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罗Luo · 2022年04月01日

选项A _surplus optimization, 为何不正确?

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NO.PZ201803130100000105

问题如下:

The asset allocation approach most appropriate for client Kealoha is best described as:

选项:

A.

a surplus optimization approach.

B.

an integrated asset–liability approach.

C.

a hedging/return-seeking portfolios approach.

解释:

C is correct.

The hedging/return-seeking portfolios approach is best for this client. Beade should construct two portfolios, one that includes riskless bonds that will pay of the fixed obligation in 10 years and the other a risky portfolio that earns a competitive risk-adjusted return. This approach is a simple two step process of hedging the fixed obligation and then investing the balance of the assets in a return-seeking portfolio.

选项A _surplus optimization, 为何不正确?


Surplus也能保证obligation和return seeking两个目标啊!

1 个答案

郭静_品职助教 · 2022年04月02日

嗨,努力学习的PZer你好:


不是,surplus optimization只是把surplus 的expected return、standard deviation和correlation作为输入变量。求得的结果可能是60%资产/40%负债,或者其他比例。

随便举个例子,假设我们可投资资产是100万,负债是80万。按照surplus optimization的配置结果是60万股票,40万债券。这种配置比例就不能完全cover负债。按照hedging/return-seeking portfolios的方法则是配80%的负债去完全cover liability,剩下的是20%的股票追求高收益。所以hedging/return-seeking portfolios满足题目的两个要求。

surplus optimization是比较抽象的过程,它在配置过程中确实是同时考虑了assets和liability,但是它配置的结果是不能保证完全cover liability。

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程冠林 · 2022年12月12日

“不是,surplus optimization只是把surplus 的expected return、standard deviation和correlation作为输入变量。求得的结果可能是60%资产/40%负债,或者其他比例。 随便举个例子,假设我们可投资资产是100万,负债是80万。按照surplus optimization的配置结果是60万股票,40万债券。” 这句话的意思是surplus opt的方法,是将surplus分析得出来的allocation结果应用于整个asset上?

Persey · 2023年04月21日

那怎么区分surplus 和an integrated asset–liability approach呢

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