The cannabis stocks are high as a kite! The question is, will they continue to fly or will they crash and burn. The big reason for the latest move in the cannabis stocks is the prospect for more mergers & acquisitions, and big private investments in public cannabis companies. The latest deal that got investors juices flowing was the announcement by Constellation Brands (STZ) that they made an additional investment into Canopy Growth (WEED.TO in Canada, CGC in the US), one of the big if not biggest cannabis players in Canada.