The margin level and the static collecting methods are analyzed,and the GARCH-GPD models based on semi-parametric methods are applied to calculate the margin level.

• 对国内现行保证金水平和静态收取方式进行分析和评价,用基于半参数方法的GARCH-GPD模型计算保证金比例,避免不当假设扰动项分布产生的错误。