投资组合风险的分散化研究

Research on the Diversification of Portfolio Risk

风险是金融投资领域的研究热点问题之下一,投资组合是降低投资风险的有效方法之一。人们在做出投资决策时总是追求在一定收益率下风险最小。本文论述了投资组合收益和风险的数学统计方法,阐明风险可分为系统风险和非系统风险,后者可以通过投资组合分散化。本文还探讨了证券相关性和组合风险之间的关系。最后作了实证分析。

Risk is the important content in finance and investment. Portfolio is one of the efficient methods to reduce investment risks. In this paper, statistical method of return and risk is discussed. Risks are divided into systematic and nonsystematic risk. The latter can be diversified through portfolio. The relation between securities correlation and portfolio risk is discussed as well. Finally, the empirical analysis is presented.