Phyllis2020-10-18 06:02:12
请问老师,百题第三题是什么意思?以及B risk is factor exposure具体是如何理解的?(还有就是 风险是敞口?但是请问不管风险种类吗?)
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Cindy2020-10-20 15:09:43
同学你好,这道题问的是下面关于CAPM模型的假设, 哪一个是在真实世界中和在理论中都是有用的
A. Information is costless and available to all investors: technology has reduced information friction to roughly zero
信息对所有投资者来说都是免费的:技术将信息摩擦减少到几乎为零,这个一看就是错的,技术并没有将信息摩擦减少到几乎为零的状态
B. Risk is factor exposure: The risk of an individual asset is measured in terms of the factor exposure of that asset
这个选项的意思就是我们承担的风险大小取决于我们暴露的风险敞口,敞口越大,风险就越大,这句话是对的
C. Investors have mean-variance utility: asset owners care only about means (which they like) and variances (which they dislike)
这是说投资者只关心均值和方差,这个在真实世界中是不成立的,不可能只关心这两个维度的
D. Investors have homogeneous expectations: investors have identical expectations with respect to the necessary inputs into the portfolio decision
投资者具有相同的预期,这个一看也是错的,不同投资者之间不可能具有相同的预期的,
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