Twenty years ago, it was vilified as a ‘gateway drug’. Now, cannabis has grown into a big business, with the potential to become even bigger as laws are scheduled to change to reflect shifting social attitudes towards marijuana and investment picks up to take advantage of increased demand.

And make no mistake: the demand is huge. In the United States, the legal cannabis industry is worth $6.7 billion, according to Bloomberg. Actively watching the industry include: Altria Group (NYSE: MO), Insys Therapeutics (NASDAQ: INSY), GW Pharmaceuticals (NASDAQ: GWPH), Teva Pharmaceuticals (NYSE: TEVA), MedReleaf Corp (OTC: MEDFF) (TSX: LEAF.TO)

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