MarketAxess to Host Conference Call Announcing Third Quarter 2025 Financial Results on Friday, November 7, 2025

About this update from Marketaxess Holdings, Inc.

NEW YORK --(BUSINESS WIRE)-- MarketAxess Holdings Inc. (Nasdaq: MKTX) the operator of a leading electronic trading platform for fixed-income securities, will issue a press release announcing its third quarter 2025 financial results on Friday, November 7, 2025 , before the market opens. Chris Concannon , Chief Executive Officer, and Ilene Fiszel Bieler , Chief Financial Officer, will host a conference call to provide a strategic update and discuss the Company’s financial results and outlook on Friday, November 7, 2025 at 11:00 a.m. ET . To access the conference call, please dial +1-646-307-1963 ( U.S. /International) and use the ID 1832176. The Company will also host a live audio Webcast of the conference call on the Investor Relations section of the Company's website at http://investor.marketaxess.com . The Webcast will also be archived on http://investor.marketaxess.com for 90 days following the announcement. About MarketAxess MarketAxess (Nasdaq: MKTX) operates a leading electronic trading platform that delivers greater trading efficiency, a diversified pool of liquidity and significant cost savings to institutional investors and broker-dealers across the global fixed-income markets. Approximately 2,100 firms leverage MarketAxess’ patented technology to efficiently trade fixed-income securities. Our automated and algorithmic trading solutions, combined with our integrated and actionable data offerings, help our clients make faster, better-informed decisions on when and how to trade on our platform. MarketAxess’ award-winning Open Trading® marketplace is widely regarded as the preferred all-to-all trading solution in the global credit markets. Founded in 2000, MarketAxess connects a robust network of market participants through an advanced full trading lifecycle solution that includes automated trading solutions, intelligent data and index products and a range of post-trade services. Learn more at www.marketaxess.com and on X @MarketAxess . View source version on businesswire.com : https://www.businesswire.com/news/home/20251016989182/en/ INVESTOR RELATIONS Stephen Davidson MarketAxess Holdings Inc. +1 212 813 6313 [email protected] MEDIA RELATIONS Marisha Mistry MarketAxess Holdings Inc. +1 917 267 1232 [email protected] Source: MarketAxess Holdings Inc.

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