The investment seeks investment results before fees and expenses that track the performance of the Credit Suisse 130/30 Large Cap Index (the "index"). The fund invests in securities and derivatives that ProShare Advisors believes, in combination, should track the performance of the index. The index is designed to replicate an investment strategy that establishes either long or short positions in the stocks of 500 leading large-cap U.S. companies (the "Universe") by applying a rules-based ranking and weighting methodology. The fund is non-diversified.