The investment seeks daily investment results that correspond to two times (2x) the daily performance of the Dow Jones U.S. SemiconductorsSM Index. The fund invests in securities and derivatives that ProShare Advisors believes, in combination, should have similar daily return characteristics as two times (2x) the daily return of the index. The index measures the performance of the semiconductor sub-sector of the U.S. equity market. Component companies are engaged in the production of semiconductors and other integrated chips, as well as other related products such as semi-conductor capital equipment and mother-boards. The fund is non-diversified.