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On the Relationship between Market Power and Bank Risk Taking

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  • Kaniska Dam
  • Marc Escrihuela-Villar
  • Santiago Sanchez-Pages

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Abstract

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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Bibliographic Info

Paper provided by Edinburgh School of Economics, University of Edinburgh in its series ESE Discussion Papers with number 187.

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Length: 33
Date of creation: Feb 2009
Date of revision:
Handle: RePEc:edn:esedps:187

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  1. Albert Banal-Estañol & Marco Ottaviani, 2006. "Mergers with Product Market Risk," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 15(3), pages 577-608, 09.
  2. 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.
  3. 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.
  4. Demirguc-Kunt, Asli & Huizinga, Harry, 2004. "Market discipline and deposit insurance," Journal of Monetary Economics, Elsevier, vol. 51(2), pages 375-399, March.
  5. Douglas W. Diamond & Philip H. Dybvig, 2000. "Bank runs, deposit insurance, and liquidity," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Win, pages 14-23.
  6. Brito, Duarte, 2003. "Preemptive mergers under spatial competition," International Journal of Industrial Organization, Elsevier, vol. 21(10), pages 1601-1622, December.
  7. Matutes, Carmen & Vives, Xavier, 1996. "Competition for Deposits, Fragility, and Insurance," Journal of Financial Intermediation, Elsevier, vol. 5(2), pages 184-216, April.
  8. Repullo, Rafael, 2003. "Capital Requirements, Market Power and Risk-Taking in Banking," CEPR Discussion Papers 3721, C.E.P.R. Discussion Papers.
  9. Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring.
  10. Perotti, Enrico C. & Suarez, Javier, 2002. "Last bank standing: What do I gain if you fail?," European Economic Review, Elsevier, vol. 46(9), pages 1599-1622, October.
  11. 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.
  12. 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.
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