The Nuveen Strategic Income Fund CLASS R6 (ticker: FSFRX) is a mutual fund that aims to provide investors with a diversified portfolio of fixed income securities. This fund primarily invests in a mix of high-quality corporate bonds, government bonds, and mortgage-backed securities. It also has the flexibility to invest in other types of fixed income securities, such as emerging market debt and high-yield bonds. The R6 class of this fund is designed for institutional investors and has a lower expense ratio compared to other classes. Overall, the Nuveen Strategic Income Fund CLASS R6 offers a balanced approach to generating income and managing risk for investors seeking exposure to the fixed income market.