BSV seeks to track the performance of the Bloomberg Barclays U.S. 1-5 Year Government/Credit Float Adjusted Index, which includes all medium and larger issues of U.S. government, investment-grade corporate, and investment-grade international dollar-denominated bonds that have maturities between 1 and 5 years and are publicly issued. As such, there's been a move into short-term exposure the past week in ETF fund flows for Vanguard products: At the top of the flow list is the Vanguard Short-Term Bond Index Fund ETF Shares (BSV). With inflationary pressures increasing, the shorter duration limits the damage if interest rates rise in the interim.