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考拉 · 2024年01月20日

关于选项解析,很有疑惑,alpha? value style?

* 问题详情,请 查看题干

NO.PZ202207040100000406

问题如下:

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:

B is correct. 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%).

A is incorrect. Alpha is defined here to include performance unexplained by the factors and matches that of the benchmark.【alpha一般不是指porfolio return 超出benchmark 的部分么?原来的表述没有错,怎么理解这里的解析?】

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%).【这里对比的数据都是用russle benchmark 那栏数据,和market那栏数据,没有用value fund, 这里怎么理解呢?】

1 个答案

笛子_品职助教 · 2024年01月23日

嗨,努力学习的PZer你好:


alpha一般不是指porfolio return 超出benchmark 的部分么?原来的表述没有错,怎么理解这里的解析?

Hello,亲爱的同学~

在以前,因为无法解释portfolio的风险因子来源,因此把alpha定义为portfolio超过benchmark的部分。

但是最近,量化投资发展了,人们可以把portfolio的收益,解释成各个风险因子。

因此随着量化的发展,对alpha的定义也在与时俱进。

现在的alpha定义为:portfolio与各个风险因子,回归方程里的截距项。不再认为是portfolio与benchmark的收益差距。

同学记忆一下,最近equity 三级课程里,对ALPHA 的定义。


这里对比的数据都是用russle benchmark 那栏数据,和market那栏数据,没有用value fund, 这里怎么理解呢?

同学这里看得非常仔细。

这道题目和答案都没有问题,但是这里C的解析不够准确。

这里的解析应该对比MFC value fund,而不是Russell benchmark。

因为题干问的是:Which of Shaw’s comments about the MFC Value Fund in Exhibit 1 is most accurate? The comment concerning:

这是一道协会的题目,我们看协会后续是否对解析进行勘误。




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