Shares of West Pharmaceutical Services (WST) have gained 0.4% over the past four weeks to close the last trading session at $272.91, 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$345 indicates a potential upside of 26.4%.The mean estimate comprises 14 short-term price targets with a standard deviation of $28.55. While the lowest estimate of$285.00 indicates a 4.4% increase f ...