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Regulation, Supervision, and Bank Risk-Taking

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Abstract

This paper presents a model of the interaction between a bank and a supervisor. The bank privately chooses the risk of its investment portfolio and the supervisor collects nonverifiable information on the future solvency of the bank and, based on of this information, may decide on its early liquidation. The paper characterizes the liquidation decision of the supervisor and the risk-taking decision of the bank. In line with recent empirical literature, the paper shows that supervision is effective in ameliorating the bank’s risk-shifting incentives, and that a tougher supervisor leads to lower risk-taking. It also shows that higher noise in the supervisory information may be conducive to lower risk-taking, but that it always reduces welfare.

Suggested Citation

  • Rafael Repullo, 2025. "Regulation, Supervision, and Bank Risk-Taking," Working Papers wp2025_2506, CEMFI.
    • Handle: RePEc:cmf:wpaper:wp2025_2506
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    References listed on IDEAS

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    1. Mailath George J. & Mester Loretta J., 1994. "A Positive Analysis of Bank Closure," Journal of Financial Intermediation, Elsevier, vol. 3(3), pages 272-299, June.
    2. Repullo, Rafael, 2004. "Capital requirements, market power, and risk-taking in banking," Journal of Financial Intermediation, Elsevier, vol. 13(2), pages 156-182, April.
    3. Mathias Dewatripont & Jean Tirole, 1994. "The prudential regulation of banks," ULB Institutional Repository 2013/9539, ULB -- Universite Libre de Bruxelles.
    4. Miguel Boucinha & Carlo Altavilla & Frank Smets & José-Luis Peydró, 2019. "Banking Supervision, Monetary Policy and Risk-Taking: Big Data Evidence from 15 Credit Registers," Working Papers 1137, Barcelona School of Economics.
    5. Beverly Hirtle & Anna Kovner & Matthew Plosser, 2020. "The Impact of Supervision on Bank Performance," Journal of Finance, American Finance Association, vol. 75(5), pages 2765-2808, October.
    6. Xavier Vives, 2016. "Competition and Stability in Banking: The Role of Regulation and Competition Policy," Economics Books, Princeton University Press, edition 1, number 10741.
    7. John Kandrac & Bernd Schlusche, 2021. "The Effect of Bank Supervision and Examination on Risk Taking: Evidence from a Natural Experiment," The Review of Financial Studies, Society for Financial Studies, vol. 34(6), pages 3181-3212.
    8. Sumit Agarwal & Bernardo C. Morais & Amit Seru & Kelly Shue, 2024. "Noisy Experts? Discretion in Regulation," NBER Working Papers 32344, National Bureau of Economic Research, Inc.
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    More about this item

    Keywords

    Bank risk-taking; bank supervision; bank regulation; capital requirements; deposit insurance; bank resolution; bank liquidation.;
    All these keywords.

    JEL classification:

    • 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
    • D02 - Microeconomics - - General - - - Institutions: Design, Formation, Operations, and Impact

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