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 approach [two] will involve initially calculating selection sensitivities referred to as the Greeks due to widespread observe of representing the sensitivities making use of Greek letters. This process calculates the value of a trade determined by The present plus the prior working day's prices. T... https://pnl89134.blogdigy.com/pnl-no-further-a-mystery-51399717