Wednesday arrived with a rush of news for investors in the cannabis industry -- little of it good. In rapid succession, marijuana producer Aurora Cannabis ( ACB 0.65% ) first saw its price target raised, then announced a big issuance and sale of stock, and then got its price target cut (along with its stock rating). Soon after, rival cannabis company Tilray ( TLRY ) was also downgraded. And, as bad news continued to flood the industry, tiny HEXO ( HEXO ) found it impossible to fight the tide.