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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.

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  • 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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    3. Adriana-Daniela CIUREL & Cristian ANGHEL, 2020. "Last Decade Analysis over the Impact of Loans & Deposits on the Romanian Economy: from Hook to Anchor," REVISTA DE MANAGEMENT COMPARAT INTERNATIONAL/REVIEW OF INTERNATIONAL COMPARATIVE MANAGEMENT, Faculty of Management, Academy of Economic Studies, Bucharest, Romania, vol. 21(2), pages 188-215, May.
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    8. 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.
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