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What makes a bank risky? Insights from the optimal capital structure of banks

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  • Koziol, Christian
  • Lawrenz, Jochen

Abstract

Assessing the risk of bank failures is the paramount concern of bank regulation. This paper argues that in order to assess the default risk of a bank, it is important to consider its financing decisions as an endogenous dynamic process. We provide a continuous-time model, where banks choose the deposit volume in order to trade off the benefits of earning deposit premiums against the costs that occur at future capital structure adjustments. The bank's asset value may suffer from shocks and follows a jump-diffusion process. Our main finding is that the dynamic endogenous financing decision introduces an important self-regulation mechanism, where it is crucial to distinguish between the diffusion risk and the jump risk component.

Suggested Citation

  • Koziol, Christian & Lawrenz, Jochen, 2009. "What makes a bank risky? Insights from the optimal capital structure of banks," Journal of Banking & Finance, Elsevier, vol. 33(5), pages 861-873, May.
  • Handle: RePEc:eee:jbfina:v:33:y:2009:i:5:p:861-873
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Swamy, Vighneswara, 2014. "Modelling the Impact of New Capital Regulations on Bank Profitability," MPRA Paper 58298, University Library of Munich, Germany.
    2. Iulia Iuga, 2011. "Comparative Study On The Evolution Of Loans Anddeposits Between The Romanian Bank For Development (Brd) - Groupe Societe Generale And The Romanian Banking System," Annales Universitatis Apulensis Series Oeconomica, Faculty of Sciences, "1 Decembrie 1918" University, Alba Iulia, vol. 2(13), pages 1-27.
    3. Stig Helberg & Snorre Lindset, 2013. "Bank Debt Regulations Implications for Bank Capital and Bond Risk," Working Paper Series 14813, Department of Economics, Norwegian University of Science and Technology.
    4. Shim, Jeungbo, 2010. "Capital-based regulation, portfolio risk and capital determination: Empirical evidence from the US property-liability insurers," Journal of Banking & Finance, Elsevier, vol. 34(10), pages 2450-2461, October.
    5. Helberg, Stig & Lindset, Snorre, 2014. "How do asset encumbrance and debt regulations affect bank capital and bond risk?," Journal of Banking & Finance, Elsevier, vol. 44(C), pages 39-54.
    6. Koziol, Christian & Lawrenz, Jochen, 2012. "Contingent convertibles. Solving or seeding the next banking crisis?," Journal of Banking & Finance, Elsevier, vol. 36(1), pages 90-104.
    7. Glass, J. Colin & McKillop, Donal G. & Rasaratnam, Syamarlah, 2010. "Irish credit unions: Investigating performance determinants and the opportunity cost of regulatory compliance," Journal of Banking & Finance, Elsevier, vol. 34(1), pages 67-76, January.

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