A drop in volatility raises profits and here is your trader, your expert, telling you that, happily, volatility has indeed gone down. 시스템은 견제와 균형을 위해 비명을 지르는데, 이는 모든 훌륭한 딜러가 가지고 있는 것입니다. Internally, they will probably have independents who check the assumptions of the traders.