The Vanguard Short-Term Bond ETF (BSV) brought in $13.2 billion YTD in flows and offered investors exposure to bonds across various types with a maturity between one and five years. BSV carries an expense ratio of 0.05%. The iShares TIPS Bond ETF (TIP) garnered $11.4 billion in flows YTD and offers investors exposure to U.S. government bonds with adjustable principal, depending on inflation measurements.