Vanguard Bond Index Funds - Vanguard Intermediate-Term Bond ETF is an exchange traded fund launched and managed by The Vanguard Group, Inc. The fund invests in the fixed income markets of the United States. It invests in investment-grade debt securities including government, corporate, and international dollar-denominated bonds with maturities between 5 and 10 years that are rated BBB- or above by S&P.