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 [2] includes 1st calculating solution sensitivities known as the Greeks because of the typical practice of representing the sensitivities making use of Greek letters. Esto en realidad puede llevar a graves dificultades a la hora de elaborar un mensaje, ya que centrarnos en las reacciones o https://pnl65318.governor-wiki.com/1421301/the_ultimate_guide_to_pnl