大理大学学报 ›› 2022, Vol. 7 ›› Issue (12): 65-70.

• 管理学 • 上一篇    下一篇

疫情冲击下中国股市投资策略构建  ———基于复杂网络视角

  

  1. (安徽财经大学金融学院,安徽蚌埠 233030

  • 收稿日期:2022-05-10 出版日期:2022-12-15 发布日期:2022-12-15
  • 作者简介:洪振木,副教授,博士,主要从事金融网络、组合网络理论和代数图论研究。
  • 基金资助:

    安徽省自然科学基金项目(2108085MA01);安徽财经大学校级重点项目(ACKYB21019);安徽财经大学研究生科研项目(ACYC2020142

Construction of Investment Strategy in Chinese Stock Market under the Impact of the Pandemic

Based on the Perspective of Complex Network

  1. College of Finance Anhui University of Finance and Economics Bengbu Anhui 233030China

  • Received:2022-05-10 Online:2022-12-15 Published:2022-12-15

摘要: 新型冠状病毒肺炎疫情给中国股票市场带来了负面冲击。选取沪深300成分股为观测样本,从复杂网络的视角分析疫情冲击下中国股市的波动情况。基于股票相关系数向量的欧式距离和股票关联网络的社团划分提出一种投资策略,通过对比实验分析该策略的有效性。研究发现,新冠疫情的影响在股市中传播存在时滞。从欧氏距离较小的股票组合中选择处于不同社团的股票构建投资组合能够有效分散风险。在该投资策略指导下所做的投资组合在未来一年中能够获得较好的投资效果,为投资者的投资管理提供参考。

关键词:

新冠疫情, 复杂网络, 欧氏距离, 投资组合

Abstract: The COVID-19 has brought a negative impact on China's stock market. Taking 300 constituent stocks of Shanghai and Shenzhen as observation samples, this paper analyzes the volatility of China's stock market under the impact of the pandemic from the perspective of complex network. Based on the Euclidean distance of stock correlation coefficient vector and the community division of stock correlation network, an investment strategy is proposed. The effectiveness of the strategy is analyzed through comparative experiments. It is found that there is a time lag in the transmission of the impact of COVID-19 in the stock market. Choosing stocks in different communities from stocks with small Euclidean distance can effectively spread the risk. The investment portfolio made under the guidance of this investment strategy will achieve better investment results in the next year, providing a reference for investors' investment management.

Key words: COVID-19, complex network, Euclidean distance, investment portfolio

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