{"schema_version":"secwatch.filing_event.v1","accession":"0000947484-26-000051","form_type":"8-K","ticker":"ACGL","cik":"0000947484","company_name":"ARCH CAPITAL GROUP LTD.","filed_at":"2026-04-28T23:59:59+00:00","discovered_at":"2026-05-14T18:02:33.962578+00:00","generated_at":"2026-05-15T03:38:53.916379+00:00","sec_items":["2.02","9.01"],"event_type":"earnings","sentiment":"positive","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Arch Capital Q1 net income $1.0B ($2.88 EPS); operating ROE 15.4%","bullets":["Net income $1.0B vs $564M in Q1 2025; diluted EPS $2.88 vs $1.48.","After-tax operating income $901M ($2.50 per share); annualized operating ROE 15.4%.","Combined ratio 81.7% (82.3% ex-cat & prior-year development); prior-year reserve favorable development of $200M.","Share repurchases of $783M during Q1; book value per share $66.19 (+1.7% from Dec 2025).","Gross premiums written $6.4B (flat YoY); net premiums earned $4.0B (-4.8% YoY)."],"urls":{"canonical":"https://secwatch.observer/filing/0000947484-26-000051","json":"https://secwatch.observer/filing/0000947484-26-000051.json","markdown":"https://secwatch.observer/filing/0000947484-26-000051.md","text":"https://secwatch.observer/filing/0000947484-26-000051.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/947484/000094748426000051/0000947484-26-000051-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/947484/000094748426000051/acgl-20260428.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T03:38:53.916379+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":"8583f39bcf4a57a869942043f52a09d622166b8a","claim":"ARCH CAPITAL GROUP LTD. reported the quarter ended March 31, 2026 results: net income $1.0 billion, EPS $2.88 per share.","evidence_excerpt":"Group Ltd. (NASDAQ: ACGL; “Arch,” “our” or “the Company”) announces its 2026 first quarter results. The results included: • Net income available to Arch common shareholders of $1.0 billion, or $2.88 per share, representing a 17.8% annualized net income return on average common equity, compared to net income available to Arch common shareholders of $564 million, or","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/947484/000094748426000051/0000947484-26-000051-index.htm","confidence":0.95,"family_label":"Earnings Releases","details":[{"label":"Period","value":"the quarter ended March 31, 2026"},{"label":"Net income","value":"$1.0 billion"},{"label":"EPS","value":"$2.88 per share"},{"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"}