Executive Officers

Dan Dufresne

Executive Vice President, Chief Operating Officer

Dan Dufresne leads trading, IT, operations, marketing, and product strategy. Dan joined Calamos Investments in 2021 with 25 years of finance industry experience.

Prior to joining Calamos, Dan spent 21 years at Citadel where he served in several key roles, including Global Treasurer, Global Head of Operations, and Global Head of Counterparty Strategy. He was Chief Executive Officer of multiple Citadel broker-dealer entities and a member of the governing portfolio committees of both Citadel and Citadel Securities for many years. 

Dan has served on key finance industry forums, including the New York Fed’s Task Force on Tri-Party Repo Infrastructure, 11 years on the New York Fed’s Treasury Market Practices Group, and five years on the U.S. Treasury Department's Treasury Borrowing Advisory Committee, where he was Vice-Chair through September 2020. He was named to Crain's Chicago Business "Forty Under Forty" in 2009. 

Dan holds a B.S. from Cornell University and an M.B.A. with honors from the University of Chicago Booth School of Business.