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 financial instruments that ProShare Advisors believes, in combination, should produce daily returns consistent with the fund's investment objective. The index measures the performance of certain companies in the technology industry 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.