CNN's money section publishes information about publicly traded marijuana stocks. American Green (ERBB), CannaGrow Holdings (CGRW), Hemp (HEMP), Medical Marijuana (MJNA) and WeedHire International (WDHR) are all publicly traded on small exchanges. As of 2015, GW Pharmaceuticals (GWPH) is the only marijuana-related business to be traded on a major exchange.
As of 2015, marijuana is heavily restricted and only legal for sale in certain U.S. states, posing challenges for investors and managers. CNN recommends that investors investigate these companies for regulatory compliance before buying their stocks, and an interviewed attorney has stated that the industry has problems with legitimacy and fraud.