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Procyclicality and Bank Portfolio Risk Level under a Constant Leverage Ratio

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Author Info

  • Olivier Bruno

    (GREDEG CNRS
    University of Nice Sophia Antipolis, France)

  • Alexandra Girod

    (GREDEG CNRS)

Abstract

We investigate the impact the risk sensitive regulatory ratio may have on banks' risk taking behaviours during the business cycle. We show that the risk sensitivity of capital requirements introduce by Basel II adds either an "equity surplus" or an "equity deficit" on a bank that owns a fixed capital endowment and a constant leverage ratio. Depending on the magnitude of cyclical variations into requirements, the "surplus" may be exploited by the bank to increase its value toward the selection of a riskier asset or the "deficit" may restrict the bank to opt for a less risky asset. Whether the optimal asset risk level swings among classes of risk through the cycle, the risk level of bank's portfolio may increase during economic upturns, or decrease in downturns, leading to a rise in financial fragility or a "fly to quality" phenomenon.

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File URL: http://www.gredeg.cnrs.fr/working-papers/GREDEG-WP-2013-35.pdf
File Function: First version, 2013
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Bibliographic Info

Paper provided by Groupe de REcherche en Droit, Economie, Gestion (GREDEG CNRS), University of Nice Sophia Antipolis in its series GREDEG Working Papers with number 2013-35.

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Length: 25 pages
Date of creation: Oct 2013
Date of revision:
Handle: RePEc:gre:wpaper:2013-35

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Related research

Keywords: Bank capital; Basel capital accord; risk incentive;

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  1. Tobias Adrian & Hyun Song Shin, 2010. "The changing nature of financial intermediation and the financial crisis of 2007-09," Staff Reports 439, Federal Reserve Bank of New York.
  2. Jeitschko, Thomas D. & Jeung, Shin Dong, 2005. "Incentives for risk-taking in banking - A unified approach," Journal of Banking & Finance, Elsevier, vol. 29(3), pages 759-777, March.
  3. Douglas W. Diamond & Raghuram G. Rajan, 1999. "A Theory of Bank Capital," NBER Working Papers 7431, National Bureau of Economic Research, Inc.
  4. Chiara Pederzoli & Costanza Torricelli & Dimitrios P. Tsomocos, 2008. "Rating systems, procyclicality and Basel II: an evaluation in a general equilibrium framework," OFRC Working Papers Series 2008fe27, Oxford Financial Research Centre.
  5. Tobias Adrian & Hyun Song Shin, 2008. "Liquidity and leverage," Staff Reports 328, Federal Reserve Bank of New York.
  6. Repullo, Rafael & Suarez, Javier, 2004. "Loan pricing under Basel capital requirements," Journal of Financial Intermediation, Elsevier, vol. 13(4), pages 496-521, October.
  7. Heid, Frank, 2007. "The cyclical effects of the Basel II capital requirements," Journal of Banking & Finance, Elsevier, vol. 31(12), pages 3885-3900, December.
  8. HyunSong Shin, 2009. "Securitisation and Financial Stability," Economic Journal, Royal Economic Society, vol. 119(536), pages 309-332, 03.
  9. Hayne E. Leland and Klaus Bjerre Toft., 1995. "Optimal Capital Structure, Endogenous Bankruptcy, and the Term Structure of Credit Spreads," Research Program in Finance Working Papers RPF-259, University of California at Berkeley.
  10. Estrella, Arturo, 2004. "The cyclical behavior of optimal bank capital," Journal of Banking & Finance, Elsevier, vol. 28(6), pages 1469-1498, June.
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