John P. Calamos Sr. is Chairman, CEO and Global Co-Chief Investment Officer of Calamos Investments, a firm he founded in 1977. With origins as an institutional convertible bond manager, Calamos Investments has grown into a diversified asset management firm with major institutional and individual clients around the world. Calamos' research and investment processes center on a team-based approach aimed at delivering superior risk-adjusted performance over full market cycles through a range of U.S. and global investment strategies. With 45 years of industry experience, Calamos appears regularly on CNBC, Bloomberg TV and Fox Business Channel, is a frequent speaker at investment seminars and conferences around the world, and is often quoted in the financial press.

Calamos is the author of two books about convertible securities. He is also chairman of the National Hellenic Museum in Chicago. A former Air Force Major and combat pilot in Vietnam, he holds an undergraduate degree in economics and an M.B.A. in finance from the Illinois Institute of Technology.