The MainStay MacKay High Yield Corporate Bond Fund, Class R3 (ticker: MHYTX) is a mutual fund that primarily invests in high-yield corporate bonds. This fund aims to provide investors with a steady stream of income through its portfolio of bonds issued by companies with lower credit ratings. The R3 class of this fund is designed for investors who are looking for a lower expense ratio and longer-term investment horizon. With a focus on high-yield bonds, this fund may offer potentially higher returns but also carries a higher level of risk. Overall, the MainStay MacKay High Yield Corporate Bond Fund, Class R3 is a suitable option for investors seeking income and willing to take on some risk in their portfolio.