Billionaire hedge fund investor Leon Cooperman, founder of Omega Advisors and former partner at Goldman Sachs, confirmed to CNBC Wednesday that he has invested his personal money in the cannabis space. His investments include CannTrust Holdings (OTC: CNTTF, TSX: TRST.TO) and Green Thumb Industries (OTC: GTBIF), whose founder, Ben Kovler, introduced Cooperman to the cannabis […]