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dognmnm · 2022年05月08日

bottom-up

NO.PZ2019012201000063

问题如下:

Which fund in Exhibit 1 most likely follows a bottom-up approach?

选项:

A.

Fund 1

B.

Fund 2

C.

Fund 3

解释:

Bottom-up managers evaluate the risk and return characteristics of individual securities and build portfolios based on stock-specific forecasts; Fund 3 follows this exact approach. Example views of bottom-up managers include expecting one auto company to outperform another, expecting a pharmaceutical company to outperform an auto company, and expecting a technology company to outperform a pharmaceutical company. Both bottom-up and top-down managers can be either diversified or concentrated in terms of securities.


我看这里也写了这些因子, 怎么b就不对了?

4 个答案

笛子_品职助教 · 2022年05月11日

嗨,努力学习的PZer你好:


B选项的value firms和growth firms可以算两大类sectors吗?因为是sectors的一种就不是单一公司了


可以算两大类,但在名词上注意,成长与价值,一般认为是属于style。sector更多的是表示行业。

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就算太阳没有迎着我们而来,我们正在朝着它而去,加油!

笛子_品职助教 · 2022年05月09日

嗨,爱思考的PZer你好:


但他也没说是基于宏观层面啊? 我也可以说: "题目中的描述能看出,并没有说这个观点形成的原因,是基于宏观层面。既然这个views不是TOP down,这个views就是来自TOP down以外的因素,那么只要bottom up", 有没有感觉也挺合理? 所以我到底怎么看出他的view就是宏观?


是的,突然基金经理摆出了一个观点,然后按照这个观点来配置股票,所有的股票配置,都不是基于股票自身微观特征,而只是为这个观点服务。这里隐含了一个逻辑,股票不是基于自身,而是基于观点,而bottom up 必须基于股票自身,而不能基于其他因素,这就否定掉了bottom up,用排除法就只有Top down。


当然同学的逻辑,追本溯源,也没有错,从逻辑出发,同学的观点也是合理的。因为,确实没有阐述这个观点是怎么来的,那么bottom up 和 top dwon都可以。我就说,仅仅从逻辑上推理,同学的理解也是没有问题的。


我认为两种逻辑,都有合理性,没有对错之分。


只不过在教材这里,采取了我说的逻辑。教材对bottom up 定义比较严格,一定是从股票自身微观特征出发,如果没有明确阐述的话,一般不会认为是bottom up。为了某一个观点而配置股票,是作为top down的。


具体可以原版书黄色部分,对风格有先验的观点,是top down。原版书认为,这可能是基于宏观因素,比如油价上涨,现金跑赢股票,或者基于现金与股票的资产配置。


这个知识点,就用这道题来补充吧。


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加油吧,让我们一起遇见更好的自己!

mino酱是个小破货 · 2022年05月11日

B选项的value firms和growth firms可以算两大类sectors吗?因为是sectors的一种就不是单一公司了

笛子_品职助教 · 2022年05月09日

嗨,爱思考的PZer你好:



做这个组合,并不是从公司微观的基本面出发,而是反应了基金经理的观点(views)。这个观点(views)是已知的,题目中的描述能看出,并没有说这个观点形成的原因,是基于公司微观基本面。既然这个views不是bottom up,这个views就是来自bottom up以外的因素,那么只要TOP down。

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努力的时光都是限量版,加油!

笛子_品职助教 · 2022年05月09日

嗨,努力学习的PZer你好:


这里要注意一下,如果是基金一直是growth风格,通过分析单个公司的特征来投资,属于bottom up。同理,如果基金一直是value风格,通过分析单个公司来投资,也是bottom up。


但是如果这家基金,分析宏观因素,判断出growth 风格要比value 风格强,这属于基金经理的主观观点(view)。这种观点,并不是基于公司的微观特征,而是基于其他方面的分析。就不属于bottom up,而是top down.



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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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