The MainStay MacKay High Yield Corporate Bond Fund, Class B (MKHCX) 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 B fund, it may have a lower initial investment requirement and higher expense ratio compared to other classes of the same fund. Overall, MKHCX offers investors the potential for higher returns through its focus on high-yield bonds, but also carries a higher level of risk.