XSHQ's relevance is increasing at a time when many market participants are fretting about inflation — fears that are heightening at the hands of Wednesday's reading of the Consumer Price Index (CPI). Enter the Invesco S&P SmallCap Quality ETF (XSHQ), one of a small number of small-cap exchange traded funds dedicated to the quality factor. XSHQ follows the S&P SmallCap 600 Quality Index, which is the quality derivative of the widely tracked S&P SmallCap 600 Index.