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Bank Competition and Financial Stability; A General Equilibrium Exposition

  • Marcella Lucchetta
  • Gianni De Nicolo

We study versions of a general equilibrium banking model with moral hazard under either constant or increasing returns to scale of the intermediation technology used by banks to screen and/or monitor borrowers. If the intermediation technology exhibits increasing returns to scale, or it is relatively efficient, then perfect competition is optimal and supports the lowest feasible level of bank risk. Conversely, if the intermediation technology exhibits constant returns to scale, or is relatively inefficient, then imperfect competition and intermediate levels of bank risks are optimal. These results are empirically relevant and carry significant implications for financial policy.

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Paper provided by International Monetary Fund in its series IMF Working Papers with number 11/295.

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Length: 39
Date of creation: 01 Dec 2011
Date of revision:
Handle: RePEc:imf:imfwpa:11/295
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  1. Dell'Ariccia, Giovanni & Marquez, Robert, 2006. "Competition among regulators and credit market integration," Journal of Financial Economics, Elsevier, vol. 79(2), pages 401-430, February.
  2. Matutes, Carmen & Vives, Xavier, 1996. "Competition for Deposits, Fragility, and Insurance," Journal of Financial Intermediation, Elsevier, vol. 5(2), pages 184-216, April.
  3. Cordella, Tito & Levy Yeyati, Eduardo, 1998. "Financial Opening, Deposit Insurance and Risk in a Model of Banking Competition," CEPR Discussion Papers 1939, C.E.P.R. Discussion Papers.
  4. Gianni De Nicolo & Marcella Lucchetta, 2009. "Financial Intermediation, Competition, and Risk; A General Equilibrium Exposition," IMF Working Papers 09/105, International Monetary Fund.
  5. Martin Cihak & Simon Wolfe & Klaus Schaeck, 2006. "Are More Competitive Banking Systems More Stable?," IMF Working Papers 06/143, International Monetary Fund.
  6. Bengt Holmstrom & Jean Tirole, 1997. "Financial Intermediation, Loanable Funds, and The Real Sector," The Quarterly Journal of Economics, Oxford University Press, vol. 112(3), pages 663-691.
  7. Xavier Freixas & Jean-Charles Rochet, 2008. "Microeconomics of Banking, 2nd Edition," MIT Press Books, The MIT Press, edition 2, volume 1, number 0262062704, June.
  8. V. Cerasi & S. Daltung, 1995. "The Optimal Size of a Bank: Costs and Benefits of Diversification," Departmental Working Papers 1995-05, Department of Economics, Management and Quantitative Methods at Università degli Studi di Milano.
  9. Elena Loukoianova & Gianni De Nicolo & John H. Boyd, 2009. "Banking Crises and Crisis Dating; Theory and Evidence," IMF Working Papers 09/141, International Monetary Fund.
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