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CAPM Model and Risks of Stock Investment: An Empirical Study on Shanghai Stock Market
Author(s): 
Pages: 27-37
Year: Issue:  6
Journal: WORLD ECONOMIC FORUM

Keyword:  系统风险期望收益投资组合;
Abstract: 本文根据威廉·夏普的资本资产定价模型即CAPM模型的原理,运用时间序列与横截面的最小二乘法的线性回归方法,构造相应的模型,对上海股票市场投资风险进行统计验证分析.通过严谨的统计分析表明,上海股票市场目前的系统风险占总风险比例大幅下降,对于风险--收益关系,非系统风险对投资收益率已经没有显著影响,而系统风险影响却非常显著,投资收益率与系统风险的关系并不符合CAPM模型,即投资收益率与β并不呈现线性关系.
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