The investment seeks daily investment results that correspond to two times (2x) the daily performance of the Dow Jones U.S. TechnologySM 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 technology sector of the U.S. equity market. Component companies include, among others, those involved in computers and office equipment, software, communications technology, semiconductors, diversified technology services and Internet services. The fund is non-diversified.