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七七 · 2024年07月24日

关于alpha的解析

NO.PZ2023010903000058

问题如下:

On viewing Exhibit 1, Shaw makes the following comments about the MFC Value Fund:

l The small-cap tilt helped.

l Value funds were out of favor, as shown by the Value factor results.

l Of course, the MFC Value Fund must have a lower alpha because its performance was 0.03 percentage point worse than its benchmark.

Which of Shaw’s comments about the MFC Value Fund in Exhibit 1 is most accurate? The comment concerning:

选项:

A.

alpha

B.

small-cap tilt

C.

value being out of favor

解释:

Shaw’s comment about a small-cap tilt is correct. Additional exposure to smaller firms resulted in a positive performance of 0.02% for the Size factor.

A is incorrect. Alpha is defined here to include performance unexplained by the factors and matches that of the benchmark.

C is incorrect. Although the value style does appear to be out of favor as shown by the lower return than that of the market (0.66% versus 0.71%), the Value factor has a positive contribution to the return (0.08%).

1、关于alpha的解析没有看懂,请老师再详细分析一下

2 个答案
已采纳答案

笛子_品职助教 · 2024年07月25日

嗨,从没放弃的小努力你好:


所以后半句说return低0.03个百分点,也即Rp-Rb,这个表示的是portfolio的excess return是-0.03。这个0.03里,包含了factor weighting,alpha和position sizing的共同作用,请问这么理解对吗?

同学理解正确。

后半句是对的。

前半句Lower Alpha错了。

所以综合起来也是incorrect的。

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努力的时光都是限量版,加油!

笛子_品职助教 · 2024年07月25日

嗨,从没放弃的小努力你好:


从表格看出:


这两个基金的Alpha都是-0.05%,Alpha是相等的。


但shaw说:

l Of course, the MFC Value Fund must have a lower alpha because its performance was 0.03 percentage point worse than its benchmark.

这两个基金的Alpha不相等,MFC value fund的Alpha更低。


shaw的说法与表格数据不符。因此shaw的说法不正确。

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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!

七七 · 2024年07月25日

所以后半句说return低0.03个百分点,也即Rp-Rb,这个表示的是portfolio的excess return是-0.03。这个0.03里,包含了factor weighting,alpha和position sizing的共同作用,请问这么理解对吗?

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