Resilience of the Interbank Network to Shocks and Optimal Bail-Out Strategy: Advantages of "Tiered" Banking Systems
AbstractSystemic risk and the scale of systemic breakdown in the banking system are the key concern for central banks charged with safeguarding overall financial stability. This paper focuses on the risk and potential impact of system-wide defaults in the frequently observed ”tiered” banking system, where relatively few first-tier head institutions are connected with second-tier ”peripheral” banks and are also connected with each other, while the peripheral banks are almost exclusively connected with the head banks. The banking network is constructed from a number of banks which are linked by interbank exposures with a certain predefined probability. In this framework, the tiered structure is represented either by a network with negative correlation in connectivity of neighboring banks, or alternatively, by a network with a scale-free distribution of connectivity across banks. The main finding of the paper highlights the advantages of tiering within the banking system in terms of both the resilience of the banking network to systemic shocks and the extent of necessary government intervention should a crisis evolve. Specifically, the tiered network structure, showing negative correlations in bank connectivity, is found to be less prone to systemic breakdown than other structures, showing either positive or zero correlations. Moreover, in the scale-free tiered system, the resilience of the system to shocks increases as the level of tiering grows. Also, the targeted bail-out policy of the government aimed at rescuing the most connected failing banks in the first place, is expected to be more effective and induce lower costs in a tiered system with high level of tiering.
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Bibliographic InfoPaper provided by University of Vienna, Department of Economics in its series Vienna Economics Papers with number 1203.
Date of creation: Mar 2012
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Find related papers by JEL classification:
- C63 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Computational Techniques
- D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
- G01 - Financial Economics - - General - - - Financial Crises
- G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
This paper has been announced in the following NEP Reports:
- NEP-ALL-2012-03-21 (All new papers)
- NEP-BAN-2012-03-21 (Banking)
- NEP-CBA-2012-03-21 (Central Banking)
- NEP-NET-2012-03-21 (Network Economics)
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- Sanjeev Goyal & Andrea Galeotti, 2007.
"A Theory of Strategic Diffusion,"
2007.70, Fondazione Eni Enrico Mattei.
- Yaron Leitner, 2005. "Financial Networks: Contagion, Commitment, and Private Sector Bailouts," Journal of Finance, American Finance Association, vol. 60(6), pages 2925-2953, December.
- Freixas, Xavier & Parigi, Bruno & Rochet, Jean Charles, 1999.
"Systemic Risk, Interbank Relations and Liquidity Provision by the Central Bank,"
CEPR Discussion Papers
2325, C.E.P.R. Discussion Papers.
- Xavier Freixas & Bruno M. Parigi & Jean-Charles Rochet, 2000. "Systemic risk, interbank relations, and liquidity provision by the central bank," Proceedings, Federal Reserve Bank of Cleveland, pages 611-640.
- Freixas, Xavier & Parigi, Bruno M & Rochet, Jean-Charles, 2000. "Systemic Risk, Interbank Relations, and Liquidity Provision by the Central Bank," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 32(3), pages 611-38, August.
- Xavier Freixas & Bruno Parigi & Jean Charles Rochet, 1998. "Systemic risk, interbank relations and liquidity provision by the Central Bank," Economics Working Papers 440, Department of Economics and Business, Universitat Pompeu Fabra, revised Sep 1999.
- X. Freixas & B. Parigi & J-C. Rochet, 2000. "Systemic Risk, Interbank Relations and Liquidity Provision by theCentral Bank," DNB Staff Reports (discontinued) 47, Netherlands Central Bank.
- Nier, Erlend & Yang, Jing & Yorulmazer, Tanju & Alentorn, Amadeo, 2008.
"Network models and financial stability,"
Bank of England working papers
346, Bank of England.
- 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.
- Degryse, H.A. & Nguyen, G., 2006. "Interbank Exposures: An Empirical Examination of Contagion Risk in the Belgian Banking System," Discussion Paper 2006-016, Tilburg University, Tilburg Law and Economic Center.
- Sandro Brusco & Fabio Castiglionesi, 2007.
"Liquidity Coinsurance, Moral Hazard, and Financial Contagion,"
Journal of Finance,
American Finance Association, vol. 62(5), pages 2275-2302, October.
- Sandro Brusco & Fabio Castiglionesi, 2005. "Liquidity Coinsurance, Moral Hazard and Financial Contagion," Department of Economics Working Papers 05-12, Stony Brook University, Department of Economics.
- 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.
- Jean-Charles Rochet & Jean Tirole, 1996.
"Interbank lending and systemic risk,"
Board of Governors of the Federal Reserve System (U.S.), pages 733-765.
- Mistrulli, Paolo Emilio, 2011.
"Assessing financial contagion in the interbank market: Maximum entropy versus observed interbank lending patterns,"
Journal of Banking & Finance,
Elsevier, vol. 35(5), pages 1114-1127, May.
- Paolo Emilio Mistrulli, 2007. "Assessing financial contagion in the interbank market: Maximum entropy versus observed interbank lending patterns," Temi di discussione (Economic working papers) 641, Bank of Italy, Economic Research and International Relations Area.
- Castiglionesi, F. & Navarro, N., 2007. "Optimal Fragile Financial Networks," Discussion Paper 2007-100, Tilburg University, Center for Economic Research.
- Helmut Elsinger & Alfred Lehar & Martin Summer, 2002.
"Risk Assessment for Banking Systems,"
79, Oesterreichische Nationalbank (Austrian Central Bank).
- Acharya, Viral V & Yorulmazer, Tanju, 2005. "Cash-in-the-Market Pricing and Optimal Bank Bailout Policy," CEPR Discussion Papers 5154, C.E.P.R. Discussion Papers.
- Upper, Christian & Worms, Andreas, 2002.
"Estimating Bilateral Exposures in the German Interbank Market: Is there a Danger of Contagion?,"
Discussion Paper Series 1: Economic Studies
2002,09, Deutsche Bundesbank, Research Centre.
- Upper, Christian & Worms, Andreas, 2004. "Estimating bilateral exposures in the German interbank market: Is there a danger of contagion?," European Economic Review, Elsevier, vol. 48(4), pages 827-849, August.
- Michael Boss & Martin Summer & Stefan Thurner, 2004. "Contagion Flow Through Banking Networks," Papers cond-mat/0403167, arXiv.org.
- Furfine, Craig H, 2003. " Interbank Exposures: Quantifying the Risk of Contagion," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 35(1), pages 111-28, February.
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