ProShares UltraShort Oil & Gas (the Fund) seeks daily investment results that correspond to twice the inverse daily performance of the Dow Jones U.S. Oil & Gas Index. The Dow Jones U.S. Oil & Gas Index measures the performance of the oil and gas industry of the United States equity market. Component companies include oil drilling equipment and services, oil companies (major and secondary), pipelines, liquid, solid or gaseous fossil fuel producers and service companies. The Fund takes positions in securities and/or financial instruments that, in combination, should have similar daily return characteristics as -200% of the daily return of the index. The Fund�s investment advisor is ProShare Advisors LLC.