| ProShares S&P 500 Ex-Health Care ETF seeks investment results, before fees and expenses, that track the performance of the S&P 500 Ex-Health Care Index. The index seeks to provide exposure to the companies of the S&P 500 with the exception of those companies included in the health care sector. The S&P 500 is a measure of large-cap U.S. stock market performance. It is a float-adjusted, market capitalization-weighted index of 500 U.S. operating companies and real estate investment trusts selected through a process that factors in criteria such as liquidity, price, market capitalization and financial viability. The index classifies each company in the S&P 500 as part of a particular sector, using S&Ps Global Industry Classification Standards ("S&P GICS") to define companies within a sector. The following sectors are included within S&P GICS: consumer discretionary, consumer staples, energy, financials, health care, industrials, information technology, materials, telecommunication services and utilities. For example, the health care sector comprises companies in, among others, the health care provider, services, and technology industries. The index consists of companies from each of the sectors other than the health care sector. Each security in the index is market-cap weighted according to the same rules as the S&P 500. |