Fund Description: Vanguard Extended Market ETF, formerly Vanguard Extended Market VIPERs, is an exchange-traded index fund or Index ETF which is a separate investment portfolio of the Vanguard Index Funds, an open-end investment management company. INVESTMENT OBJECTIVE: The Vanguard Extended Market ETF seeks to provide investment returns that closely correspond to the price and yield performance of the Standard & Poor‘s Completion Index. INDEX DESCRIPTION: The Standard & Poor’s Completion Index is a broadly diversified index of stocks of small- and medium-size U.S. companies. The Index contains all of the U.S. common stocks regularly traded on the New York and American Stock Exchanges and the Nasdaq over-the-counter market, except those stocks included in the Standard & Poor’s 500 Index. FUND STRATEGY: The Fund employs an indexing investment approach designed to track the performance of the Index. The Fund invests all, or substantially all, of its assets in stocks of its Index, with nearly 80% of its assets invested in approximately 1,200 of the stocks in its target index (covering nearly 85% of the Index’s total market capitalization), and the rest of its assets in a representative sample of the remaining stocks. The Fund holds a broadly diversified collection of securities that, in the aggregate, approximates the full Index in terms of key characteristics. These key characteristics include industry weightings and market capitalization, as well as certain financial measures, such as price/earnings ratio and dividend yield. FUND MANAGEMENT: The Vanguard Group, Inc. serves as investment advisor to the Fund.