Christopher R. Concannon has been serving as the Chief Executive Officer and Interim Chief Financial Officer at MarketAxess Holdings Inc. since April 2023. MarketAxess is a leading electronic trading platform for fixed-income securities and a provider of market data and post-trade services. In his role as CEO, Concannon is responsible for overseeing the strategic direction and operational performance of the company, while as Interim CFO, he manages the financial operations and planning. Before joining MarketAxess, Concannon had an extensive career in financial services. He previously served as the President and Chief Operating Officer of Cboe Global Markets, where he played a pivotal role in expanding the company's global presence and diversifying its product offerings. Prior to Cboe, he held the position of Co-Chief Operating Officer at BATS Global Markets, which was later acquired by Cboe. Concannon's experience also includes significant roles at Citigroup and Goldman Sachs, where he honed his skills in trading, sales, and operations. Throughout his career, Concannon has been recognized for his leadership and contributions to the financial industry. At MarketAxess, he is focused on driving innovation and growth, particularly in the areas of electronic trading and data services. His dual role as CEO and Interim CFO positions him to effectively steer the company through a period of transition and growth, leveraging his deep industry knowledge and strategic vision.