The MainStay MacKay High Yield Corporate Bond Fund, Class I (MHYIX) 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. With a focus on high-yield bonds, this fund may carry a higher level of risk but also has the potential for higher returns. As a Class I fund, it may have lower fees and expenses compared to other classes of the same fund. Overall, MHYIX offers investors the opportunity to diversify their portfolio and potentially earn attractive returns through investments in high-yield corporate bonds.