The MainStay MacKay Total Return Bond Fund, Class I (MTMIX) is a mutual fund that aims to provide investors with a diversified portfolio of fixed-income securities. This fund primarily invests in a variety of bonds, including government, corporate, and mortgage-backed securities, with the goal of generating a total return for investors through a combination of interest income and capital appreciation. The Class I shares of this fund are typically available to institutional investors and have a lower expense ratio compared to other share classes. With a focus on risk management and a team of experienced managers, the MainStay MacKay Total Return Bond Fund, Class I offers investors a potential source of income and diversification for their overall investment portfolio.