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.
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Fabio Caccioli & Munik Shrestha & Cristopher Moore & J. Doyne Farmer, 2012. "Stability analysis of financial contagion due to overlapping portfolios," Papers 1210.5987, arXiv.org.
- 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;EDP Sciences, 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.
- 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.
- Jan Lorenz & Stefano Battiston & Frank Schweitzer, .
"Systemic Risk in a Unifying Framework for Cascading Processes on Networks,"
CCSS-09-011, ETH Zurich, Chair of Systems Design.
- 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;EDP Sciences, 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.
- 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.
- Simone LENZU & Gabriele TEDESCHI, 2012.
"Systemic risk on different interbank network topologies,"
375, Universita' Politecnica delle Marche (I), Dipartimento di Scienze Economiche e Sociali.
- 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.
- Gai, Prasanna & Kapadia, Sujit, 2010. "Contagion in financial networks," Bank of England working papers 383, Bank of England.
- 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.
- 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.
- Iori, G. & Masi, G. D. & Precup, O. V. & Gabbi, G. & Caldarelli, G., 2005. "A network analysis of the Italian oversight money market," Working Papers 05/05, Department of Economics, City University London.
When requesting a correction, please mention this item's handle: RePEc:arx:papers:1308.0652. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (arXiv administrators)
If references are entirely missing, you can add them using this form.