Risk-sharing and contagion in networks
AbstractThe aim of this paper is to investigate how the capacity of an economic system to absorb shocks depends on the specific pattern of interconnections established among financial firms. The key trade-off at work is between the risk-sharing gains enjoyed by firms when they become more interconnected and the large-scale costs resulting from an increased risk exposure. We focus on two dimensions of the network structure: the size of the (disjoint) components into which the network is divided, and the “relative density" of connections within each component. We find that when the distribution of the shocks displays "fat" tails extreme segmentation is optimal, while minimal segmentation and high density are optimal when the distribution exhibits "thin" tails. For other, less regular distributions intermediate degrees of segmentation and sparser connections are also optimal. We also find that there is typically a conflict between efficiency and pairwise stability, due to a “size externality" that is not internalized by firms who belong to components that have reached an individually optimal size. Finally, optimality requires perfect assortativity for firms in a component.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoPaper provided by Universidad Carlos III, Departamento de Economía in its series Economics Working Papers with number we1301.
Date of creation: Jan 2013
Date of revision:
Firm networks; Contagion; Risk Sharing;
Other versions of this item:
- Antonio Cabrales & Piero Gottardo & Fernando Vega-Redondo, 2013. "Risk-Sharing and Contagion in Networks," Economics Working Papers ECO2013/01, European University Institute.
- Antonio Cabrales & Piero Gottardi & Fernando Vega-Redondo, 2014. "Risk-Sharing and Contagion in Networks," CESifo Working Paper Series 4715, CESifo Group Munich.
- D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
- C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
- 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-2013-02-08 (All new papers)
- NEP-CDM-2013-02-08 (Collective Decision-Making)
- NEP-GTH-2013-02-08 (Game Theory)
- NEP-NET-2013-02-08 (Network Economics)
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.:
- Daron Acemoglu & Asuman Ozdaglar & Alireza Tahbaz-Salehi, 2013. "Systemic Risk and Stability in Financial Networks," NBER Working Papers 18727, National Bureau of Economic Research, Inc.
- Allen, Franklin & Babus, Ana & Carletti, Elena, 2011.
"Asset Commonality, Debt Maturity and Systemic Risk,"
CEPR Discussion Papers
8476, C.E.P.R. Discussion Papers.
- Allen, Franklin & Babus, Ana & Carletti, Elena, 2012. "Asset commonality, debt maturity and systemic risk," Journal of Financial Economics, Elsevier, vol. 104(3), pages 519-534.
- Allen, Franklin & Babus, Ana & Carletti, Elena, 2013. "Asset Commonality, Debt Maturity and Systemic Risk," Working Papers 10-30, University of Pennsylvania, Wharton School, Weiss Center.
- Goyal, Sanjeev & Vega-Redondo, Fernando, 2007. "Structural holes in social networks," Journal of Economic Theory, Elsevier, vol. 137(1), pages 460-492, November.
- Antoni Calvó-Armengol & Rahmi İlkılıç, 2009.
"Pairwise-stability and Nash equilibria in network formation,"
International Journal of Game Theory,
Springer, vol. 38(1), pages 51-79, March.
- Antoni Calvó-Armengol & Rahmi Ilkiliç, 2004. "Pairwise-Stability and Nash Equilibria in Network Formation," Working Papers 182, Barcelona Graduate School of Economics.
- Antoni Calvó-Armengol & Rahmi Ilkiliç, 2005. "Pairwise-Stability and Nash Equilibria in Network Formation," Working Papers 2005.34, Fondazione Eni Enrico Mattei.
- Matthew O. Jackson & Asher Wolinsky, 1995.
"A Strategic Model of Social and Economic Networks,"
1098R, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Nier, Erlend & Yang, Jing & Yorulmazer, Tanju & Alentorn, Amadeo, 2008.
"Network models and financial stability,"
Bank of England working papers
346, Bank of England.
- Francis Bloch & Garance Genicot, 2005.
"Informal Insurance in Social Networks,"
2005 Meeting Papers
156, Society for Economic Dynamics.
- Francis Bloch (GREQAM and Universite de la Mediterranee), Garance Genicot (Georgetown University, and Debraj Ray (New York University and Instituto de Analisis Economico (CSIC)), 2004. "Informal Insurance in Social Networks," Working Papers gueconwpa~04-04-16, Georgetown University, Department of Economics.
- Xavier Freixas & Bruno M. Parigi & Jean-Charles Rochet, 2000.
"Systemic risk, interbank relations, and liquidity provision by the central bank,"
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.
- 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 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.
- Diebold, Francis X. & Yilmaz, Kamil, 2008.
"Measuring financial asset return and volatilty spillovers, with application to global equity markets,"
CFS Working Paper Series
2008/26, Center for Financial Studies (CFS).
- FrancisX. Diebold & Kamil Yilmaz, 2009. "Measuring Financial Asset Return and Volatility Spillovers, with Application to Global Equity Markets," Economic Journal, Royal Economic Society, vol. 119(534), pages 158-171, 01.
- Francis X. Diebold & Kamil Yilmaz, 2008. "Measuring financial asset return and volatility spillovers, with application to global equity markets," Working Papers 08-16, Federal Reserve Bank of Philadelphia.
- Francis X. Diebold & Kamil Yilmaz, 2007. "Measuring Financial Asset Return and Volatility Spillovers, With Application to Global Equity Markets," PIER Working Paper Archive 07-002, Penn Institute for Economic Research, Department of Economics, University of Pennsylvania.
- Francis X. Diebold & Kamil Yilmaz, 2008. "Measuring Financial Asset Return and Volatility Spillovers, With Application to Global Equity Markets," NBER Working Papers 13811, National Bureau of Economic Research, Inc.
- Diebold, Francis X. & Yilmaz, Kamil, 2007. "Measuring financial asset return and volatility spillovers, with application to global equity markets," CFS Working Paper Series 2007/02, Center for Financial Studies (CFS).
- Francis X. Diebold & Kamil Yılmaz, 2007. "Measuring Financial Asset Return and Volatility Spillovers, With Application to Global Equity Markets," KoÃ§ University-TUSIAD Economic Research Forum Working Papers 0705, Koc University-TUSIAD Economic Research Forum.
- Bramoullé, Yann & Kranton, Rachel, 2007.
Journal of Economic Behavior & Organization,
Elsevier, vol. 64(3-4), pages 275-294.
- Coralio Ballester & Antoni Calvó-Armengol & Yves Zenou, 2004.
"Who's Who in Networks. Wanted: The Key Player,"
178, Barcelona Graduate School of Economics.
- Coralio Ballester & Antoni Calvo-Armengol & Yves Zenou, 2005. "Who's Who in Networks. Wanted: the Key Player," NajEcon Working Paper Reviews 666156000000000586, www.najecon.org.
- Ballester, Coralio & Calvó-Armengol, Antoni & Zenou, Yves, 2005. "Who’s Who in Networks. Wanted: The Key Player," CEPR Discussion Papers 5329, C.E.P.R. Discussion Papers.
- Yaron Leitner, 2005. "Financial Networks: Contagion, Commitment, and Private Sector Bailouts," Journal of Finance, American Finance Association, vol. 60(6), pages 2925-2953, December.
- Helmut Elsinger & Alfred Lehar & Martin Summer, 2002.
"Risk Assessment for Banking Systems,"
79, Oesterreichische Nationalbank (Austrian Central Bank).
- Paul Krugman, 1999. "Balance Sheets, the Transfer Problem, and Financial Crises," International Tax and Public Finance, Springer, vol. 6(4), pages 459-472, November.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ().
If references are entirely missing, you can add them using this form.