Vanguard Intermediate-Term Treasury Index Fund ETF Shares

Under normal circumstances, the fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the bonds that make up the Bloomberg U.S. Treasury 3-10 Year Index. The fund invests by sampling the Target Index, meaning that it holds a range of securities that, in the aggregate, approximates the full Target Index in terms of key risk factors and other characteristics.