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Networks and systemic risk in the financial system

Author

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  • Prasanna Gai
  • Sujit Kapadia

Abstract

The complex web of exposures and interlinkages across the financial system highlights the relevance of network analysis in understanding systemic risk and guiding the design of financial regulation. This paper discusses how network models—and those based on epidemiological approaches in particular—offer a compelling description of the structure of real-world financial systems and shed light on different contagion mechanisms seen during the global financial crisis. We also review how these insights may inform macroprudential risk assessment and policy in the areas of stress-testing the financial system and the regulation of systemically important institutions. The role of non-bank financial intermediation and social networks in shaping financial system risk is also briefly considered.

Suggested Citation

  • Prasanna Gai & Sujit Kapadia, 2019. "Networks and systemic risk in the financial system," Oxford Review of Economic Policy, Oxford University Press and Oxford Review of Economic Policy Limited, vol. 35(4), pages 586-613.
    • Handle: RePEc:oup:oxford:v:35:y:2019:i:4:p:586-613.
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    File URL: http://hdl.handle.net/10.1093/oxrep/grz023
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    Citations

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    Cited by:

    1. Alessandro Ferracci & Giulio Cimini, 2021. "Systemic risk in interbank networks: disentangling balance sheets and network effects," Papers 2109.14360, arXiv.org, revised Sep 2022.
    2. Chien-Hsiang Yeh, 2022. "Uniqueness of Equilibria in Interactive Networks," Papers 2206.00158, arXiv.org.
    3. Mohamed Belhaj & Renaud Bourlès & Frédéric Deroïan, 2020. "Prudential Regulation in Financial Networks," Working Papers halshs-02950881, HAL.
    4. Wang, Ze & Gao, Xiangyun & Huang, Shupei & Sun, Qingru & Chen, Zhihua & Tang, Renwu & Di, Zengru, 2022. "Measuring systemic risk contribution of global stock markets: A dynamic tail risk network approach," International Review of Financial Analysis, Elsevier, vol. 84(C).
    5. Le, Richard & Ku, Hyejin, 2022. "Reducing systemic risk in a multi-layer network using reinforcement learning," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 605(C).
    6. Ahmad, Wasim & Tiwari, Shiv Ratan & Wadhwani, Akshay & Khan, Mohammad Azeem & Bekiros, Stelios, 2023. "Financial networks and systemic risk vulnerabilities: A tale of Indian banks," Research in International Business and Finance, Elsevier, vol. 65(C).
    7. Barnett, William A. & Wang, Xue & Xu, Hai-Chuan & Zhou, Wei-Xing, 2022. "Hierarchical contagions in the interdependent financial network," Journal of Financial Stability, Elsevier, vol. 61(C).
    8. Ricciardi, Gianmarco & Montagna, Guido & Caldarelli, Guido & Cimini, Giulio, 2023. "Dimensional reduction of solvency contagion dynamics on financial networks," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 630(C).
    9. David Aikman & Daniel Beale & Adam Brinley-Codd & Anne-Caroline Hüser & Giovanni Covi & Caterina Lepore, 2023. "Macro-Prudential Stress Test Models: A Survey," IMF Working Papers 2023/173, International Monetary Fund.
    10. Guo, Hongfeng & Zhao, Xinyao & Yu, Hang & Zhang, Xin, 2021. "Analysis of global stock markets’ connections with emphasis on the impact of COVID-19," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 569(C).
    11. Deborah Noguera & Gabriel Montes-Rojas, 2023. "Minskyan model with credit rationing in a network economy," SN Business & Economics, Springer, vol. 3(3), pages 1-26, March.
    12. Hongjie Pan & Hong Fan, 2024. "Systemic Risk Arising from Shadow Banking and Sustainable Development: A Study of Wealth Management Products in China," Sustainability, MDPI, vol. 16(10), pages 1-26, May.
    13. Deborah Noguera & Gabriel Montes-Rojas, 2022. "Credit-constrained fluctuations and uncertainty in a network economy," Ensayos Económicos, Central Bank of Argentina, Economic Research Department, vol. 1(80), pages 5-52, November.

    More about this item

    Keywords

    D85; E58; G01; G17; G21; G28;
    All these keywords.

    JEL classification:

    • D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies
    • G01 - Financial Economics - - General - - - Financial Crises
    • G17 - Financial Economics - - General Financial Markets - - - Financial Forecasting and Simulation
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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