银行间债务网络流动性差异对风险传染的影响
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F830

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国家自然科学基金资助项目(71971034; 71571034; 71731003)


The impacts of interbank debt network liquidity differences on risk contagion
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    摘要:

    在度量系统性风险方面,银行间的流动性差异可能比“规模大”和“联系多”更重要.首先,本文从银行间网络角度,提出了一种商业银行流动性差异的检验方法.本文利用银行间贷款(网络的出度强度)和银行间借款(网络的入度强度)的幂律分布特征,度量银行间的流动性差异.实证研究发现,2012年~2014年,中国的大型商业银行流动性差异很大.其中,2014年大型银行的流动性需求最明显.其次,本文以真实银行间网络数据为基础,构造大型银行分别是流动性需求和流动性供给的两种网络,研究流动性差异对风险传染的影响.实验结果显示,处于流动性需求地位的大型银行的潜在风险传染破坏力,远远高于同等规模和联系的银行.这足以表明流动性地位应该是监管机构重点关注的系统性风险指标.本文的研究为监管机构提供了一种精准的系统性风险压力测试和情景分析方法.

    Abstract:

    Liquidity differences between banks can be more significant than both“large scales”and“multiple connections”in measuring systemic risk. Firstly,an approach for testing liquidity differences between commercial banks is proposed from the perspective of interbank networks. The power law distributions of lending (outflow intensity of network) and borrowing (inflow intensity of network) between banks are used for measuring interbank liquidity differences. Empirical results indicate that there were huge liquidity differences among large commercial banks in China between 2012 and 2014. In particular,demands for liquidity of large banks appeared to be most significant in 2014. Secondly,two networks,where the large banks are liquidity-demand and liquidity-supply types respectively,are constructed to examine the influence of liquidity differences on risk contagion. Experiment results indicate that,large banks demanding for liquidity can be much more destructive than banks with similar scales and connections in view of risk contagion. This demonstrates that the liquidity position should be the main criterion for detecting systemic risk by regulators. This paper provides an accurate pressure testing and scenario analysis framework for systemic risk.

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隋聪,王宪峰,王宗尧.银行间债务网络流动性差异对风险传染的影响[J].管理科学学报,2020,23(3):65~72

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  • 在线发布日期: 2021-10-25
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