{"schema_version":"secwatch.filing_event.v1","accession":"0000776867-24-000009","form_type":"8-K","ticker":"WTM","cik":"0000776867","company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","filed_at":"2024-05-09T23:59:59+00:00","discovered_at":"2026-05-14T18:03:21.954249+00:00","generated_at":"2026-06-02T07:39:58.837707+00:00","sec_items":["2.02","9.01"],"event_type":"earnings","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"White Mountains Q1 ABVPS up 6% to $1,797; MediaAlpha gain $211M","bullets":["Comprehensive income $236M vs $180M YoY; driven by $211M MediaAlpha unrealized gains.","Ark combined ratio 94%; gross written premiums $872M (+8% YoY).","Bamboo managed premiums $90M (3x YoY); MGA adj. EBITDA $6M.","BAM insured $3.6B municipal bonds (+24% YoY); gross premiums $22M.","Kudu adj. EBITDA $14M; trailing 12-month net investment income up 4% QoQ."],"urls":{"canonical":"https://secwatch.observer/filing/0000776867-24-000009","json":"https://secwatch.observer/filing/0000776867-24-000009.json","markdown":"https://secwatch.observer/filing/0000776867-24-000009.md","text":"https://secwatch.observer/filing/0000776867-24-000009.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/776867/000077686724000009/0000776867-24-000009-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/776867/000077686724000009/wtm-20240509.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-02T07:39:58.837707+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"5c5894e5f06882b3a0b5aab936c00c101eb407c5","claim":"WHITE MOUNTAINS INSURANCE GROUP LTD reported the three months ended March 31, 2024 results: net income Comprehensive income attributable to common shareholders was $236 million.","evidence_excerpt":"White Mountains Insurance Group, Ltd. issued a press release announcing its results for the three months ended March 31, 2024.","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/776867/000077686724000009/0000776867-24-000009-index.htm","confidence":0.7,"family_label":"Earnings Releases","details":[{"label":"Period","value":"the three months ended March 31, 2024"},{"label":"Net income","value":"Comprehensive income attributable to common shareholders was $236 million"},{"label":"Result","value":"reported results"}],"fact_type":"earnings_release"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}