What were are seeing is stock manipulation By daytraders, the street, and institutions.
One day, these traders run the stock up, and the next day, they short the stock.
There is no reason---no news to short the stock. What you are seeing is a game....
Those lacking knowledge, are thinking OMG, I don't want to miss out, so they get caught---become a bagholder.
And, these traders know exactly how to do it---It is intentional.
The pot stocks are the most volatile----due to stock runups and then shorting.