The Invesco DB Oil Fund ETF (DBO) is an exchange-traded fund that aims to track the price performance of the DBIQ Optimum Yield Crude Oil Index Excess Return, which makes this one of several exchange-traded funds on the market that uses futures as a way of providing investors with exposure to commodity markets. In this case, that commodity is West Texas Intermediate crude oil, which is the North American crude oil benchmark. This differentiates it from Brent crude oil, which is the global benchmark and is g ...