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On the Relationship between Market Power and Bank Risk Taking

  • Dam, Kaniska
  • Escrihuela-Villar, Marc
  • Sánchez-Pagés, Santiago

We analyse risk-taking behaviour of banks in the context of spatial competition. Banks mobilise unsecured deposits by offering deposit rates, which they invest either in a prudent or a gambling asset. Limited liability along with high return of a successful gamble induce moral hazard at the bank level. We show that when the market power is low, banks invest in the gambling asset. On the other hand, for sufficiently high levels of market power, all banks choose the prudent asset to invest in. We further show that a merger of two neighboring banks increases the likelihood of prudent behaviour. Finally, introduction of a deposit insurance scheme exacerbates banks’ moral hazard problem.

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Paper provided by Scottish Institute for Research in Economics (SIRE) in its series SIRE Discussion Papers with number 2008-26.

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Date of creation: 2008
Date of revision:
Handle: RePEc:edn:sirdps:39
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  1. Matutes, Carmen & Vives, Xavier, 1996. "Competition for Deposits, Fragility, and Insurance," Journal of Financial Intermediation, Elsevier, vol. 5(2), pages 184-216, April.
  2. Chiappori, Pierre-Andre & Perez-Castrillo, David & Verdier, Thierry, 1995. "Spatial competition in the banking system: Localization, cross subsidies and the regulation of deposit rates," European Economic Review, Elsevier, vol. 39(5), pages 889-918, May.
  3. Repullo, Rafael, 2004. "Capital requirements, market power, and risk-taking in banking," Journal of Financial Intermediation, Elsevier, vol. 13(2), pages 156-182, April.
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  8. Keeley, Michael C, 1990. "Deposit Insurance, Risk, and Market Power in Banking," American Economic Review, American Economic Association, vol. 80(5), pages 1183-1200, December.
  9. Levy, David T & Reitzes, James D, 1992. "Anticompetitive Effects of Mergers in Markets with Localized Competition," Journal of Law, Economics and Organization, Oxford University Press, vol. 8(2), pages 427-40, April.
  10. John H. Boyd & Gianni De Nicolã, 2005. "The Theory of Bank Risk Taking and Competition Revisited," Journal of Finance, American Finance Association, vol. 60(3), pages 1329-1343, 06.
  11. Brito, Duarte, 2003. "Preemptive mergers under spatial competition," International Journal of Industrial Organization, Elsevier, vol. 21(10), pages 1601-1622, December.
  12. Herbert L. Baer & Elijah Brewer, 1986. "Uninsured deposits as a source of market discipline: some new evidence," Economic Perspectives, Federal Reserve Bank of Chicago, issue Sep, pages 23-31.
  13. Asli Demirgüç-Kunt & Enrica Detragiache, 1998. "The Determinants of Banking Crises in Developing and Developed Countries," IMF Staff Papers, Palgrave Macmillan, vol. 45(1), pages 81-109, March.
  14. Raymond Deneckere & Carl Davidson, 1985. "Incentives to Form Coalitions with Bertrand Competition," RAND Journal of Economics, The RAND Corporation, vol. 16(4), pages 473-486, Winter.
  15. Demirguc-Kunt, Asli & Huizinga, Harry, 2004. "Market discipline and deposit insurance," Journal of Monetary Economics, Elsevier, vol. 51(2), pages 375-399, March.
  16. Kevin C. Murdock & Thomas F. Hellmann & Joseph E. Stiglitz, 2000. "Liberalization, Moral Hazard in Banking, and Prudential Regulation: Are Capital Requirements Enough?," American Economic Review, American Economic Association, vol. 90(1), pages 147-165, March.
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