单向双向：某些产品的手续费只在开仓时收取，有些则在开仓和平仓时都收取； The Sensitivities process [2] involves initially calculating selection sensitivities called the Greeks because of the prevalent follow of symbolizing the sensitivities employing Greek letters. This method calculates the value of a trade according to the current and also the prior day's costs. The method for price t... https://johns639ejm2.wikifrontier.com/user