Never mind, just read the sites basics for dummies -- Many times it can take between 5 and 15 days worth of trading volume to buy back all of the shares that are short. This powerful relationship between total number of shares short and average daily trading volume is called the "short interest ratio" or "days-to-cover". This is an indicator of upside potential in a stock and the higher this number, the more powerful the upside potential a stock has if a short covering should be triggered. -- Is 7.5 a high number?