Shares of Great Lakes Dredge & Dock (GLDD) have gained 3.2% over the past four weeks to close the last trading session at $11.92, 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$15 indicates a potential upside of 25.8%.The mean estimate comprises four short-term price targets with a standard deviation of $1.41. While the lowest estimate of$14.00 indicates a 17.5% increase from ...