Company:  WHITE MOUNTAINS INSURANCE ... (WTM)
Form Type:  10-Q
Filing Date:  5/1/2009 
CIK:  0000776867 
Address:  80 SOUTH MAIN ST 
City, State, Zip:  HANOVER, New Hampshire 03755 
Telephone:  603 640 2200 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$324.10  
Change: 
6.90 (2.18%)  
Trade Time: 
Feb 09  
Market Cap: 
$2.87B
Description of Business
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  FORM 10-Q
    PART I. FINANCIAL INFORMATION.
      Item 1. Financial Statements
        BALANCE SHEET
        INCOME STATEMENT
        STOCKHOLDERS EQUITY
        CASH FLOW
        NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
      Item 2. Management's Discussion and Analysis of Financial ...
      FINANCIAL STATEMENTS
        STOCKHOLDERS EQUITY
      Item 3. Quantitative and Qualitative Disclosures About ...
      Item 4. Controls and Procedures.
    Part II. OTHER INFORMATION
      Item 1. Legal Proceedings.
      Item 1A. Risk Factors
      Item 2. Unregistered Sales of Equity Securities and Use ...
      Item 3. Defaults Upon Senior Securities.
      Item 4. Submission of Matters to a Vote of Security ...
      Item 5. Other Information.
      Item 6. Exhibits.
    SIGNATURES
  EXHIBIT 31.1
    PRINCIPAL EXECUTIVE OFFICER CERTIFICATION PURSUANT TO RULE ...
  EXHIBIT 31.2
    PRINCIPAL FINANCIAL OFFICER CERTIFICATION PURSUANT TO RULE ...
  EXHIBIT 32.1
    CERTIFICATION PURSUANT TO
  EXHIBIT 32.2
    CERTIFICATION PURSUANT TO
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