Strategy. The Fund invests in financial instruments that ProShare Advisors believes, in combination, should track the performance of the Index. The Index is designed to measure the performance of companies in the Nasdaq U.S. Large Cap Index whose stock prices have historically exhibited relatively high correlation to movements in interest rates. The Nasdaq U.S. Large Cap Index is designed to measure the performance of the largest companies in the United States. Each quarter, each company and each industry included in the Nasdaq U.S. Large Cap Index is evaluated and ranked based on its weekly market-neutral correlation with the U.S. 10-year Treasury yield over the prior three years. The five industries with the highest industry correlation are selected. Within each of those … Show more… The Fund invests in financial instruments that ProShare Advisors believes, in combination, should track the performance of the Index. The Index is designed to measure the performance of companies in the Nasdaq U.S. Large Cap Index whose stock prices have historically exhibited relatively high correlation to movements in interest rates. The Nasdaq U.S. Large Cap Index is designed to measure the performance of the largest companies in the United States. Each quarter, each company and each industry included in the Nasdaq U.S. Large Cap Index is evaluated and ranked based on its weekly market-neutral correlation with the U.S. 10-year Treasury yield over the prior three years. The five industries with the highest industry correlation are selected. Within each of those five industries, the 10 companies with the highest correlation are selected to be components of the Index. The components of the Index are weighted based on the rank of their industry and their market capitalization. The highest correlated industry receives a 30% weight in the Index; 2nd highest: 25%; 3rd highest: 20%; 4th highest: 15%; 5th highest: 10%. The Indexs composition and weightings are reevaluated quarterly in March, June, September, and December. The Index is constructed and maintained by Nasdaq Inc. More information about the Index can be found using the Bloomberg ticker symbol NQERRT. Under normal circumstances, the Fund will invest at least 80% of its total assets in components of the Index or in instruments with similar economic characteristics. The Fund will invest principally in the financial instruments listed below. ? Equity Securities Common stock issued by public companies. ProShare Advisors uses a mathematical approach to investing in which it determines the type, quantity and mix of investment positions that it believes, in combination, the Fund should hold to produce returns consistent with its investment objective. The Fund seeks to remain fully invested at all times in financial instruments that, in combination, provide exposure consistent with the investment objective, without regard to market conditions, trends or direction. The Fund will generally use a replication strategy to achieve its investment objective, meaning that it will invest in all of the component securities of the Index in approximately the same proportion as the Index. However, the Fund may also use a representative sampling strategy to invest in or gain exposure to only a representative sample of the securities in the Index or to securities not contained in the Index or in financial instruments, with the intent of obtaining exposure with aggregate characteristics similar to those of the Index. For example, the Fund may utilize a representative sampling strategy when the Advisor believes a replication strategy might be detrimental or disadvantageous to shareholders, such as when buying each security in an Index is impracticable or inefficient, or when there are practical difficulties or additional costs involved in replicating an Index. The Fund also may use representative sampling if the Advisor believes one or more securities in the Index becomes illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund. Please see Investment Objectives, Principal Investment Strategies and Related Risks in the Funds Prospectus for additional details. Show less