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Liquidity, Interbank Network Topology and Bank Capital

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  • Aref Mahdavi Ardekani

    (UP1 - Université Paris 1 Panthéon-Sorbonne, CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique, UNILIM - Université de Limoges)

Abstract

By applying the interbank network simulation, this paper examines whether the causal relationship between capital and liquidity is influenced by bank positions in the interbank network. While existing literature highlights the causal relationship that moves from liquidity to capital, the question of how interbank network characteristics affect this relationship remains unclear. Using a sample of commercial banks from 28 European countries, this paper suggests that banks' interconnectedness within interbank loan and deposit networks affects their decisions to set higher or lower regulatory capital rations when facing higher illiquidity. This study provides support for the need to implement minimum liquidity ratios to complement capital ratios, as stressed by the Basel Committee on Banking Regulation and Supervision. This paper also highlights the need for regulatory authorities to consider the network characteristics of banks.

Suggested Citation

  • Aref Mahdavi Ardekani, 2020. "Liquidity, Interbank Network Topology and Bank Capital," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-02967226, HAL.
    • Handle: RePEc:hal:cesptp:halshs-02967226
    Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-02967226v2
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    References listed on IDEAS

    as
    1. Christian Merkl & Stephanie Stolz, 2009. "Banks' regulatory buffers, liquidity networks and monetary policy transmission," Applied Economics, Taylor & Francis Journals, vol. 41(16), pages 2013-2024.
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    More about this item

    Keywords

    Interbank network topology; Bank regulatory capital; Liquidity risk; Basel III;
    All these keywords.

    JEL classification:

    • 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
    • L14 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Transactional Relationships; Contracts and Reputation

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