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罗小胖 · 2023年10月01日

为什么,没懂

NO.PZ2023091901000039

问题如下:

Assuming a positive market risk premium and holding all other things equal, which of the following statements about the CAPM is correct?

选项:

A.

The expected return on a security decreases when its correlation with the market return decreases

B.

For a security with a beta greater than 1.0, an increase in the risk-free rate will increase its expected return.

C.

A stock with a beta of 2.0 will always have a higher standard deviation than a stock with a beta of 0.5

D.

The expected return on a security will increase when the standard deviation of the market return increases

解释:

为什么,没懂

1 个答案

品职答疑小助手雍 · 2023年10月01日

同学你好,这个没懂证明你没有理解CAPM这个模型的含义。

期望收益率= rf+ beta*(rm-rf)

题目说positive market risk premium,也就是rm-rf大于0。

由于rf是确定的,那只要beta越大,期望收益率就越大了。

beta是资产和市场回归的结果,相关性越高beta就越大。反之,相关性越小,beta越小,期望收益率也越小。