{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-248462","form_type":"8-K","ticker":"MKTX","cik":"0001278021","company_name":"MARKETAXESS HOLDINGS INC","filed_at":"2023-10-02T23:59:59+00:00","discovered_at":"2026-05-14T18:03:28.511925+00:00","generated_at":"2026-06-10T06:17:30.887938+00:00","sec_items":["8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"MarketAxess completes acquisition of Pragma, a quantitative trading technology firm","bullets":["Acquisition of all outstanding ownership interests in Pragma Financial Systems LLC and Pragma LLC completed on October 2, 2023.","Pragma specializes in algorithmic and analytical services for quantitative trading.","CEO Chris Concannon expects to extend Pragma's algorithm platform to enhance AI-powered fixed-income trading.","No financial terms of the deal were disclosed in the completion announcement."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-248462","json":"https://secwatch.observer/filing/0001193125-23-248462.json","markdown":"https://secwatch.observer/filing/0001193125-23-248462.md","text":"https://secwatch.observer/filing/0001193125-23-248462.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1278021/000119312523248462/0001193125-23-248462-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1278021/000119312523248462/d505885d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T06:17:30.887938+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"}