Financial contagion through capital connections: a model of the origin and spread of bank panics
Financial contagion is modeled as an equilibrium phenomenon in a dynamic setting with incomplete information and multiple banks. The equilibrium probability of bank failure is uniquely determined. We explore how the cross holding of deposits motivated by imperfectly correlated regional liquidity shocks can lead to contagious effects conditional on the failure of a financial institution. We show that contagion is possible in the unique equilibrium of the economy and characterize exactly when it may exist. At the same time, we identify a direction of flow for contagious effects, which provides a rationale for localized financial panics. Simulations identify the optimal level of interbank deposit holdings in the presence of contagion risk. Our results suggest that when the probability of bank failure is low, maximal levels of interbank holdings are optimal. When cross holding of deposits is complete, we demonstrate that the intensity of contagion is increasing in the size of regionally aggregate liquidity shocks.
|Date of creation:||Nov 2002|
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- Jean-Charles Rochet & Jean Tirole, 1996.
"Interbank lending and systemic risk,"
Board of Governors of the Federal Reserve System (U.S.), pages 733-765.
- Albert S. Kyle, 2001. "Contagion as a Wealth Effect," Journal of Finance, American Finance Association, vol. 56(4), pages 1401-1440, 08.
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- Douglas W. Diamond & Philip H. Dybvig, 2000.
"Bank runs, deposit insurance, and liquidity,"
Federal Reserve Bank of Minneapolis, issue Win, pages 14-23.
- 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.
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