本文研究了证券市场中包含多个基金和股票时的均值-方差最优投资决策模型,得到了最优投资组合的解析表达形式,以及对应的投资有效前沿,证明了两基金分离问题,由于最优解是不唯一的,进而讨论了最优解集合的结构,并对实例进行计算与分析。
This paper studies the financial market consist of stocks and several mutual funds. The analytic form of optimal portfolio under mean-variance formula is derived. The corresponding efficient frontier is obtained and the two mutual funds separation theorem is also proved. The optimal solution is not unique. The structure of the set of optimal portfolio is discussed.