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[学习疑问] mock afternoon 120请帮我解答一下

compared to the traditional capital asset pricing model(CAPM),where lending and borrowing are carried out at the risk-free rate, a zero beta CAPM would most likely result in a security market line(SML) with:

 

A unchanged intercept and slope

B a higher intercept and flatter slope

C a lower intercept and steeper slope

 

这道题的解释说: compared to the traditional CAPM, where lending and borrowing take place at the riskfree rate, a zero beta CAPM will result in a SML that has a higher intercept and a flatter slope.

 

如果谁能画个图上传一下就更好了,这道题十分不理解。请用中文,用简单的思维方式,帮我解答一下好吗?

zero beta capm.jpg

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我还是觉得有点不太对  这道题我也不太确定  大牛们有兴趣讨论下哈

 

我的图好像画得不太对 那个 纵轴应当是 r-rf  所以 zero beta 就变成横轴了  很奇怪  也帮帮我看看怎么解这个题吧

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老兄啊

那图画的不对啊。SML和纵轴的截距应该是大于零的,截距是risk free rate啊。因为risk free 的beta是0,没有系统风险。

 

zero beta 也没有系统风险,因此Beta为零,但是由于zero beta 有非系统风险,因此,基于zero beta 而言,market risk premium就要小,而sml线的斜率就是market risk premium,既然market risk premium小,斜率就小,截距就大。供参考

 

 

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还有个问题,这个zero-beta线和原先的risk-free线的交点是不是在E(market),beta(market)这点上呢?

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我觉得这两个线的交点位置没有什么具体含义,从数学上说,就是两条直线的交点,

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