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中国管理科学 ›› 2023, Vol. 31 ›› Issue (12): 272-280.doi: 10.16381/j.cnki.issn1003-207x.2022.2759

• • 上一篇    

基于变系数多因子半参数分布的高维动态高阶矩投资组合研究

黄光麟1,鲁万波2()   

  1. 1.西南财经大学统计学院, 四川 成都 611130
    2.西南财经大学管理科学与工程学院, 四川 成都 611130
  • 收稿日期:2022-07-09 修回日期:2023-02-26 出版日期:2023-12-15 发布日期:2024-01-06
  • 通讯作者: 鲁万波 E-mail:luwb@swufe.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(71771187);中央高校基本科研基金资助项目(JBK190602)

High Dimensional Dynamic Higher-order Portfolio Selection Based on the Varying-coefficient Multi-factor Semi-nonparametric Distribution Model

Guang-lin HUANG1,Wan-bo LU2()   

  1. 1.School of Statistics, Southwestern University of Finance and Economics, Chengdu 611130, China
    2.School of Management Science and Engineering, Southwestern University of Finance and Economics, Chengdu 611130, China
  • Received:2022-07-09 Revised:2023-02-26 Online:2023-12-15 Published:2024-01-06
  • Contact: Wan-bo LU E-mail:luwb@swufe.edu.cn

摘要:

高维动态高阶矩投资组合的应用目前面临着“维数灾难”与“模型误设”两大难题。本文结合变系数多因子模型与时变半参数分布提出了一种基于半参数因子模型的动态协高阶矩建模方法,给出了模型设定、模型估计和模型检验方法。通过多因子模型有效缓解了动态协高阶矩估计存在的“维数灾难”问题,同时引入时变半参数结构有效解决了“模型误设”问题。实证结果表明:相较于现有的投资组合模型,基于半参数因子模型的动态高阶矩投资组合能够产生更高且更稳定的经济价值,同时更加契合金融资产收益率的时变特征,能够有效为金融市场参与者提供风险管理技术和科学决策依据。

关键词: 多因子模型, 半参数结构, 时变协高阶矩建模, 动态投资组合

Abstract:

Markowitz's mean-variance portfolio model pioneered modern portfolio theory. However, due to the financial assets being non-normal and time-varying distributed, the efficiency of the mean-variance portfolios is difficult to achieve, which makes investors face serious welfare losses. High dimensional dynamic higher-order portfolio can effectively solve the existing drawbacks of the classical mean-variance portfolios; however, its application also meets several difficulties.A time-varying higher-order co-moment estimate, labeled as VC-MF-TVSNP, is proposed by combining a varying-coefficient multi-factor model and a time-varying semi-nonparametric (TVSNP) model. The model specification, estimation, and selection approaches are given in this paper. The multi-factor model can efficiently reduce the “curse of dimensionality” problem in the time-varying higher-order co-moments estimation, and the semi-parametric structure can efficiently solve the “model misspecification” problem. Then a high-dimensional dynamic high-order moment investment analysis is given based on the component stocks of the Chinese CSI 300 index.The empirical studies show that the VC-MF-TVSNP model can effectively capture the time-varying structure of higher-order co-moments of asset returns, and it is more suitable for the latent structure of asset returns. High-dimensional dynamic portfolio based on the VC-MF-TVSNP model can generate higher and more stable economic value, which is further confirmed by robust analysis.To a large extent, the VC-MF-TVSNP model solves the “curse of dimensionality” and the “model misspecification” problem efficiently, which can provide a more precise estimation of high dimensional time-varying higher-order co-moment estimation rather than the existing approaches, and give investors a better reference for asset allocation.

Key words: multi-factor model, semi-nonparametric distribution, time-varying higher-order co-moments modeling, dynamic portfolio

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