Shares of Mattel (MAT) have gained 1% over the past four weeks to close the last trading session at $18.84, 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 $23.82 indicates a potential upside of 26.4%.The average comprises 11 short-term price targets ranging from a low of $20 to a high of $28, with a standard deviation of $2.56. While the lowest estimate indicates an increase of ...