Why Hexo, Canopy Growth, and Aurora Cannabis Stocks Are Dropping Today Rich Smith What happened On a bright day for the stock market in general -- the S&P 500 is up a solid 1.5% -- marijuana stocks are wilting today. As of 2:35 p.m. EDT, three of the best-known names in the sector, Hexo (NYSE: HEXO), Aurora Cannabis (NYSE: ACB), are down 3.1%, 3.6%, and 5.3%, respectively. So what Scan the newsfeeds today, and there's no bad news to be found. No negative press releases from any of the companies themselves. No downgrades from stock market analysts -- not so much as a lowered price target.