How interbank lending amplifies overlapping portfolio contagion: A case study of the Austrian banking network
In spite of the growing theoretical literature on cascades of failures in interbank lending networks, empirical results seem to suggest that networks of direct exposures are not the major channel of financial contagion. In this paper we show that networks of interbank exposures can however significantly amplify contagion due to overlapping portfolios. To illustrate this point, we consider the case of the Austrian interbank network and perform stress tests on it according to different protocols. We consider in particular contagion due to (i) counterparty loss; (ii) roll-over risk; and (iii) overlapping portfolios. We find that the average number of bankruptcies caused by counterparty loss and roll-over risk is fairly small if these contagion mechanisms are considered in isolation. Once portfolio overlaps are also accounted for, however, we observe that the network of direct interbank exposures significantly contributes to systemic risk.
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- Helmut Elsinger & Alfred Lehar & Martin Summer, 2006.
"Risk Assessment for Banking Systems,"
INFORMS, vol. 52(9), pages 1301-1314, September.
- Lenzu, Simone & Tedeschi, Gabriele, 2012.
"Systemic risk on different interbank network topologies,"
Physica A: Statistical Mechanics and its Applications,
Elsevier, vol. 391(18), pages 4331-4341.
- Simone LENZU & Gabriele TEDESCHI, 2012. "Systemic risk on different interbank network topologies," Working Papers 375, Universita' Politecnica delle Marche (I), Dipartimento di Scienze Economiche e Sociali.
- Catherine J. Morrison, 1985.
"Productivity Measurement with Nonstatic Expectations and Varying Capacity Utilization: An Integrated Approach,"
NBER Working Papers
1561, National Bureau of Economic Research, Inc.
- Morrison, Catherine J., 1986. "Productivity measurement with non-static expectations and varying capacity utilization : An integrated approach," Journal of Econometrics, Elsevier, vol. 33(1-2), pages 51-74.
- Degryse, H.A. & Nguyen, G., 2004.
"Interbank Exposures : An Empirical Examination of Systemic Risk in the Belgian Banking System,"
2004-4, Tilburg University, Center for Economic Research.
- Hans Degryse & Grégory Nguyen, 2004. "Interbank exposures: an empirical examination of systemic risk in the Belgian banking system," Working Paper Research 43, National Bank of Belgium.
- Michele Manna & Carmela Iazzetta, 2009. "The topology of the interbank market: developments in Italy since 1990," Temi di discussione (Economic working papers) 711, Bank of Italy, Economic Research and International Relations Area.
- 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.
- Christian Upper & Andreas Worms, 2001. "Estimating bilateral exposures in the German interbank market: is there a danger of contagion?," BIS Papers chapters, in: Bank for International Settlements (ed.), Marrying the macro- and micro-prudential dimensions of financial stability, volume 1, pages 211-229 Bank for International Settlements.
- 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.
- Claus Puhr & Reinhardt Seliger & Michael Sigmund, 2012. "Contagiousness and Vulnerability in the Austrian Interbank Market," Financial Stability Report, Oesterreichische Nationalbank (Austrian Central Bank), issue 24, pages 62-78.
- Xia, Yongxiang & Fan, Jin & Hill, David, 2010. "Cascading failure in Watts–Strogatz small-world networks," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 389(6), pages 1281-1285.
- Nier, Erlend & Yang, Jing & Yorulmazer, Tanju & Alentorn, Amadeo, 2008.
"Network models and financial stability,"
Bank of England working papers
346, Bank of England.
- George Sheldon & Martin Maurer, 1998. "Interbank Lending and Systemic Risk: An Empirical Analysis for Switzerland," Swiss Journal of Economics and Statistics (SJES), Swiss Society of Economics and Statistics (SSES), vol. 134(IV), pages 685-704, December.
- Georg, Co-Pierre, 2011. "The effect of the interbank network structure on contagion and common shocks," Discussion Paper Series 2: Banking and Financial Studies 2011,12, Deutsche Bundesbank, Research Centre.
- Jeannette Müller, 2006. "Interbank Credit Lines as a Channel of Contagion," Journal of Financial Services Research, Springer;Western Finance Association, vol. 29(1), pages 37-60, February.
- Gai, Prasanna & Haldane, Andrew & Kapadia, Sujit, 2011. "Complexity, concentration and contagion," Journal of Monetary Economics, Elsevier, vol. 58(5), pages 453-470.
- Mathias Drehmann & Nikola Tarashev, 2011. "Systemic importance: some simple indicators," BIS Quarterly Review, Bank for International Settlements, pages -, March.
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