Record day driven by market volatility prompting strong market volumes and notable uptake of client and algo trading

MarketAxess Holdings Inc. (Nasdaq: MKTX), the operator of a leading electronic trading platform for fixed-income securities, today announced that its Rates business reported an all-time single-day record of $102.3 billion U.S. Government Bonds notional traded on April 9.

“We’re thrilled to see this growth in our client business. We’re seeing clients increasingly seek out firm sources of liquidity like Live Markets^® to weather periods of market volatility like we experienced last week,” said Chris Good, Head of Rates at MarketAxess. “We’re also excited to see increased adoption of our algos in times of volatility as we continue to innovate and expand our offering with the addition of Pragma technology.”

Following the launch of an expanded algo suite for Rates, MarketAxess also plans to introduce enhanced Request for Quote (RFQ) for U.S. Government Bonds allowing dealers expanded reach through the MarketAxess client network.

For more information on MarketAxess Rates, visit: https://www.marketaxess.com/trade/rates

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.

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 planned launch of new products or protocols. 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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“We’re thrilled to see this growth in our client business. We’re seeing clients increasingly seek out firm sources of liquidity like Live Markets® to weather periods of market volatility like we experienced last week,” said Chris Good.