PROSHARES ULTRASHORT MIDCAP400 ETF

The investment seeks daily investment results, before fees and expenses, that correspond to two times the inverse (-2x) of the daily performance of the S&P MidCap 400® Index. The fund invests in financial instruments that ProShare Advisors believes, in combination, should produce daily returns consistent with the fund's investment objective. The index is a measure of mid-size company U.S. stock market performance. The fund is non-diversified.