Grupo Aeroportuario del Centro Norte (NASDAQ: OMAB) has been beaten down lately with too much selling pressure. While the stock has lost 16.7% over the past four weeks, there is light at the end of the tunnel as it is now in oversold territory and Wall Street analysts expect the company to report better earnings than they predicted earlier. Guide to Identifying Oversold Stocks We use Relative Strength Index (RSI), one of the most commonly used technical indicators, for spotting whether a stock is oversold. This is a momentum oscillator that measures the speed and change of price movements. RSI oscillates between zero and 100. Usually, a stock is considered oversold when its RSI reading falls below ...