HYG provides a broad representation of the U.S. dollar-denominated high yield liquid corporate bond market. The high yield bond space has been cracked wide open by ETFs, as these products have offered numerous ways for investors to take advantage of this space. High yields can be a great addition to a yield-starved portfolio, as they can offer yields into the double digits for those willing to take on the risks that come along with it. The high returns come from riskier bond choices who have to pay out higher ratios to compensate investors for high risks. this means that the holdings of these ETFs will have higher chances of defaults, and could potentially leave investors out to dry.