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A Theory of Government Bailouts in a Heterogeneous Banking System

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  • Ettore Panetti
  • Filomena Garcia

Abstract

How should a government bail out a heterogeneous banking system subject to systemic self-fulfilling runs? To answer this question, we develop a theory of banking with multiple groups of depositors of different size and wealth, where systemic self-fulfilling runs emerge as a consequence of a global game, and a government uses a public good to bailout banks through liquidity injections. In this framework, we characterize the endogenous probability of a systemic self-fulfilling run, and the conditions under which a full bailout cannot be part of the equilibrium. The optimal bailout strategy should target those banks whose bailout has the largest marginal impact on the probability of a systemic self-fulfilling run, and whose depositors are at the lower end of the wealth distribution.

Suggested Citation

  • Ettore Panetti & Filomena Garcia, 2017. "A Theory of Government Bailouts in a Heterogeneous Banking System," Working Papers w201716, Banco de Portugal, Economics and Research Department.
  • Handle: RePEc:ptu:wpaper:w201716
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    File URL: https://www.bportugal.pt/sites/default/files/anexos/papers/wp201716.pdf
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    References listed on IDEAS

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    1. Morris, Stephen & Shin, Hyun Song, 1998. "Unique Equilibrium in a Model of Self-Fulfilling Currency Attacks," American Economic Review, American Economic Association, vol. 88(3), pages 587-597, June.
    2. Frankel, David M. & Morris, Stephen & Pauzner, Ady, 2003. "Equilibrium selection in global games with strategic complementarities," Journal of Economic Theory, Elsevier, vol. 108(1), pages 1-44, January.
    3. Russell Cooper & Hubert Kempf, 2016. "Deposit insurance and bank liquidation without commitment: Can we sleep well?," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 61(2), pages 365-392, February.
    4. Drehmann, Mathias & Tarashev, Nikola, 2013. "Measuring the systemic importance of interconnected banks," Journal of Financial Intermediation, Elsevier, vol. 22(4), pages 586-607.
    5. Gary Gorton & Andrew Metrick, 2012. "Getting Up to Speed on the Financial Crisis: A One-Weekend-Reader's Guide," Journal of Economic Literature, American Economic Association, vol. 50(1), pages 128-150, March.
    6. Stephen Morris & Hyun Song Shin, 2001. "Rethinking Multiple Equilibria in Macroeconomic Modeling," NBER Chapters,in: NBER Macroeconomics Annual 2000, Volume 15, pages 139-182 National Bureau of Economic Research, Inc.
    7. Itay Goldstein & Ady Pauzner, 2005. "Demand–Deposit Contracts and the Probability of Bank Runs," Journal of Finance, American Finance Association, vol. 60(3), pages 1293-1327, June.
    8. Russell Cooper & Hubert Kempf, 2016. "Deposit insurance and bank liquidation without commitment: Can we sleep well?," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 61(2), pages 365-392, February.
    9. repec:hal:journl:hal-01306030 is not listed on IDEAS
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    More about this item

    JEL classification:

    • D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
    • G01 - Financial Economics - - General - - - Financial Crises
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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