SMDD provides daily geared inverse (-3x) exposure to the S&P mid-cap 400 Index, a market cap-weighted index that measures mid-size company US stock market performance and factors in criteria such as liquidity, price, market capitalization, and financial viability. The fund will generally invest in derivatives and money-market instruments. As a levered product, SMDD presents different risks than other types of funds and is thus not a buy-and-hold investment. It should not be expected to provide index leverage returns greater than a one-day period.