T. Rowe Price Extended Equity Market Index Fund

The fund will invest at least 80% of its net assets (including any borrowings for investment purposes) in stocks that are included in its benchmark index. The index is a sub-index of the S&P Total Market Index and measures the performance of all constituents in the S&P Total Market Index and consists of all constituents in the S&P Total Market Index that are not also constituents of the S&P 500.