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Solvency contagion risk in the Chinese commercial banks’ network

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  • Chen, Yu
  • Jin, Shuyue
  • Wang, Xiasi

Abstract

We study a model for solvency contagion risk in financial networks, which allows the spread of contagion to occur before the point of default. This model can quantify systemic contagion loss through stress testing. In the usual case, only the total liabilities and total assets in such a network can be observed. To overcome this problem, we adopt a Gibbs sampling method to generate samples of the interbank liabilities matrix conditioning on the edges. This methodological approach is applied to a Chinese commercial bank network. Our results show that the systemic contagion losses of this network are highly dependent on the perceived exogenous recovery rate, especially when the external shock is strong. In the stress testing, we also analyze solvency contagion losses due to equity and exposure by decomposing the changes in contagion losses from 2008 to 2018 into several individual parts. We find that the contagion losses of the network exhibit a downward trend, indicating a more robust and stable network.

Suggested Citation

  • Chen, Yu & Jin, Shuyue & Wang, Xiasi, 2021. "Solvency contagion risk in the Chinese commercial banks’ network," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 580(C).
    • Handle: RePEc:eee:phsmap:v:580:y:2021:i:c:s0378437121004015
    DOI: 10.1016/j.physa.2021.126128
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    1. Shi, Qing & Sun, Xiaoqi & Jiang, Yile, 2022. "Concentrated commonalities and systemic risk in China's banking system: A contagion network approach," International Review of Financial Analysis, Elsevier, vol. 83(C).
    2. Shuyue Jin & Lei Song & Lei Shu & Qifeng Gao & Yu Chen, 2024. "Systemic risk in Chinese interbank lending networks: insights from short-term and long-term lending data," Empirical Economics, Springer, vol. 67(6), pages 2539-2564, December.

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