TTER2024-01-20 16:21:02
第一题,有两个点想确认下:1)做immunization只能针对单一liability做吗,还是也可以对多个liability一起做?2)immunization方法在期间需要不断的做balance以保持duration asset和duration liability相等么?那cash flow matching要做balance吗?以及total return mandate的几种方法需要做rebalance吗?谢谢
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梁雪2024-01-20 21:49:19
同学你好,
1、immunization包括了single liability以及multiple liability,条件是不太一样的。
2、随着时间变化,利率改变,使得asset duration和liability duration不一致,因此需要rebalance。the portfolio must be regularly rebalanced over the horizon to maintain the target duration, because the portfolio Macaulay duration changes as time passes and as yields change.
3、Cash flow matching 是持有到期策略,因此eliminate the interest rate risk,基于此不需要rebalance。
4、原版书中提到By matching portfolio performance as closely as possible, investment managers also seek to minimize tracking error, limit the need to purchase or sell thinly traded securities, and/or frequently rebalance the portfolio as would be required when precisely matching the index.因此,在total return mandate也需要 Rebalance。
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