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Network structure analysis of the Brazilian interbank market

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  • Silva, Thiago Christiano
  • de Souza, Sergio Rubens Stancato
  • Tabak, Benjamin Miranda

Abstract

In this paper, we provide a detailed analysis of the roles financial institutions play within the Brazilian interbank market using a network-based approach. We present a novel methodology to assess how compliant networks are to being perfect core-periphery structures. The approach is flexible, allowing for the identification of multiple cores in networks. We verify that the interbank network presents a high disassortative mixing pattern, suggesting preferential attachment of highly connected financial institutions to others with few connections. We use the clustering coefficient to assess the substitutability of financial institutions. We find that large banking institutions are counterparties that are easily substitutable in normal times. We uncover that the rich-club effect is strongly present in the community comprising the large banking institutions, as they normally form near-clique structures. Since they play the role of liquidity providers in the interbank market, this interconnectedness effectively endows the network with robustness, as participants that are with liquidity issues can easily substitute counterparties that are liquidity suppliers. This substitutability will likely vanish during periods of stress, increasing systemic risk and the likelihood of cascade failures.

Suggested Citation

  • Silva, Thiago Christiano & de Souza, Sergio Rubens Stancato & Tabak, Benjamin Miranda, 2016. "Network structure analysis of the Brazilian interbank market," Emerging Markets Review, Elsevier, vol. 26(C), pages 130-152.
  • Handle: RePEc:eee:ememar:v:26:y:2016:i:c:p:130-152
    DOI: 10.1016/j.ememar.2015.12.004
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    Citations

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    Cited by:

    1. Thiago Christiano Silva & Marcos Soares da Silva & Benjamin Miranda Tabak, 2015. "Liquidity Performance Evaluation of the Brazilian Interbank Market using a Network-Based Approach," Working Papers Series 401, Central Bank of Brazil, Research Department.
    2. Thiago Christiano Silva & Sergio Rubens Stancato de Souza & Benjamin Miranda Tabak, 2016. "Structure and Dynamics of the Global Financial Network," Working Papers Series 439, Central Bank of Brazil, Research Department.
    3. Fernando Linardi & Cees (C.G.H.) Diks & Marco (M.J.) van der Leij & Iuri Lazier, 2017. "Dynamic Interbank Network Analysis Using Latent Space Models," Tinbergen Institute Discussion Papers 17-101/II, Tinbergen Institute.
    4. Silva, Thiago Christiano & Souza, Sergio Rubens Stancato & Tabak, Benjamin Miranda, 2017. "Monitoring vulnerability and impact diffusion in financial networks," Journal of Economic Dynamics and Control, Elsevier, vol. 76(C), pages 109-135.
    5. Silva, Thiago Christiano & Tabak, Benjamin Miranda & Cajueiro, Daniel Oliveira & Dias, Marina Villas Boas, 2018. "Adequacy of deterministic and parametric frontiers to analyze the efficiency of Indian commercial banks," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 506(C), pages 1016-1025.
    6. repec:eee:finsta:v:38:y:2018:i:c:p:98-118 is not listed on IDEAS
    7. Silva, Thiago Christiano & da Silva, Michel Alexandre & Tabak, Benjamin Miranda, 2017. "Systemic risk in financial systems: A feedback approach," Journal of Economic Behavior & Organization, Elsevier, vol. 144(C), pages 97-120.
    8. Silva, Thiago Christiano & Tabak, Benjamin Miranda & Guerra, Solange Maria, 2017. "Why do vulnerability cycles matter in financial networks?," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 471(C), pages 592-606.
    9. Thiago Christiano Silva & Michel Alexandre da Silva & Benjamin Miranda Tabak, 2016. "Modeling Financial Networks: a feedback approach," Working Papers Series 438, Central Bank of Brazil, Research Department.
    10. Thiago Christiano Silva & Solange Maria Guerra & Benjamin Miranda Tabak, 2019. "Fiscal Risk and Financial Fragility," Working Papers Series 495, Central Bank of Brazil, Research Department.
    11. Sadamori Kojaku & Giulio Cimini & Guido Caldarelli & Naoki Masuda, 2018. "Structural changes in the interbank market across the financial crisis from multiple core-periphery analysis," Papers 1802.05139, arXiv.org.
    12. Silva, Thiago Christiano & Guerra, Solange Maria & Tabak, Benjamin Miranda & de Castro Miranda, Rodrigo Cesar, 2016. "Financial networks, bank efficiency and risk-taking," Journal of Financial Stability, Elsevier, vol. 25(C), pages 247-257.
    13. repec:eee:ememar:v:35:y:2018:i:c:p:164-189 is not listed on IDEAS
    14. José Carreño & Rodrigo Cifuentes, 2017. "Identifying Complex Core-Periphery Structures in the Interbank Market," Working Papers Central Bank of Chile 813, Central Bank of Chile.
    15. Silva, Thiago Christiano & Tabak, Benjamin Miranda & Cajueiro, Daniel Oliveira & Dias, Marina Villas Boas, 2017. "A comparison of DEA and SFA using micro- and macro-level perspectives: Efficiency of Chinese local banks," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 469(C), pages 216-223.
    16. Thiago Christiano Silva & Solange Maria Guerra & Michel Alexandre da Silva & Benjamin Miranda Tabak, 2018. "Interconnectedness, Firm Resilience and Monetary Policy," Working Papers Series 478, Central Bank of Brazil, Research Department.
    17. Silva, Walmir & Kimura, Herbert & Sobreiro, Vinicius Amorim, 2017. "An analysis of the literature on systemic financial risk: A survey," Journal of Financial Stability, Elsevier, vol. 28(C), pages 91-114.

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