NEW YORK--(BUSINESS WIRE)--MarketAxess Holdings Inc. (Nasdaq: MKTX), the operator of a leading electronic trading platform for fixed-income securities, today announced trading volume and preliminary variable transaction fees per million ("FPM†) for September 2025 and the third quarter ended September 30, 2025.1 Chris Concannon, CEO of MarketAxess, commented: "Despite historic levels of new issuance in U.S. credit in September, which dampened our estimated market share in the month, we set a new. ...