What is an ultra-short bond ETF?

Ultra-short bond ETFs aim for very low duration, often using short-maturity corporate bonds, government bills, and other short-term instruments. The goal is to provide a yield pick-up over cash with limited volatility.

However, not all ultra-short funds are equally conservative. Some take meaningful credit risk or use less liquid securities to boost yield.

If you're considering one, look at credit quality, holdings, and how it performed in stress periods. For "cash-like" use, stability and liquidity may matter more than squeezing out a bit of extra yield.