An index comprised of the largest 100 stocks (according to the market capitalization) in the S&P 500 index. The returns we publish for the index are total returns, which include reinvestment of dividends. For more information, visit the Standard & Poor's Web site.
Note: We assume reinvestment of dividends on the last day of the month rather than everyday during the month. This may account for differences between the index returns published in Morningstar Office and the index returns published elsewhere.