Efficient immunization strategies to prevent financial contagion
Many immunization strategies have been proposed to prevent infectious viruses from spreading through a network. In this study, we propose efficient immunization strategies to prevent a default contagion that might occur in a financial network. An essential difference from the previous studies on immunization strategy is that we take into account the possibility of serious side effects. Uniform immunization refers to a situation in which banks are "vaccinated" with a common low-risk asset. The riskiness of immunized banks will decrease significantly, but the level of systemic risk may increase due to the de-diversification effect. To overcome this side effect, we propose another immunization strategy, counteractive immunization, which prevents pairs of banks from failing simultaneously. We find that counteractive immunization can efficiently reduce systemic risk without altering the riskiness of individual banks.
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- Iori, G. & Masi, G. D. & Precup, O. V. & Gabbi, G. & Caldarelli, G., 2005.
"A network analysis of the Italian oversight money market,"
05/05, Department of Economics, City University London.
- Iori, Giulia & De Masi, Giulia & Precup, Ovidiu Vasile & Gabbi, Giampaolo & Caldarelli, Guido, 2008. "A network analysis of the Italian overnight money market," Journal of Economic Dynamics and Control, Elsevier, vol. 32(1), pages 259-278, January.
- 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.
- J. Lorenz & S. Battiston & F. Schweitzer, 2009.
"Systemic risk in a unifying framework for cascading processes on networks,"
The European Physical Journal B - Condensed Matter and Complex Systems,
Springer, vol. 71(4), pages 441-460, October.
- Jan Lorenz & Stefano Battiston & Frank Schweitzer, 2009. "Systemic Risk in a Unifying Framework for Cascading Processes on Networks," Papers 0907.5325, arXiv.org, revised Jan 2010.
- Jan Lorenz & Stefano Battiston & Frank Schweitzer, . "Systemic Risk in a Unifying Framework for Cascading Processes on Networks," Working Papers CCSS-09-011, ETH Zurich, Chair of Systems Design.
- F. Kyriakopoulos & S. Thurner & C. Puhr & S. W. Schmitz, 2009. "Network and eigenvalue analysis of financial transaction networks," The European Physical Journal B - Condensed Matter and Complex Systems, Springer, vol. 71(4), pages 523-531, October.
- Gai, Prasanna & Haldane, Andrew & Kapadia, Sujit, 2011. "Complexity, concentration and contagion," Journal of Monetary Economics, Elsevier, vol. 58(5), pages 453-470.
- Nier, Erlend & Yang, Jing & Yorulmazer, Tanju & Alentorn, Amadeo, 2008.
"Network models and financial stability,"
Bank of England working papers
346, Bank of England.
- Teruyoshi Kobayashi, 2013.
"Network versus portfolio structure in financial systems,"
- Teruyoshi Kobayashi, 2013. "Network versus portfolio structure in financial systems," Discussion Papers 1307, Graduate School of Economics, Kobe University.
- Kimmo Soramaki & Morten L. Bech & Jeffrey Arnold & Robert J. Glass & Walter E. Beyeler, 2006.
"The topology of interbank payment flows,"
243, Federal Reserve Bank of New York.
- 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.
- Fabio Caccioli & Munik Shrestha & Cristopher Moore & J. Doyne Farmer, 2012. "Stability analysis of financial contagion due to overlapping portfolios," Papers 1210.5987, arXiv.org.
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