Shares of Natural Gas Services (NGS) have gained 38% over the past four weeks to close the last trading session at $24.95, but there could still be a solid upside left in the stock if short-term price targets of Wall Street analysts are any indication. Going by the price targets, the mean estimate of$36.25 indicates a potential upside of 45.3%.The mean estimate comprises four short-term price targets with a standard deviation of $5.97. While the lowest estimate of$32 indicates a 28.3% increase from the cu ...