The Metropolitan West Flexible Income Fund (MWFSX) is a mutual fund that aims to provide investors with a flexible and diversified income portfolio. The fund invests in a variety of fixed income securities, including government and corporate bonds, as well as mortgage-backed securities. The "M Share" designation indicates that this fund is designed for institutional investors, with a lower expense ratio and potentially higher minimum investment requirements. Overall, MWFSX offers a balanced approach to generating income and managing risk for investors.