{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-25-049650","form_type":"8-K","ticker":"MIAX","cik":"0001438472","company_name":"MIAMI INTERNATIONAL HOLDINGS, INC.","filed_at":"2025-11-05T23:59:59+00:00","discovered_at":"2026-05-14T18:02:39.418070+00:00","generated_at":"2026-05-17T00:14:25.858301+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":"MIH Q3 net revenue +57% to $109.5M; GAAP net loss $102.1M due to IPO/debt extinguishment costs","bullets":["Net revenue $109.5M (+57% YoY); options segment net revenue $94.5M (+55%).","GAAP net loss $102.1M ($1.46 diluted EPS loss); adjusted diluted EPS $0.42 (up 282% YoY).","Adjusted EBITDA $48.0M, more than doubling YoY; margin expanded to 44% from 27%.","IPO raised $396.8M in August 2025; repaid $178.4M senior secured debt in September.","Options exchanges achieved record 9.6M ADV contracts, 17.2% market share; TISE acquisition contributed $5.5M intl. net revenue."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-25-049650","json":"https://secwatch.observer/filing/0001628280-25-049650.json","markdown":"https://secwatch.observer/filing/0001628280-25-049650.md","text":"https://secwatch.observer/filing/0001628280-25-049650.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1438472/000162828025049650/0001628280-25-049650-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1438472/000162828025049650/miax-20251105.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T00:14:25.858301+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"}