The MassMutual RetireSMART 2050 Fund Service Class (MMTSX) is a mutual fund designed for investors who are planning to retire in the year 2050. This fund is managed by MassMutual, a reputable financial services company, and aims to provide a diversified portfolio of investments to help investors reach their retirement goals. The service class designation indicates that this fund is available for purchase through a financial advisor or other financial professional. MMTSX may be a suitable option for those looking for a long-term investment strategy with a target retirement date of 2050.