A description of the price range of a stock on a particularly volatile day of trading. Wide-ranging days occur when the high and low prices of a stock are much farther apart than they were the day before. Some technical analysts identify these days by using the volatility ratio. Wide-ranging days mean the most to traders after a strong day of trading. One of these days after a sharp up- or downtrend can indicate that the trend will reverse. Extreme wide-ranging days generally portend a major reversal.