Shares of Shift4 Payments (FOUR) have gained 17.2% over the past four weeks to close the last trading session at $90.26, 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$114.83 indicates a potential upside of 27.2%.The average comprises 23 short-term price targets ranging from a low of $80 to a high of$150, with a standard deviation of $15.53. While the lowest estimate indicate ...