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Simulating financial contagion dynamics in random interbank networks

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  • John Leventides
  • Kalliopi Loukaki
  • Vassilios G. Papavassiliou

Abstract

The purpose of this study is to assess the resilience of financial systems to exogenous shocks using techniques drawn from the theory of complex networks. We investigate by means of Monte Carlo simulations the fragility of several network topologies using a simple default model of contagion applied on interbank networks of varying sizes. We trigger a series of banking crises by exogenously failing each bank in the system and observe the propagation mechanisms that take effect within the system under different scenarios. Finally, we add to the existing literature by analyzing the interplay of several crucial drivers of interbank contagion, such as network topology, leverage, interconnectedness, heterogeneity and homogeneity across bank sizes and interbank exposures.

Suggested Citation

  • John Leventides & Kalliopi Loukaki & Vassilios G. Papavassiliou, 2019. "Simulating financial contagion dynamics in random interbank networks," Open Access publications 10197/9601, Research Repository, University College Dublin.
    • Handle: RePEc:rru:oapubs:10197/9601
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    Cited by:

    1. Xiao, Shuhua & Zhu, Shushang & Wu, Ying, 2023. "Asset securitization, cross holdings, and systemic risk in banking," Journal of Financial Stability, Elsevier, vol. 67(C).
    2. Morteza Alaeddini & Julie Dugdale & Paul Reaidy & Philippe Madiès & Önder Gürcan, 2021. "An Agent-Oriented, Blockchain-Based Design of the Interbank Money Market Trading System," Post-Print hal-03447648, HAL.
    3. Cao, Yufei & Zou, Yueming, 2025. "How robust are financial connectedness networks? A network attack assessment," Research in International Business and Finance, Elsevier, vol. 76(C).
    4. Wang, Gang-Jin & Wan, Li & Feng, Yusen & Xie, Chi & Uddin, Gazi Salah & Zhu, You, 2023. "Interconnected multilayer networks: Quantifying connectedness among global stock and foreign exchange markets," International Review of Financial Analysis, Elsevier, vol. 86(C).
    5. Siklos, Pierre L. & Stefan, Martin, 2021. "Exchange rate shocks in multicurrency interbank markets," Journal of Financial Stability, Elsevier, vol. 55(C).
    6. Samitas, Aristeidis & Kampouris, Elias & Polyzos, Stathis, 2022. "Covid-19 pandemic and spillover effects in stock markets: A financial network approach," International Review of Financial Analysis, Elsevier, vol. 80(C).
    7. Cao, Jie & Wen, Fenghua & Stanley, H. Eugene & Wang, Xiong, 2021. "Multilayer financial networks and systemic importance: Evidence from China," International Review of Financial Analysis, Elsevier, vol. 78(C).
    8. Lei, Jingyue & Shen, Peilong & Li, Zhinan, 2025. "Multilayer bank-firm networks and financial risk contagion," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 675(C).
    9. Miao Tang & Hong Fan, 2025. "Dynamic Multilayer Network for Systemic Risk and Bank Regulation Based on CDS," Computational Economics, Springer;Society for Computational Economics, vol. 65(2), pages 691-715, February.
    10. Zhao, Hong & Li, Jiayi & Lei, Yiqing & Zhou, Mingming, 2022. "Risk spillover of banking across regions: Evidence from the belt and road countries," Emerging Markets Review, Elsevier, vol. 52(C).
    11. Fuwei Xu, 2024. "Modeling the Paths of China’s Systemic Financial Risk Contagion: A Ripple Network Perspective Analysis," Computational Economics, Springer;Society for Computational Economics, vol. 63(1), pages 47-73, January.
    12. Mikropoulou, Christina D. & Vouldis, Angelos T., 2025. "Financial contagion within the interbank network," Journal of Financial Stability, Elsevier, vol. 81(C).
    13. Jiajia, Liu & Kun, Guo & Fangcheng, Tang & Yahan, Wang & Shouyang, Wang, 2023. "The effect of the disposal of non-performing loans on interbank liquidity risk in China: A cash flow network-based analysis," The Quarterly Review of Economics and Finance, Elsevier, vol. 89(C), pages 105-119.
    14. Morteza Alaeddini & Philippe Madiès & Paul J. Reaidy & Julie Dugdale, 2023. "Interbank money market concerns and actors’ strategies—A systematic review of 21st century literature," Journal of Economic Surveys, Wiley Blackwell, vol. 37(2), pages 573-654, April.
    15. Chen, Naixi & Fan, Hong & Pang, Congyuan, 2024. "Contagion mechanism of liquidity risk in the interbank network," Economic Modelling, Elsevier, vol. 140(C).
    16. Haici Zhang, 2022. "A Deep Learning Approach to Dynamic Interbank Network Link Prediction," IJFS, MDPI, vol. 10(3), pages 1-16, July.

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