The past two weeks have seen cannabis stocks take a major hit. But according to Allison Ostrander, it shouldn't be a shock. There's was so much buzz and hype and they moved up so quickly. But she believes it's just a prelude to the next run up in prices. There's too many states and countries getting ready to legalize both medical and recreational cannabis. But you've got to be extremely careful in what stocks you invest in. There's some companies that will come to dominate the industry and others will fade by the wayside. Careful stock picking is essential.