1988, Hunter filed for bankruptcy. One of the reasons for Hunter's failure is that the competent department changed the rules, but Hunter did not violate the rules. Another reason is leverage. Hunter bought a lot of physical silver when the price was very low. Even if the price dropped sharply, he could not lose money. However, the price of a large number of futures contracts after that is much higher. Leveraged products can make you feel good or go to hell.