{"schema_version":"secwatch.filing_event.v1","accession":"0000776867-23-000005","form_type":"8-K","ticker":"WTM","cik":"0000776867","company_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","filed_at":"2023-05-09T23:59:59+00:00","discovered_at":"2026-05-14T18:03:42.210331+00:00","generated_at":"2026-06-15T10:53:38.464445+00:00","sec_items":["2.02","9.01"],"event_type":"earnings","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"White Mountains Q1 ABVPS up 5% to $1,567; Ark combined ratio 94%, GWP up 28%","bullets":["Comprehensive income attributable to common shareholders $180M vs $31M in Q1 2022.","Ark gross written premiums $809M (+28% YoY); combined ratio 94% (vs 100% Q1 2022).","Kudu adjusted EBITDA $11M; annualized adjusted EBITDA $37M; new deployment closed.","MediaAlpha investment value $254M, up from $169M at year-end; $85M mark-to-market gain.","Repurchased 18,623 shares for $25M at avg $1,360.30 (87% of ABVPS)."],"urls":{"canonical":"https://secwatch.observer/filing/0000776867-23-000005","json":"https://secwatch.observer/filing/0000776867-23-000005.json","markdown":"https://secwatch.observer/filing/0000776867-23-000005.md","text":"https://secwatch.observer/filing/0000776867-23-000005.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/776867/000077686723000005/0000776867-23-000005-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/776867/000077686723000005/wtm-20230509.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-15T10:53:38.464445+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":"07b213373df9666b1f6b014e5f61aae19070c22d","claim":"WHITE MOUNTAINS INSURANCE GROUP LTD reported financial results for the three months ended March 31, 2023.","evidence_excerpt":"White Mountains Insurance Group, Ltd. issued a press release announcing its results for the three months ended March 31, 2023.","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/776867/000077686723000005/0000776867-23-000005-index.htm","confidence":0.95,"family_label":"Earnings Releases","details":[{"label":"Period","value":"the three months ended March 31, 2023"},{"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"}