About Calamos Calamos Investments®* is a globally diversified investment firm serving the needs of institutional and individual investors for over 35 years. The company's clients include public and private pensions, foundations, endowments, corporations, financial advisors, families and individuals from around the world who have entrusted the firm with $34.3 billion in total assets, which includes assets under management as well as $1.1 billion for which the company provides through its subsidiaries model portfolio design and oversight, as of September 30, 2012.