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考拉 · 2024年01月11日

请老师解析一下

NO.PZ2023010407000035

问题如下:

In order to explain the new strategic asset allocation to the investment committee, Kroll asks Park why a risk factor-based approach should be used rather than a mean– variance-optimization technique. Park makes the following statements:

Statement 3 Risk factor-based approaches to asset allocation produce more robust asset allocation proposals.

Statement 4 A mean–variance optimization typically overallocates to the private alternative asset classes due to stale pricing.

Which of Park’s statements regarding the asset allocation approaches is correct?

选项:

A.

Only Statement 3

B.

Only Statement 4

C.

Both Statement 3 and Statement 4

解释:

C is correct. Statement 3 is correct because risk factor-based approaches to asset allocation can be applied to develop more robust asset allocations. Statement 4 is correct because a mean–variance optimization typically overallocates to the private alternative asset classes, partly because of underestimated risk due to stale pricing and the assumption that returns are normally distributed.

 Statement 3 is correct because risk factor-based approaches to asset allocation can be applied to develop more robust asset allocations. 【Q1 怎么理解robust? 】


Statement 4 is correct because a mean–variance optimization typically overallocates to the private alternative asset classes, partly because of underestimated risk due to stale pricing and the assumption that returns are normally distributed.【Q2 为什么会overallocate to assets with stale pricing ?】

1 个答案
已采纳答案

伯恩_品职助教 · 2024年01月11日

嗨,从没放弃的小努力你好:


”更加灵活的资产配置或者更加健康的资产配置,更加能贴近本质。Robust本身就是健康的意思。risk factor-based approach为什么能配置的资产更加健康呢,举个例子,如果想mock创业板指数,其中指数的股票里有些流动性很差,买不到,而且就算买到了,以后不想要了,再卖掉也很会很难。这样这个资产相对不是那么的“完美”对吧,但是我又想mock创业板指数。怎么办呢?risk factor-based approach就派上用场了。做一个类似这些很难买到的指数里的个股的risk factor 。(例如这个买不到指数里的个股是小股票c,受小市值因子影响很大,就做多一个小市值股票同时做空一个大市值的股票,模拟出c股票的类似走势,即使没有买c股票,但是想要的结果达到了,用的risk factor approach模拟的结果涨跌和c股票都差不多)这样下来整体能mock创业板指数,而且持有的资产剔除了创业板指数中的流动性差的风险,是不是更加健康了呢。



主要是因为stale pricing没有真实的反应实际的波动率,也就低估了风险,这样低估风险后就会得出这个资产风险收益比高,那就回去过多的分配到资金到这里

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

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