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wukefu · 2024年06月22日

讲义上sector and industry roation 说了bottom up 也可以用

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NO.PZ202207040100000503

问题如下:

Which of the analysts’ comments regarding the Lunnar fund’s annual report is the most accurate?

选项:

A.Analyst 1 B.Analyst 2 C.Analyst 3

解释:

Solution

A is correct. The comment made by Analyst 1 is correct regarding style rotation into deep value as motivated by the economic cycle. This is a top-down strategy.

B is incorrect. The comment by Analyst 2 ignores that the use of deep value here is a consequence of style rotation driven by economic analysis, which is top down.

C is incorrect. The comment by Analyst 3 is inaccurate because GARP is a bottom-up strategy.

题目出的感觉很奇怪。。

sector并不代表factors吧,讲义里的sector 更多的是行业的意思,这里为什么把 deep in value 看成是一个sector?

另外sector and industry roation 说了bottom up 也可以用

为什么答案是 不是 bottom up?

2 个答案
已采纳答案

笛子_品职助教 · 2024年06月24日

嗨,从没放弃的小努力你好:


为什么答案是 不是 bottom up?

Hello,亲爱的同学~

这里并没有把deep in value看作是sector。

这里把deep in value看作是style。一种风格。

我们看解析:

The comment made by Analyst 1 is correct regarding style rotation into deep value as motivated by the economic cycle. This is a top-down strategy.


这里我们需要了解一个知识点:

A策略是bottom up策略

B策略是bottom up策略。

portfolio单独使用A策略,属于bottom up策略。

portfolio单独使用B策略,也属于bottom up策略。

但如果portfolio在A策略和B策略之间来回切换,则属于top down策略。

这是因为切换不同的策略,通常需要使用macro factor。

例如,portfolio在价值和成长之间切换,就需要对利率做预测。

预测利率下跌,成长占优。

预测利率上涨,价值占优。


而sector and industry roation 有时候也是bottom up

例如只投资低估值行业,那么有的行业涨上去了,估值高,就卖掉,有的行业跌下来,估值低,就买入。

但这依然只使用了一种因子:value。


结合本题,本题不是在行业间切换,而是在策略之间切换(题目阐述是style)。

因此是top down。


这个点原版书并没有说得特别明确,同学结合这道题记忆一下这个知识点。




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加油吧,让我们一起遇见更好的自己!

笛子_品职助教 · 2024年06月27日

嗨,爱思考的PZer你好:


总结起来以下是对的吗?1. 如果用一种factor/style/sector 就是bottom-up?如果在多种的factor/style/sector 之间轮换,属于top-down?

同学理解正确。

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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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