{"schema_version":"secwatch.filing_event.v1","accession":"0000947484-26-000118","form_type":"8-K","ticker":"ACGL","cik":"0000947484","company_name":"ARCH CAPITAL GROUP LTD.","filed_at":"2026-07-28T20:04:34+00:00","discovered_at":"2026-07-28T20:06:00.479064+00:00","generated_at":"2026-07-28T20:06:44.129095+00:00","sec_items":["2.02","9.01"],"event_type":"earnings","sentiment":"negative","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Arch Capital Q2 net income falls to $1.0B from $1.2B; combined ratio worsens to 83.5%","bullets":["Net income available to common shareholders $1.0B ($3.00/diluted share) vs $1.2B ($3.23) in Q2 2025.","After-tax operating income $893M ($2.56/share) vs $979M ($2.58) in prior year.","Combined ratio 83.5% vs 81.2% a year ago; ex-cat and prior year development 82.5% vs 80.9%.","Gross premiums written $6.1B (-1.1% YoY); net premiums written $4.0B (-6.9%).","Book value per share $68.04, up 2.8% from Q1; share repurchases $1.2B in quarter."],"urls":{"canonical":"https://secwatch.observer/filing/0000947484-26-000118","json":"https://secwatch.observer/filing/0000947484-26-000118.json","markdown":"https://secwatch.observer/filing/0000947484-26-000118.md","text":"https://secwatch.observer/filing/0000947484-26-000118.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/947484/000094748426000118/0000947484-26-000118-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/947484/000094748426000118/acgl-20260728.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-07-28T20:06:44.129095+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}