The Calamos Global Total Return Fund (CGO) is a mutual fund that seeks to provide investors with a diversified portfolio of global securities, including stocks, bonds, and other assets. The fund is managed by Calamos Investments and aims to generate long-term capital appreciation and income for its shareholders. With a focus on global markets, the fund offers investors exposure to a wide range of industries and regions, providing potential for growth and risk management. CGO may be a suitable option for investors looking for a well-rounded, actively managed fund with a global perspective.