Shares of Agenus (AGEN) have gained 68.4% over the past four weeks to close the last trading session at $5, 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$6.33 indicates a potential upside of 26.6%.The mean estimate comprises three short-term price targets with a standard deviation of $2.08. While the lowest estimate of$4 indicates a 20% decline from the current price level, ...