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Rethinking financial stability: Challenges arising from financial networks’ modular scale-free architecture

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  • León, Carlos
  • Berndsen, Ron J.

Abstract

We examine the connective architecture of the main Colombian payment and settlement systems in order to update what we know about local financial networks, and to elaborate on the main consequences for financial stability. Evidence suggests that local financial networks display a modular (i.e. clustered) scale-free (i.e. inhomogeneous) architecture. Results concur with other real-world networks, and propose new insights and challenges for authorities contributing to financial stability. For instance, (i) traditional reductionist assumptions for modeling financial systems (e.g. homogeneity) may be particularly misleading; (ii) the observed modular scale-free architecture favors robustness and resilience; (iii) the generating process of such architecture overlaps with literature on trading relationships; (iv) carelessly reducing inhomogeneity in financial systems may backfire in the form of a less robust and less resilient financial system; and (v) financial authorities should understand and take advantage of the existing architecture by means of designing and implementing macro-prudential regulation and system-calibrated requirements.

Suggested Citation

  • León, Carlos & Berndsen, Ron J., 2014. "Rethinking financial stability: Challenges arising from financial networks’ modular scale-free architecture," Journal of Financial Stability, Elsevier, vol. 15(C), pages 241-256.
  • Handle: RePEc:eee:finsta:v:15:y:2014:i:c:p:241-256
    DOI: 10.1016/j.jfs.2014.10.006
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    1. repec:tiu:tiucen:bd09917e-4277-418c-8d8e-5bd5b8439fd3 is not listed on IDEAS
    2. Carlos León & Jorge Cely & Carlos Cadena, 2016. "Identifying Interbank Loans, Rates, and Claims Networks from Transactional Data," Lecturas de Economía, Universidad de Antioquia, Departamento de Economía, issue 85, pages 91-125, Julio - D.
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    5. Carlos León & Jhonatan Pérez & Luc Renneboog, 2014. "A multi-layer network of the sovereign securities market," Borradores de Economia 840, Banco de la Republica de Colombia.
    6. Carlos León & Constanza Martínez-Ventura & Freddy Cepeda-López, 2019. "Short-Term Liquidity Contagion in the Interbank Market," Revista Cuadernos de Economía, Universidad Nacional de Colombia -FCE - CID, vol. 38(76), pages 51-80, January.
    7. Freddy Cepeda-López & Fredy Gamboa-Estrada & Carlos León & Hernán Rincón-Castro, 2019. "The evolution of world trade from 1995 to 2014: A network approach," The Journal of International Trade & Economic Development, Taylor & Francis Journals, vol. 28(4), pages 452-485, May.
    8. Ortega, Fabio & León, Carlos, 2018. "Las transferencias procesadas por ACH Colombia: un análisis desde la perspectiva de topología de redes," Revista Lecturas de Economía, Universidad de Antioquia - CIE, issue 88, pages 109-153, January.
    9. Berndsen, Ron J. & León, Carlos & Renneboog, Luc, 2018. "Financial stability in networks of financial institutions and market infrastructures," Journal of Financial Stability, Elsevier, vol. 35(C), pages 120-135.
    10. Leon Rincon, C.E., 2015. "Financial stability from a network perspective," Other publications TiSEM bb2e4e44-e842-45c6-a946-4, Tilburg University, School of Economics and Management.
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    12. Ricardo Mariño-Martínez & Carlos León & Carlos Cadena-Silva, 2020. "Las entidades de contrapartida central en la mitigación del riesgo de contraparte y de liquidez: El caso de los derivados cambiarios en Colombia," Borradores de Economia 1101, Banco de la Republica de Colombia.
    13. Hüser, Anne-Caroline, 2016. "Too interconnected to fail: A survey of the Interbank Networks literature," SAFE Working Paper Series 91, Leibniz Institute for Financial Research SAFE.
    14. Fabio Ortega & Carlos León, 2017. "Las transferencias compensadas por ACH Colombia: Un análisis desde la perspectiva de topología de redes," Borradores de Economia 990, Banco de la Republica de Colombia.
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    More about this item

    Keywords

    Financial networks; Contagion; Resilience; Robustness; Fragility;

    JEL classification:

    • D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
    • D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets
    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • G01 - Financial Economics - - General - - - Financial Crises
    • L14 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Transactional Relationships; Contracts and Reputation

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