ProShares S&P MidCap 400 Div Aristocrats 

Under ordinary market conditions, this fund is structured to commit a significant majority—at least 80% of its overall investments—to the specific stocks that make up its reference index. This underlying index is composed of a minimum of 40 individual companies, each assigned an identical weighting within the portfolio. Furthermore, to promote diversification, no single industry sector is permitted to constitute more than 30% of the index's total value.