{"schema_version":"secwatch.filing_event.v1","accession":"0000947484-23-000052","form_type":"8-K","ticker":"ACGL","cik":"0000947484","company_name":"ARCH CAPITAL GROUP LTD.","filed_at":"2023-04-26T23:59:59+00:00","discovered_at":"2026-05-14T18:03:42.965901+00:00","generated_at":"2026-06-16T15:12:27.244418+00:00","sec_items":["2.02","9.01"],"event_type":"earnings","sentiment":"positive","materiality_score":0.8,"calibrated_materiality_score":0.8,"confidence":"high","headline":"Arch Capital Q1 net income $705M ($1.87/sh) vs $186M; book value up 8.4%","bullets":["Net income $705M ($1.87/sh) vs $186M ($0.48/sh) in Q1 2022; after-tax operating income $654M ($1.73/sh).","Gross premiums written $4.78B (+25.8% YoY); net premiums earned $2.88B (+35.9%).","Combined ratio 80.6% vs 78.7% (cat losses $79M); underwriting income $570M (+24.5%).","Book value per share $35.35, up 8.4% from Dec 2022; favorable prior year development $126M.","Underwriting expense ratio improved to 29.6% from 31.5%."],"urls":{"canonical":"https://secwatch.observer/filing/0000947484-23-000052","json":"https://secwatch.observer/filing/0000947484-23-000052.json","markdown":"https://secwatch.observer/filing/0000947484-23-000052.md","text":"https://secwatch.observer/filing/0000947484-23-000052.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/947484/000094748423000052/0000947484-23-000052-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/947484/000094748423000052/acgl-20230426.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-16T15:12:27.244418+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":"cd153e6ac04519e993c82d34efda38425f165e73","claim":"ARCH CAPITAL GROUP LTD. reported the quarter ended March 31, 2023 results: net income $705 million, EPS $1.87 per share.","evidence_excerpt":"Arch Capital Group Ltd. (NASDAQ: ACGL; “Arch” or “the Company”) announces its 2023 first quarter results. The results included: • Net income available to Arch common shareholders of $705 million, or $1.87 per share","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/947484/000094748423000052/0000947484-23-000052-index.htm","confidence":0.9,"family_label":"Earnings Releases","details":[{"label":"Period","value":"the quarter ended March 31, 2023"},{"label":"Net income","value":"$705 million"},{"label":"EPS","value":"$1.87 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"}