对MBS有个principal pay down window的概念,the time period between the first and last principal payments on a CMO tranche(notes第四本206页),这个与average life的概念是不是等同的呢?因为average life的定义是the weighted averge time until both scheduled principal payments and expected prepayments are received。我觉得这俩概念是不是一个意思?作者: apf薛老师 时间: 2013-9-25 15:42