均值-方差-近似偏度投资组合模型和实证分析

被引:53
作者
余婧
机构
[1] 复旦大学管理学院管理科学系
关键词
运筹学; 金融优化; 收益率非对称性; 近似偏度; 实证分析;
D O I
10.15960/j.cnki.issn.1007-6093.2010.01.013
中图分类号
F224 [经济数学方法]; F830.59 [投资];
学科分类号
020104 [西方经济学]; 020219 [财政学(含:税收学)];
摘要
均值-方差投资组合模型作为现代投资组合理论的基础,采用方差作为风险度量,但忽略了投资组合收益的非对称性.而考虑收益非对称性的基于偏度的投资组合模型由于非凸和非二次性使模型难以求解.本文提出用上下半方差的比值近似刻画偏度,建立了均值-方差-近似偏度(MVAS)模型,并利用该模型对中国证券市场主要股票指数进行实证分析.实证分析结果表明,在收益率非正态分布的市场中,考虑了收益率非对称性的投资组合模型较传统的MV和MAD模型具有更优的表现.
引用
收藏
页码:106 / 114
页数:9
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