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Bank stability in the uncollateralised overnight interbank market: A topological analysis

Author

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  • Bai, Ye
  • Weiss, Pia
  • Murinde, Victor
  • Green, Christopher J.

Abstract

We study the topology characteristics of the Kenyan overnight interbank market and their impacts on bank stability. Our intraday transaction dataset covers 2003 to 2012, including six major liquidity shocks. We uncover new results that the Kenyan interbank network is an incomplete network with higher interconnectedness and exposure during liquidity shocks, such that the shocks tend to spread quickly throughout the network. The main implication of our finding is that in such tiered networks, core banks could pose risks to the whole system. Consistently, our further empirical results suggest that the high interbank network interconnectedness can smoothen liquidity flow during quiet times, but may lead to over-exposure to borrowing banks directly or indirectly, especially during disturbances.

Suggested Citation

  • Bai, Ye & Weiss, Pia & Murinde, Victor & Green, Christopher J., 2023. "Bank stability in the uncollateralised overnight interbank market: A topological analysis," International Review of Economics & Finance, Elsevier, vol. 88(C), pages 1223-1246.
    • Handle: RePEc:eee:reveco:v:88:y:2023:i:c:p:1223-1246
    DOI: 10.1016/j.iref.2023.07.063
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    Keywords

    Interbank market; Network topology; Liquidity shocks; Bank stability; Kenya;
    All these keywords.

    JEL classification:

    • G01 - Financial Economics - - General - - - Financial Crises
    • 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
    • N27 - Economic History - - Financial Markets and Institutions - - - Africa; Oceania

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