主管:中国科学院
主办:中国优选法统筹法与经济数学研究会
   中国科学院科技战略咨询研究院

中国管理科学 ›› 2025, Vol. 33 ›› Issue (11): 1-13.doi: 10.16381/j.cnki.issn1003-207x.2021.2663

• •    

多元化经营、业务相似性与银行系统性风险

王超1(), 何建敏2, 刘晓星2   

  1. 1.南京农业大学金融学院,江苏 南京 210095
    2.东南大学经济管理学院,江苏 南京 211189
  • 收稿日期:2021-12-23 修回日期:2022-11-04 出版日期:2025-11-25 发布日期:2025-11-28
  • 通讯作者: 王超 E-mail:wangchaoedu@njau.edu.cn
  • 基金资助:
    国家社科基金后期项目(22FGLB094);教育部人文社会科学一般项目(21YJC790108);南京农业大学中央高校基本科研业务费人文社会科学研究基金项目(SKYC2025013)

Investment Diversification, Business Similarity and Systemic Risk

Chao Wang1(), Jianmin He2, Xiaoxing Liu2   

  1. 1.School of Finance,Nanjing Agricultural University,Nanjing 210095,China
    2.School of Economics and Management,Southeast University,Nanjing 211189,China
  • Received:2021-12-23 Revised:2022-11-04 Online:2025-11-25 Published:2025-11-28
  • Contact: Chao Wang E-mail:wangchaoedu@njau.edu.cn

摘要:

通过银行系统性损失模型度量我国银行市场面临压力测试时的系统性风险状况,探究多元化经营与业务相似性之间的关系,进而以业务相似性作为中介变量分析多元化经营对银行系统性风险的影响,揭示银行系统性风险的传染过程,明确银行系统性风险的形成机制。结果表明大型银行通常能够通过多元化经营降低其业务相似性,对于部分中小银行来说多元化经营对业务相似性的促进作用更加明显,而业务过度相似引起的风险传染是目前影响我国银行市场稳定性的关键因素。尽管业务相似性会促进银行系统性风险传染,但是对于大型国有商业银行来说却具有双重效应,在不发生严重系统性风险的情况下能够通过其稳定性的优势分散其他银行的资产冲击。上述研究结果为我国商业银行的业务转型以及系统性风险防范化解等问题提供了监管参考。

关键词: 多元化经营, 业务相似性, 系统性风险

Abstract:

The relationship between diversification and similarity is explored through the systemic model of banking originated losses to measure systemic risk in the banking of China when facing stress tests. The impact of diversification on the systemic risk is then analyzed using similarity as a mediating variable to reveal the contagion process of systemic risk and clarify the formation mechanism of systemic risk. The results show that large banks are usually able to reduce their business similarity through diversification, and for some small and medium-sized banks the promotion of business similarity by diversification is more obvious. The contagion risks caused by excessive business similarity is currently a key factor affecting the stability of the banking market in China. Although business similarity promotes the contagion of systemic risk, it has a double effect for large state-owned commercial banks, which can disperse shocks from other banks through the advantage of being “too big to fail” without serious systemic risks. The above findings provide regulatory references for the business transformation and systemic risk prevention of commercial banks in China.

Key words: investment diversification, business similarity, systemic risk

中图分类号: