The Zacks Share Buyback Index seeks to provide current income with the potential for capital appreciation by strategically selecting constituents that are incorporated in the U.S and trade on a major exchange as well as outperform, on a risk-adjusted basis, the Dow Jones U.S. Select Dividend Index and other dividend benchmarks. The index constituent selection methodology utilizes multi-factor proprietary rules to identify those stocks that offer the most attractive risk/return potential. The objective of the strategy is to create a high yield portfolio with reasonable sector, style, and capitalization diversification. The index is equally weighted and rebalanced quarterly after the close of the last business day in March, June, September and December.