Aurora Cannabis, also based in Canada, is the world’s second-largest marijuana company with a market capitalization of $5.12 billion.It also operates as a pharmaceutical wholesaler and narcotics dealer of medical marijuana in Germany and the European Union. In May, Aurora Cannabis agreed to acquire smaller rival MedReleaf Corp. for C$3.2 billion, marking its second acquisition this year. In January, the company and CanniMed Therapeutics Inc. ended a protracted takeover battle with a friendly $1.1 billion merger between the two marijuana giants. Aurora Cannabis is poised to be the world's largest marijuana company after completion of these acquisitions.