文章摘要
余湄,周荣喜,吴孟.投资模型选择问题研究[J].数量经济技术经济研究,2013,30(2):98-110
投资模型选择问题研究
Study on the Model Selection in Portfolio Management
  
DOI:
中文关键词: 风险模型  投资选择  最优资产配置
英文关键词: Risk Model  Portfolio Selection  Optimal Asset Strategy
基金项目:
作者单位
余湄 对外经济贸易大学金融学院应用金融研究中心 
周荣喜 澳大利亚新南威尔士大学金融系 
吴孟 北京化工大学经济管理学院 
中文摘要:
      本文研究五类代表性的投资组合模型:方差,绝对偏差,LPM模型,极大极小模型,以及最大绝对偏差模型,讨论不同的风险度量模型是否真的会造成资产配置的效果不同。区别于传统的从风险与收益的角度进行比较,我们研究5个风险模型得到的最优策略结构,通过权重和重叠的资产数目来探讨不同模型间的相似程度。我们的实证结果发现,不同的风险度量模型会对投资组合的构成造成非常显著的影响。这些结果对投资者或者基金经理进行投资实践具有非常重要的意义,因为传统的看法普遍认为模型的选择取决于投资者对风险的态度而不是从模型本身的理论或者实践价值来选择模型。
英文摘要:
      In this paper, we study fiveimportant risk models in portfolio management. These fivemodels are mean-variance model,mean absolute deviation model, LPM model, minimax model, and maximum absolute deviation model. Compared with current study which focuses on the tradeoff of return and risk in the portfolio, we try to study the strategy proposed by these five models. We compare that how many assets and how much weight are the same in the optimal strategy. Our result shows that, different risk measure leads to different optimal strategy. This is very important for the investors and funding managers who always think that the risk attitude of the customers is most important in the portfolio management. We suggest that the investors and funding managers should pay more attention to the models’ property.
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