Jon Vacko is responsible for portfolio management and investment research. He joined the firm in 2000 and has 26 years of industry experience. Prior to joining Calamos, Jon was a credit analyst with Duff & Phelps Credit Rating (now part of Fitch Ratings) in the Financial Institutions Group and served as an examiner with the Federal Reserve Bank of Chicago. He received a B.B.A. in Finance from the University of Wisconsin and an M.B.A from the University of Chicago.