S&P 500 Buyback Index Definition
What Is the S&P 500 Buyback Index? The S&P 500 Buyback Index tracks the performance of the 100 S&P 500 stocks with the highest buyback ratios over the past 12 months. The S&P 500 Buyback Index is equal-weighted and rebalanced quarterly, with the rebalancing reference dates occurring on the last trading day of each calendar