John P. Calamos, Sr. is the Chairman, CEO and Co-CIO of Calamos Investments (NASDAQ: CLMS), a $32.4 billion* global investment firm offering equity, fixed income, convertible and alternative strategies.  Calamos services affluent families, family offices and institutions around the globe from locations in Illinois, New York and London.

John Calamos, Sr. founded Calamos Investments in 1977 and took Calamos Asset Management public in 2004. He has developed pioneering investment strategies and techniques to control risk, preserve capital and build wealth for clients over the long term.  

Mr. Calamos has authored two books, “Investing in Convertible Securities: Your Complete Guide to the Risks and Rewards” and “Convertible Securities: the Latest Instruments, Portfolio Strategies and Valuation Analysis.”  He received his undergraduate degree in economics and an M.B.A. in finance from the Illinois Institute of Technology.

Mr. Calamos is often quoted as an authority on risk-managed strategies in Barron’s, Fortune, Forbes, Pensions & Investments, IPE, Financial World, Nation’s Business and The Wall Street Journal.  As an active philanthropist in the Greek community, he has been honored for his lifetime contributions by the Hellenic Bar Association.


John Calamos
Chairman, CEO, CIO
Calamos Wealth Management, LLC

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