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基于参数估计风险的拟合有效证券组合方法

Fitted Efficient Portfolio under Parameters Estimation Risk
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摘要 研究了当投资者在某个证券子集上存在一定约束时,其构建的证券组合在证券全集上的有效性问题。将参数估计风险融入到投资组合决策过程,提出了拟合有效证券组合的概念,并且得到了拟合有效证券组合的判定条件及统计检验方法,最后,结合我国股票市场数据,进行了一些实证研究。研究结果表明,当在某个证券子集上增加投资约束时,虽然原来的证券组合未必有效,但通过选择合适的证券集划分仍然可以实现其拟合有效性,并且可以得到基本相同的样本外业绩表现。 In this paper,we study the efficiency problem of portfolio in whole stock set when some investment constraints are added to some stock subsets.Considering the parameter estimation risk in portfolio optimization,we propose a new concept of efficient fitted portfolio and derive its determination condition and some test statistics.Finally,empirical results show that the optimal portfolio is not necessarily effective when adding some budget constraints,but can be fitted effectly by choosing appropriate partition of stock set.
出处 《系统工程》 CSSCI CSCD 北大核心 2015年第4期18-23,共6页 Systems Engineering
基金 国家自然科学基金资助项目(71101095) 广东省自然科学基金资助项目(2008276) 深圳市科技研发资金国家和省计划配套项目(GJHS20120621142551822)
关键词 拟合有效证券组合 投资约束 估计风险 大规模投资组合 Fitted Efficient Portfolio Investment Constraint Estimation Risk Large-scale Portfolio
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参考文献19

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