Interbanking networks : towards a small financial world ?
In a standard stylised frame derived from Diamond Dybvig, banks operate within a network of debt contracts. Working in network enables banks to decentralize a Pareto Optimal allocation while it is impossible if banks operate in isolation. However, this outcome depends on the architecture of the network which itself depends on network participant number and on the cost structure. In a general frame with no cost, two network structures only decentralize first best outcome. The first structure highlights a Small World property as banks must be bound together at a network distance that equals at maximum 2. The second structure exhibits a strict regular topology. The rise in the number of competing banks leads to a more than proportional rise in interbank lending operations. In a frame with positive cost, we prove a single architecture both minimizes aggregate costs and decentralizes first best outcome. However, this topology has little chance to emerge as it exhibits unbalanced cost sharing among players. Aggregate cost efficiency is indeed not compatible with individual cost minimization.
|Date of creation:||May 2004|
|Date of revision:|
|Contact details of provider:|| Postal: 106 - 112 boulevard de l'Hôpital, 75647 Paris cedex 13|
Phone: 01 44 07 81 00
Fax: 01 44 07 81 09
Web page: http://mse.univ-paris1.fr/
More information through EDIRC
References listed on IDEAS
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.:
- Jacklin, Charles J & Bhattacharya, Sudipto, 1988. "Distinguishing Panics and Information-Based Bank Runs: Welfare and Policy Implications," Journal of Political Economy, University of Chicago Press, vol. 96(3), pages 568-92, June.
- Aghion, Philippe & Bolton, Patrick & Dewatripont, Mathias, 2000.
"Contagious bank failures in a free banking system,"
12490629, Harvard University Department of Economics.
- Corominas-Bosch, Margarida, 2004. "Bargaining in a network of buyers and sellers," Journal of Economic Theory, Elsevier, vol. 115(1), pages 35-77, March.
- Goyal, Sanjeev & Joshi, Sumit, 2003.
"Networks of collaboration in oligopoly,"
Games and Economic Behavior,
Elsevier, vol. 43(1), pages 57-85, April.
- Sumit Joshi, 2000. "Networks of Collaboration in Oligopoly," Econometric Society World Congress 2000 Contributed Papers 0623, Econometric Society.
- Goyal, S. & Joshi, S., 2000. "Networks of Collaboration in Oligopoly," Econometric Institute Research Papers EI 9952-/A, Erasmus University Rotterdam, Erasmus School of Economics (ESE), Econometric Institute.
- Peter M. Garber & Vittorio U. Grilli, 1988.
"Bank Runs in Open Economies and The International Transmission of Panics,"
NBER Working Papers
2764, National Bureau of Economic Research, Inc.
- Garber, Peter M. & Grilli, Vittorio U., 1989. "Bank runs in open economies and the international transmission of panics," Journal of International Economics, Elsevier, vol. 27(1-2), pages 165-175, August.
- Garber, P.M. & Grilli, V., 1988. "Bank Runs In Open Economies And The International Transmission Of Panics," Papers 552, Yale - Economic Growth Center.
- Garber, P.M. & Grilli, V.U., 1988. "Bank Runs In Open Economies And The International Transmission Of Panics," RCER Working Papers 122, University of Rochester - Center for Economic Research (RCER).
- Jackson, Matthew O., 1998.
"The Evolution of Social and Economic Networks,"
1044, California Institute of Technology, Division of the Humanities and Social Sciences.
- Matthew O. Jackson & Alison Watts, 2000.
"On the Formation of Interaction Networks in Social Coordination Games,"
Econometric Society World Congress 2000 Contributed Papers
0778, Econometric Society.
- Jackson, Matthew O. & Watts, Alison, 2002. "On the formation of interaction networks in social coordination games," Games and Economic Behavior, Elsevier, vol. 41(2), pages 265-291, November.
- Theodosios Temzelides, 1995.
"Evolution, coordination, and banking panics,"
95-27, Federal Reserve Bank of Philadelphia.
- Jackson, Matthew O. & Wolinsky, Asher, 1996.
"A Strategic Model of Social and Economic Networks,"
Journal of Economic Theory,
Elsevier, vol. 71(1), pages 44-74, October.
- Matthew O. Jackson & Asher Wolinsky, 1995. "A Strategic Model of Social and Economic Networks," Discussion Papers 1098R, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Matthew O. Jackson & Asher Wolinsky, 1994. "A Strategic Model of Social and Economic Networks," Discussion Papers 1098, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- C. H. Furfine, 1999. "Interbank exposures: quantifying the risk of contagion," BIS Working Papers 70, Bank for International Settlements.
- Matthew O. Jackson, 2003.
"A Survey of Models of Network Formation: Stability and Efficiency,"
Game Theory and Information
- Matthew O. Jackson, 2003. "A survey of models of network formation: Stability and efficiency," Working Papers 1161, California Institute of Technology, Division of the Humanities and Social Sciences.
- Rochet, Jean-Charles & Tirole, Jean, 1996.
"Controlling Risk in Payment Systems,"
Journal of Money, Credit and Banking,
Blackwell Publishing, vol. 28(4), pages 832-62, November.
- Dutta, Bhaskar & Mutuswami, Suresh, 1996.
971, California Institute of Technology, Division of the Humanities and Social Sciences.
- Yehning Chen, 1999. "Banking Panics: The Role of the First-Come, First-Served Rule and Information Externalities," Journal of Political Economy, University of Chicago Press, vol. 107(5), pages 946-968, October.
- Jean-Charles Rochet & Jean Tirole, 1996.
"Interbank lending and systemic risk,"
Board of Governors of the Federal Reserve System (U.S.), pages 733-765.
- Gorton, Gary, 1985. "Bank suspension of convertibility," Journal of Monetary Economics, Elsevier, vol. 15(2), pages 177-193, March.
- Dirk Schoenmaker, 1992. "Institutional Separation between Supervisory and Monetary Agencies," FMG Special Papers sp52, Financial Markets Group.
When requesting a correction, please mention this item's handle: RePEc:mse:wpsorb:v04046. 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: (Lucie Label)
If references are entirely missing, you can add them using this form.