MarketAxess Holdings Inc. (Nasdaq: MKTX), the operator of a leading electronic trading platform for fixed-income securities, today announced the appointment of Spencer Lee as Head of Client Product, Americas.

As Head of Client Product in the Americas, Mr. Lee will be responsible for the business and product management across U.S. high-grade, U.S. high-yield, municipals, dealer and client solutions, as well as MarketAxess X-Pro, the company’s next generation trading platform.

“Spencer is a well-known and respected leader in the fixed-income markets. He will bring tremendous fixed-income trading experience, market structure expertise, an invaluable buy-side perspective to MarketAxess and will further product advancement for our clients,” Chris Concannon, Chief Executive Officer at MarketAxess. “I look forward to his contributions as part of my global management team as we continue our goal of accelerating innovation and efficiency across fixed-income markets globally."

Mr. Lee most recently held the role of Chief Markets Officer at TS Imagine. He has over two decades of experience as a fixed-income trader, where he was an advocate for the adoption of technology and the development of systematic trading of credit securities. Prior to TS Imagine, he co-founded Agilon Capital, a systematic credit hedge fund, and led global credit electronic trading and West Coast fixed-income trading at BlackRock.

“I’ve spent most of my career on a pursuit of building the best buy-side trader workflows in the market,” said Mr. Lee. “I am excited to be marking the next chapter of this journey at MarketAxess, as I believe my time as a trader and experience in helping adapt EMS technology to the fixed-income markets have uniquely prepared me to lead this product team in the next phase of innovation.”

Mr. Lee will join MarketAxess on May 12, 2025 and will report to Chris Concannon.

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.

Cautionary Note Regarding Forward-Looking Statements

This press release may contain forward-looking statements, including statements within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995 with respect to the Company’s goals. These and other statements that relate to future results and events are based on MarketAxess’ current expectations. Many factors could cause actual future events to differ materially from the forward-looking statements in this press release. Please refer to the periodic filings MarketAxess makes with the Securities and Exchange Commission. These filings identify and address other important risks and uncertainties that could cause events and results to differ materially from those contained in the forward-looking statements set forth in this press release. The Company undertakes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise. More information about these and other factors affecting MarketAxess’ business and prospects is contained in MarketAxess’ periodic filings with the Securities and Exchange Commission and can be accessed at www.marketaxess.com.

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