Shares of Rigel Pharmaceuticals (RIGL) have gained 53.5% over the past four weeks to close the last trading session at 22.74,buttherecouldstillbeasolidupsideleftinthestockifshort−termpricetargetsofWallStreetanalystsareanyindication.Goingbythepricetargets,themeanestimateof29.17 indicates a potential upside of 28.3%.The mean estimate comprises six short-term price targets with a standard deviation of 18.89.Whilethelowestestimateof14 indicates a 38.4% decline from the ...