【摘要】 马科维茨(Markowitz)以证券收益率的方差作为投资风险的测度建立了组合证券投资模型,本文基于熵的概念,在研究马科维茨(Markowitz)证券投资组合模型的基础上,分析了该模型用方差度量风险的不足,进而提出一种新的证券投资组合优化模型,并以实例作了说明。更多还原

【Abstract】 Markowitz introduces the variance of marketable security’s revenue rate as the investment risk measure; and constructs portfolio investment model to perform the selection procedure of an optimal portfolio. The limitations of measuring risk with variance are analyzed on the base of Markowitz investment portfolio model. In this paper, the measurement method of risk is put forward with entropy. A new optimization model of portfolio is proposed with an application to a practical example.更多还原