备考CFA中这道题如何做?其中包含了威廉夏普的理论?

CFA备考中一方面是掌握CFA词汇和基础知识,另一方面是日常的做题,那在备考中这道题如何做?其中包含了威廉夏普的理论?

CFA备考

A line that represents the possible portfolios that combine a

nsky asset and a risk free asset is most accurately described as a:

A. characteristic line.

B. capital allocation line.

C. capital market line.

Answer:B

The line that represents possible combinations of a risky asset and the risk-free asset is referred to as a capital allocation line (CAL). The capital market line (CML) represents possible combinations of the market portfolio with the risk-free asset. A characteristic line is the best fitting linear relationship between excess returns on an asset and excess returns on the market and is used to estimate an asset's beta.

对于我们来说,一旦出现了无风险收益,那一定是威廉夏普的理论,我们马上就能联想到CML和CAL。

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但是CML是假设世界上每一个人都是同质的,他们有相同的有效前沿,因此有效前沿与无风险收益的切线也只有一条,那个切点就是市场组合。题目里说只有一个风险资产,明显不是市场组合,就从我们沪深300指数,也是要300个股票组成起来的 。所以可以很明确的判断是CAL。

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