Global spending on legal cannabis is expected to grow 230% to $31.3% billion in 2022 as compared to $9.5 in 2017, according to Arcview Market Research and BDS Analytics. The research projects a majority of that, nearly $23.4 billion will come from the United States. In context of more states voting in favor of marijuana use legalization and business interest sparking across the board, that definitely would make sense.
In the year through January 11, 2019, the United States Marijuana Index, fell 20.7%, as compared to about 6.5% loss seen by the S&P 500. Given that is not exactly an apples to apples comparison, but it does make a case to at least investigate investments in marijuana stocks. (May 6, 2019, Mrinalini Krishna, Investopedia)
