当代财经 ›› 2015, Vol. 0 ›› Issue (03): 595-.

• • 上一篇    

证券化能降低银行风险吗——基于“挤兑模型”的理论分析

刘新宇,葛扬   

  1. (南京大学 商学院,江苏 南京 210093)
  • 收稿日期:2014-09-25 发布日期:2021-01-21
  • 作者简介:刘新宇,南京大学博士研究生,主要从事房地产经济理论研究,联系方式liuxinyu_001@sina.com;葛 扬,南京大学教授,博士生导师,主要从事房地产经济理论及社会主义经济理论研究。

Can Securitization Mitigate Banking Risks ? A Theoretical Analysis Based on the“Run Model”

LIU Xin-yu, GE Yang   

  1. (Nanjing University, Nanjing 210093, China)
  • Received:2014-09-25 Published:2021-01-21

摘要: 由于缺少成熟的证券化市场,我国商业银行无法通过证券化手段转移风险,只能通过传统的线性交换策略转移风险。通过在“挤兑模型”中加入证券化因素,并利用“挤兑边界”分析法将风险大小可视化,可以得到证券化策略能够在绝大多数条件下提供比线性风险规避策略更好的规避效果。在不存在信心冲击的条件下,以银行个体风险最小化为基础的最优选择是交换整个证券化中的高级部分,并使高级部分的偿还额等于存款额;但在存在信心冲击的条件下,这一选择失效,银行风险最优选择策略存在变更。

关键词: 证券化,挤兑模型,线性风险分散,信心冲击

Abstract: As there is no mature securitization market, China’s commercial banks could not transfer risks through the means of securitization, but only through the traditional strategy of linear diversification. By adding some securitization factors to the“run model”and employing the“run edges”analytical method to have risks visualized, such a conclusion can be achieved that securitization can yield better results than linear risk diversification in most cases. When there is no confidence shock, the optimum choice based on minimizing banking risks is to exchange the senior tranche totally and to render the repayment of senior tranche equal to the level of deposits. However, this strategy will fail when there does exist a confidence shock; then, the optimal choice to avoid banking risks has to be altered.

Key words: securitization; run model; linear risk diversification; confidence shock