Financial fragility, systemic risks and informational spillovers: modelling banking contagion as state-contingent change in cross-bank correlation
Moheeput, Ashwin (2008) Financial fragility, systemic risks and informational spillovers: modelling banking contagion as state-contingent change in cross-bank correlation. Working Paper. Coventry: University of Warwick, Department of Economics. (Warwick economic research papers).
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We consider banking panic transmission in a two-bank setting, in which the main propagator of a shock across banks is the informational spillover channel. Banks are perceived to be positively connected to some unobserved macroeconomic fundamental. Depositors in each bank are assumed to noisily observe their bank's idiosyncratic fundamental. The game takes a dynamic bayesian setting with depositors of one bank, making their decision to withdraw after observing the event in the other bank. We show that, if this public event is used for bayesian inference about the state of the common macroeconomic fundamental, then, in the equilibrium profile of the game, contagion and correlation both occur with positive probability, with contagion modeled as a state-contingent change in the cross-bank correlation. Such endogenous characterisation of probabilistic assessments of contagion and correlation, has the appealing feature that it enables us to distill between these two concepts as equilibrium phenomena and to assess their relative importance in a given banking panic transmission setting. We show that contagion is characterised by public informational dominance in depositors.decision set.
|Item Type:||Working or Discussion Paper (Working Paper)|
|Subjects:||H Social Sciences > HG Finance
H Social Sciences > HB Economic Theory
|Divisions:||Faculty of Social Sciences > Economics|
|Library of Congress Subject Headings (LCSH):||Banks and banking, Central, Bayesian statistical decision theory, Financial crises, Business communication|
|Series Name:||Warwick economic research papers|
|Publisher:||University of Warwick, Department of Economics|
|Place of Publication:||Coventry|
|Date:||21 April 2008|
|Number of Pages:||76|
|Status:||Not Peer Reviewed|
|Access rights to Published version:||Open Access|
|References:||Acharya, V. and T. Yorulmazer (2002) �Informational Contagion and Inter- bank Correlation in a Theory of Systemic Risks�, mimeo, London Business School Aharony, J. and I. Swary (1996) �Evidence on Information-Based Contagion E¤ects of Bank Failures�, Journal of Banking and Finance, vol 20(1), pp 57-69 Ahluwalia, P. (2000) �Discriminating Contagion: An Alternative Explanation of Contagious Currency Crises in Emerging Markets�, IMF Working Paper WP/00/14, Washington DC, International Monetary Fund Allen, F. and D. Gale (2000) �Financial Contagion�, Journal of Political Economy, vol 108, pp1-33 Allen,F. and D. Gale �Comparing Financial Systems�, MIT press, 2003 Angeletos, G., C. Hellwig and A. Pavan (2006) �Signalling in a Global Game: Coordination and Policy Traps�, Journal of Political Economy, 114(3) Angeletos, G., C. Hellwig and A. Pavan (2007) �Dynamic Global Game of Regime Change:Learning, Multiplicity and Timing of Attacks�, Econometrica 75:3  Athey, S. (2001) �Single Crossing Properties and the Existence of Pure Strategy Equilibria in Games of Incomplete Information�, Econometrica 69, pp 861-889 Banerjee, A. (1992) �A Simple Model of Herd behaviour�, Quarterly Journal of Economics, vol 107(3), pp 797-818 Carlsson, H. and E. VanDamme (1993) �Global Games and Equilibrium Selection�, Econometrica, vol 61,5, pp 989-1018 Chamley, C. (2003) �Dynamic Speculative Attacks�, American Economic Review, 93(3), pp 603-621 Chamley, C (2004) �Rational Herds and Models of Social Learning�, Cambridge University Press Chang, R and A. Velasco (2000) �Financial Fragility and the Exchange Rate Regime�, Journal of Economic Theory, 92, pp1-34 Chari, V.V. and R. Jagannathan (1988) �Banking Panics, Information and Rational Expectations Equilibrium �, Journal of Finance, 43, pp 749-761 Chen, Y. (1999) �Banking panics: the role of First-Come-First-Serve rule and informational externalities�. Journal of Political Economy, vol 107, No. 5, pp 946-968 Dasgupta, A. (2004) �Financial Contagion through Capital Connections�, Journal of European Economic Association, 2(6), PP 1049-1084 Dasgupta, A. (2007) �Coordination and Delay in Global Games�, Journal of Economic Theory, 134, pp 195-225 Diamond, D. and P. Dybvig (1983) �Bank Runs, Deposit Insurance and Liquidity�, Journal of Political Economy, vol 91 (3), pp 401-419 Fama, E. (1980) �Banking in the Theory of Finance�, Journal of Monetary Economics, 6(1), pp 39-57 Femminis, G. (2003) �Currency Attacks with Multiple Equilibria and Imperfect Information: the Role of Wage-Setters�, CEPR working paper no. 329 Forbes, K. and R. Rigobon (2001) �Contagion in Latin America: De�nitions, Measurement and Policy Implications� Freixas, X. and J. C. Rochet �Microeconomics of Banking�, MIT press 2002 Freixas, X. , Parigi and J.C.Rochet (2000) �Systemic Risks, Interbank Relations and Liquidity Provision by the Central Bank�, Journal of Money, Credit and Banking, 32, pp 611-638 Fundenberg, D. and J.Tirole �Game Theory�, Massachussetts Institute of Technology (MIT) Press, 1991 Goldstein, I. and A. Pauzner (2005) �Demand Deposit Contracts and the Probability of Bank Runs�, Journal of Finance, 60(3), pp 1493 Gorton, G. (1988) �Banking Panics and Business Cycles�, Oxford Economic Papers 40, pp 751-781 Gorton, G. and A.Winton (2002) �Financial Intermediation�, Handbook of the Economics of Finance, G. Costantinides, M. Harris, R. Stulz (eds), Amsterdam, North Holland Hellwig, C. (2002) �Public Information, Private Information and Multiplicity of Equilibria in Coordination Games�, Journal of Economic Theory, vol 107, pp 191-222 Morris, S and H. S. Shin (1998) �Unique Equilibrium in a Model of Self-ful�lling Currency Attacks �, American Economic Review 88, pp 587-597 Morris, S. and Hyun Song Shin (2001) �Global Games - Theory and Applications�, in Dewatripont, Hansen and Turnovsky, eds., Advances in Eco- nomics and Econometrics (8th world congress of Econometric Society), Cambridge, UK: Cambridge University Moheeput, A (2005) �Microsystemic Risks and Central Bank Policy: An Analytical Taxonomy�, Bank of England paper, circulated in Financial Stability Area (This is the work I produced during my PhD internship at the Bnak of England) Rochet, J.C and J. Tirole (1996) �Interbank Lending and Systemic Risks�, Journal of Money, Credit and Banking, 28, pp 733-762 Vaugirard, V. (2004) �Informational Contagion of Sudden Stops�, Open Economies Review 15, pp 169-192 Vaugirard, V. (2005) �Information Contagion of Bank Runs in a Third- Generation Crisis Model�, Journal of International Money and Finance forthcoming|
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