Which Cannabis Stocks to Buy? Stick With U.S. Multi-State Operators The U.S. is the market to be in, and thereâs one easy way to buy all the most promising stocks. Plus, one Canadian and one international pick. Author: Apr 26, 2021 8:00 AM EDT We’re overthinking cannabis investments. The United States is the market investors should hang their hat on. Yes, I believe there is a Canadian name and an international name to consider, but the multi-state operators (MSOs) in the U.S. have the biggest market and the biggest opportunity. Already, numbers here are crushing it in terms of both growth and revenue. What’s more amazing is cannabis isn’t even federally legal and dozens of states still don’t allow sales or only allow medical sales. There is plenty of upside still to be had.