Macroprudential Consolidation Policy in Interbank Networks
Can consolidation policy be made consistent with macro-prudential supervision? In this study, we seek to provide new insights on this key-question using a network approach. We study how the resilience of a banking network evolves as we shock an initially homogenous competitive market with a sequence of M&A activities that significantly alter the topology of the network. We study how different M&A treatments impact on the structural vulnerabilities that can propagate through the system and we show that the severity of contagion and default dynamics depends on the chosen treatment. The desirability of alternative competitive settings (such as hub-centered market or a more concentrated and yet symmetric market) are assessed against an homogenous benchmark case and we show that the choice depends crucially on the size of the interbank market and the level of bank capitalization. The existence of a large highly connected hub is beneficial in a capitalized network with a well-developed interbank market but it can significantly weaken the system resilience in a poorly capitalized market. Antitrust and competition authorities shall adopt a state-contingent approach to M&A activities according to the market conditions in which banks operate.
|Date of creation:||2014|
|Date of revision:|
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- Xavier Vives T., 2010.
"Competition and Stability in Banking,"
Journal Economía Chilena (The Chilean Economy),
Central Bank of Chile, vol. 13(2), pages 85-112, August.
- Xavier Vives, 2011. "Competition and Stability in Banking," Central Banking, Analysis, and Economic Policies Book Series, in: Luis Felipe Céspedes & Roberto Chang & Diego Saravia (ed.), Monetary Policy under Financial Turbulence, edition 1, volume 16, chapter 12, pages 455-502 Central Bank of Chile.
- Vives, Xavier, 2010. "Competition and stability in banking," IESE Research Papers D/852, IESE Business School.
- Xavier Vives, 2010. "Competition and Stability in Banking," Working Papers Central Bank of Chile 576, Central Bank of Chile.
- Xavier Vives, 2010. "Competition and Stability in Banking," CESifo Working Paper Series 3050, CESifo Group Munich.
- Berger, Allen N. & Klapper, Leora F. & Turk-Ariss, Rima, 2008.
"Bank competition and financial stability,"
Policy Research Working Paper Series
4696, The World Bank.
- 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.
- Joon‐Ho Hahm & Hyun Song Shin & Kwanho Shin, 2013.
"Noncore Bank Liabilities and Financial Vulnerability,"
Journal of Money, Credit and Banking,
Blackwell Publishing, vol. 45, pages 3-36, 08.
- Joon-Ho Hahm & Hyun Song Shin & Kwanho Shin, 2012. "Non-Core Bank Liabilities and Financial Vulnerability," NBER Working Papers 18428, National Bureau of Economic Research, Inc.
- Yaron Leitner, 2005. "Financial Networks: Contagion, Commitment, and Private Sector Bailouts," Journal of Finance, American Finance Association, vol. 60(6), pages 2925-2953, December.
- Soramäki, Kimmo & Bech, Morten L. & Arnold, Jeffrey & Glass, Robert J. & Beyeler, Walter E., 2007.
"The topology of interbank payment flows,"
Physica A: Statistical Mechanics and its Applications,
Elsevier, vol. 379(1), pages 317-333.
- Kartik Anand & Prasanna Gai & Sujit Kapadia & Simon Brennan & Matthew Willison, 2011.
"A Network Model of Financial System Resilience,"
SFB 649 Discussion Papers
SFB649DP2011-051, Sonderforschungsbereich 649, Humboldt University, Berlin, Germany.
- 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.
- Stefano Battiston & Domenico Delli Gatti & Mauro Gallegati & Bruce Greenwald & Joseph E. Stiglitz, .
"Default Cascades: When Does Risk Diversification Increase Stability?,"
ETH-RC-11-006, ETH Zurich, Chair of Systems Design.
- Battiston, Stefano & Gatti, Domenico Delli & Gallegati, Mauro & Greenwald, Bruce & Stiglitz, Joseph E., 2012. "Default cascades: When does risk diversification increase stability?," Journal of Financial Stability, Elsevier, vol. 8(3), pages 138-149.
- E. Gaffeo & M. Molinari, 2015.
"Interbank contagion and resolution procedures: inspecting the mechanism,"
Taylor & Francis Journals, vol. 15(4), pages 637-652, April.
- Edoardo Gaffeo & Massimo Molinari, 2013. "Interbank contagion and resolution procedures: inspecting the mechanism," DEM Discussion Papers 2013/09, Department of Economics and Management.
- Gai, Prasanna & Kapadia, Sujit, 2010. "Contagion in financial networks," Bank of England working papers 383, Bank of England.
- Kevin L. Kliesen, 2013. "Uncertainty and the economy," The Regional Economist, Federal Reserve Bank of St. Louis, issue Apr.
- Krause, Andreas & Giansante, Simone, 2012. "Interbank lending and the spread of bank failures: A network model of systemic risk," Journal of Economic Behavior & Organization, Elsevier, vol. 83(3), pages 583-608.
- Gai, Prasanna & Haldane, Andrew & Kapadia, Sujit, 2011. "Complexity, concentration and contagion," Journal of Monetary Economics, Elsevier, vol. 58(5), pages 453-470.
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