Calamos Investments is a global investment firm that offers innovative investment strategies to individuals and institutions. The firm was founded in 1977 by John Calamos, Sr. and has since grown to manage over $20 billion in assets. Calamos Investments is known for its expertise in convertible securities and has been recognized for its investment performance and risk management capabilities. The firm's investment philosophy is centered around a disciplined approach to investing that seeks to identify undervalued securities with strong growth potential. Calamos Investments is headquartered in Naperville, Illinois and has additional offices in New York, San Francisco, and London.