Shares of First Majestic Silver (AG) have gained 2.2% over the past four weeks to close the last trading session at $16.87, 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 $26.03 indicates a potential upside of 54.3%.The mean estimate comprises six short-term price targets with a standard deviation of $3.75. While the lowest estimate of $22.50 indicates a 33.4% increase from the ...