{"success":true,"meta":{"generated_at":"2026-07-08T12:24:33.941Z","source":"SEC EDGAR 13F","license":"https://www.sec.gov/about/website-policies"},"data":{"ticker":"WTM","cusip":"G9618E107","company_name":"WHITE MTNS INS GROUP LTD","url":"https://superinvestorclub.com/stock/WTM","markdown_url":"https://superinvestorclub.com/stock/WTM/llm.txt","num_owners":2,"total_value":42352995,"total_shares":"018864414","owners":[{"manager_id":15,"manager_name":"Longleaf Partners","fund_name":"Southeastern Asset Management","shares":"18864","value":41443454,"pct_of_portfolio":2.038764035430886,"period_of_report":"2026-03-31","security_type":"SH","manager_url":"https://superinvestorclub.com/manager/15"},{"manager_id":6,"manager_name":"Ray Dalio","fund_name":"Bridgewater Associates","shares":"414","value":909541,"pct_of_portfolio":0.004059626786263498,"period_of_report":"2026-03-31","security_type":"SH","manager_url":"https://superinvestorclub.com/manager/6"}],"history":[{"period_of_report":"2024-03-31","total_value":44333564,"total_shares":"024708","num_owners":1,"managers":[{"manager_id":15,"manager_name":"Longleaf Partners","shares":"24708","value":44333564,"change_type":"UNCHANGED"}]},{"period_of_report":"2024-06-30","total_value":40309223,"total_shares":"021423756","num_owners":2,"managers":[{"manager_id":15,"manager_name":"Longleaf Partners","shares":"21423","value":38935231,"change_type":"REDUCED"},{"manager_id":6,"manager_name":"Ray Dalio","shares":"756","value":1373992,"change_type":"NEW"}]},{"period_of_report":"2024-09-30","total_value":35176000,"total_shares":"020738","num_owners":1,"managers":[{"manager_id":15,"manager_name":"Longleaf Partners","shares":"20738","value":35176000,"change_type":"REDUCED"},{"manager_id":6,"manager_name":"Ray Dalio","shares":0,"value":0,"change_type":"SOLD"}]},{"period_of_report":"2024-12-31","total_value":37430734,"total_shares":"019244","num_owners":1,"managers":[{"manager_id":15,"manager_name":"Longleaf Partners","shares":"19244","value":37430734,"change_type":"REDUCED"}]},{"period_of_report":"2025-03-31","total_value":35596671,"total_shares":"018484","num_owners":1,"managers":[{"manager_id":15,"manager_name":"Longleaf Partners","shares":"18484","value":35596671,"change_type":"REDUCED"}]},{"period_of_report":"2025-06-30","total_value":37878918,"total_shares":"021094","num_owners":1,"managers":[{"manager_id":15,"manager_name":"Longleaf Partners","shares":"21094","value":37878918,"change_type":"INCREASED"}]},{"period_of_report":"2025-09-30","total_value":52906951,"total_shares":"031652","num_owners":1,"managers":[{"manager_id":15,"manager_name":"Longleaf Partners","shares":"31652","value":52906951,"change_type":"INCREASED"}]},{"period_of_report":"2025-12-31","total_value":65773805,"total_shares":"031652","num_owners":1,"managers":[{"manager_id":15,"manager_name":"Longleaf Partners","shares":"31652","value":65773805,"change_type":"UNCHANGED"}]},{"period_of_report":"2026-03-31","total_value":42352995,"total_shares":"018864414","num_owners":2,"managers":[{"manager_id":15,"manager_name":"Longleaf Partners","shares":"18864","value":41443454,"change_type":"REDUCED"},{"manager_id":6,"manager_name":"Ray Dalio","shares":"414","value":909541,"change_type":"NEW"}]}]}}