Shares of Signet (SIG) have gained 7.1% over the past four weeks to close the last trading session at $96.46, 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 $123.20 indicates a potential upside of 27.7%.The average comprises five short-term price targets ranging from a low of $110 to a high of $152, with a standard deviation of $16.57. While the lowest estimate indicates an inc ...