The Direxion Monthly S&P 500 Bear 2X Fund Investor Class (DXSSX) is a mutual fund that seeks to provide investors with twice the inverse return of the S&P 500 Index on a monthly basis. This means that when the S&P 500 Index decreases, the fund aims to increase by twice that amount, and vice versa. This fund is designed for investors who are looking to hedge against potential market downturns or to take advantage of short-term market movements. It is important to note that this fund is not suitable for long-term investments and carries a higher level of risk due to its leveraged nature.