A study conducted in Europe advanced arguments for marijuana law reform around the world.Whenever there's news about potential marijuana legalization anywhere in the world -- or at least some measure of decriminalization -- the few publicly traded pot companies tend to benefit. This was the case on Tuesday with big multistate operator Curaleaf (CURLF 4.90%), as a new study undertaken on the other side of the world illustrated the benefits of making the drug legal. The company's share price was up by nearly ...