Looking for the best pot stocks to buy doesn’t always involve direct investments in marijuana companies. Sometimes, investors could bet indirectly on the institutional investors that have a big stake in cannabis companies. For instance, investors can invest in a tobacco company Altria (NYSE: MO) as a way to profit from marijuana. Back in December 2018, Altria acquired a 45% stake in Canadian marijuana producer Cronos Group (CRON Stock Report) for $1.8 billion. Altria also has a warrant that allows it to increase its stake in Cronos to 55%. Should Altria decide to exercise its warrant, it will gain majority control of Cronos. That could pave the way for Altria to take over the whole of Cronos. Of course, this is speculative at best.