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A Network model of systemic risk: identifying the sources of dependence across institutions

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  • Carlos Castro

    ()

  • Juan Sebastian Ordoñez

    ()

Abstract

Abstract: We design a financial network model that explicitly incorporates linkages across institutions through a direct contagion channel, as well as an indirect common exposure channel. In particular, common exposure is setup so as to link the fi nancial to the real sector. The model is calibrated to balance sheet data on the colombian fi nancial sector. Results indicate that commercial banks are the most systemically important financial institutions in the system. Whereas government owned institutions are the most vulnerable institutions in the system.

Suggested Citation

  • Carlos Castro & Juan Sebastian Ordoñez, 2012. "A Network model of systemic risk: identifying the sources of dependence across institutions," DOCUMENTOS DE TRABAJO 009651, UNIVERSIDAD DEL ROSARIO.
  • Handle: RePEc:col:000092:009651
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    File URL: http://repository.urosario.edu.co/bitstream/handle/10336/11284/9651.pdf
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    References listed on IDEAS

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    1. Edson Bastos e Santos & Rama Cont, 2010. "The Brazilian Interbank Network Structure and Systemic Risk," Working Papers Series 219, Central Bank of Brazil, Research Department.
    2. Carlos Léon & Clara Machado & Freddy Cepeda & Miguel Sarmiento, 2011. "Too-connected-to-fail Institutions and Payments System’s Stability: Assessing Challenges for Financial Authorities," Borradores de Economia 644, Banco de la Republica de Colombia.
    3. Marco A. Espinosa-Vega & Juan Solé, 2011. "Cross-border financial surveillance: a network perspective," Journal of Financial Economic Policy, Emerald Group Publishing, vol. 3(3), pages 182-205, August.
    4. Galbiati, Marco & Soramäki, Kimmo, 2011. "An agent-based model of payment systems," Journal of Economic Dynamics and Control, Elsevier, vol. 35(6), pages 859-875, June.
    5. Clara Machado & Carlos León & Miguel Sarmiento & Freddy Cepeda & Orlando Chipatecua & Jorge Cely, 2011. "Riesgo Sistémico Y Estabilidad Del Sistema De Pagos De Alto Valor En Colombia: Análisis Bajo," Ensayos sobre Política Económica, Banco de la Republica de Colombia, vol. 29(65), pages 106-175, Junio.
    6. Nier, Erlend & Yang, Jing & Yorulmazer, Tanju & Alentorn, Amadeo, 2007. "Network models and financial stability," Journal of Economic Dynamics and Control, Elsevier, vol. 31(6), pages 2033-2060, June.
    7. Jorge A Chan-Lau, 2010. "Regulatory Capital Charges for Too-Connected-to-Fail Institutions; A Practical Proposal," IMF Working Papers 10/98, International Monetary Fund.
    8. Becher, Christopher & Millard, Stephen & SoramÃÂäki, Kimmo, 2008. "The network topology of CHAPS Sterling," Bank of England working papers 355, Bank of England.
    9. Jorge A Chan-Lau, 2010. "Balance Sheet Network Analysis of Too-Connected-to-Fail Risk in Global and Domestic Banking Systems," IMF Working Papers 10/107, International Monetary Fund.
    10. Dairo Estrada & Paola Morales Acevedo, "undated". "La estructura del mercado interbancario y del riesgo de contagio en Colombia," Temas de Estabilidad Financiera 030, Banco de la Republica de Colombia.
    11. Cajueiro, Daniel O. & Tabak, Benjamin M., 2008. "The role of banks in the Brazilian interbank market: Does bank type matter?," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 387(27), pages 6825-6836.
    12. Castrén, Olli & Kavonius, Ilja Kristian, 2009. "Balance Sheet Interlinkages and Macro-Financial Risk Analysis in the Euro Area," Working Paper Series 1124, European Central Bank.
    13. Helmut Elsinger & Alfred Lehar & Martin Summer, 2006. "Using Market Information for Banking System Risk Assessment," International Journal of Central Banking, International Journal of Central Banking, vol. 2(1), March.
    14. Michael Boss & Helmut Elsinger & Martin Summer & Stefan Thurner, 2004. "Network topology of the interbank market," Quantitative Finance, Taylor & Francis Journals, vol. 4(6), pages 677-684.
    15. Hans Degryse & Grégory Nguyen, 2007. "Interbank Exposures: An Empirical Examination of Contagion Risk in the Belgian Banking System," International Journal of Central Banking, International Journal of Central Banking, vol. 3(2), pages 123-171, June.
    16. N. Lesca, 2010. "Introduction," Post-Print halshs-00640602, HAL.
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    More about this item

    Keywords

    systemic risk; network models; contagion; common exposure;

    JEL classification:

    • C21 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models
    • C58 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Financial Econometrics
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill

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