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 technique [2] includes to start with calculating option sensitivities generally known as the Greeks due to common apply of representing the sensitivities making use of Greek letters. The equilibrium sheet is typically offered as of the last working day of the corporate’s fiscal 12 months. Investor... waiting for link from Press Release (104)