Rescheduling cannabis to a Schedule 3 drug, if it happens, represents a long-term industry tailwind. In the short term, there is still tons of red tape before any schedule change becomes legally effective. Proven growth in an unpredictable sectorGreen Thumb sells packaged cannabis products and owns 108 RISE Dispensaries across 14 states. Two wildly different ways to invest in cannabis stocksGreen Thumb International is more of a pure-play cannabis company, directly involved in growing and selling marijuana. The company also stands to gain if cannabis stocks see higher margins, because its tenants become less risky.