director Sold at will $0.00 19 Dec 2025 · at $0.00 · 32.4% of stake Rountree George Manning Chief Executive Officer Sold at will $10.25M 19 Dec 2025 · at $2,050.00 · 26.6% of stake
0 buys3 sales at will0 planned sales

Key numbers

Fiscal year 2025, ended 31 Dec 2025, as filed
Revenue
$3.74B
Net income
$1.11B
Free cash flow
$550.50M
Net margin
29.6%
Return on equity
20.4%
Debt to equity
0.15
Revenue growth, 1 yr
66.8%
Revenue growth, 5 yr
33.1% a year
EPS growth, 1 yr
379.1%

Revenue and net income

Fiscal years, as filed with the SEC · point at a year for the detail
896M 663M FY20 Fiscal year 2020 Revenue $895.60M Net income $663.40M Margin 74.1% 614M -275M FY21 Fiscal year 2021 Revenue $614.40M Net income $275.40M Margin -44.8% · growth -31.4% 1.2B 793M FY22 Fiscal year 2022 Revenue $1.16B Net income $792.80M Margin 68.5% · growth +88.5% 2.2B 509M FY23 Fiscal year 2023 Revenue $2.17B Net income $509.20M Margin 23.5% · growth +87.1% 2.2B 230M FY24 Fiscal year 2024 Revenue $2.24B Net income $230.40M Margin 10.3% · growth +3.4% 3.7B 1.1B FY25 Fiscal year 2025 Revenue $3.74B Net income $1.11B Margin 29.6% · growth +66.8%
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
19 Dec 2025 Rountree George Manning
Chief Executive Officer
Sold at will $10.25M 26.6%
19 Dec 2025 CAMPBELL REID TARLTON
Director
Sold at will $0.00 32.4%
16 Dec 2025 Gelston Philip A
Director
Sold at will $338.00K 9.5%
17 Nov 2023 Hicks Weston M
Director
Bought $1.48M 76.6%
22 Dec 2022 Hildreth Michaela
MD & Chief Accounting Officer
Sold, plan not stated $137.18K 6.4%
20 Sep 2022 DAVIS MORGAN W
Director
Sold, plan not stated $1.32M 12.0%