FEDERALSEC 10-K Item 1CFirst filing
Filed Feb 24, 2026bd_39a6517de7d43c7e
MarketAxess Holdings Inc. (CIK 0001278021) Form 10-K annual report for fiscal year ended December 31, 2025. The supplied document body contains only the XBRL header, cover-page metadata, and form identification — no narrative cybersecurity incident disclosure (Item 1C content) is present in the provided excerpt. No breach details, affected individual counts, threat actor information, or remediation actions are extractable from this content.