Stocks of many companies with little fundamental value can embark on fantastic runs, making heaps of money for bullish traders before collapsing and making just as much money for the bears.

• 很多公司，基本面不怎么好，但是股票能狂涨，股价崩溃前能让做多的交易者赚到很多钱，同样下跌时也能赚到这么多钱。