The Calamos Total Return Bond Fund - Class A (CTRAX) is a mutual fund that primarily invests in a diversified portfolio of fixed income securities, including government and corporate bonds, mortgage-backed securities, and other debt instruments. The fund aims to provide investors with a total return that exceeds the benchmark index, while also managing risk through active management and diversification. With a focus on income generation and capital preservation, CTRAX may be suitable for investors seeking a balanced approach to fixed income investing.