The MainStay MacKay High Yield Corporate Bond Fund, Class R1 (MHHRX) 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 interest payments from these bonds, while also seeking to achieve capital appreciation. As a Class R1 fund, it is designed for retirement accounts and has a lower expense ratio compared to other classes of the same fund. With a focus on high-yield bonds, this fund may carry a higher level of risk but also has the potential for higher returns.