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Regulatory capital for market and credit risk interaction: is current regulation always conservative?

Author

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  • Breuer, Thomas
  • Jandacka, Martin
  • Rheinberger, Klaus
  • Summer, Martin

Abstract

In the work of the Basel Committee there has been a tradition of distinguishing market from credit risk and to treat both categories independently in the calculation of risk capital. In practice positions in a portfolio depend simultaneously on both market and credit risk factors. In this case, an approximation of the portfolio value function splitting value changes into a pure market risk plus pure credit risk component can lead to underestimation of risk. It can therefore not be argued that the current regulatory approach would always be conservative from a risk assessment perspective. We discuss this fact in the context of foreign currency loans and argue that under the traditional regulatory approach the true risk of a portfolio of foreign currency loans would be significantly underestimated.

Suggested Citation

  • Breuer, Thomas & Jandacka, Martin & Rheinberger, Klaus & Summer, Martin, 2008. "Regulatory capital for market and credit risk interaction: is current regulation always conservative?," Discussion Paper Series 2: Banking and Financial Studies 2008,14, Deutsche Bundesbank.
  • Handle: RePEc:zbw:bubdp2:7324
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    References listed on IDEAS

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    1. Barnhill Jr., Theodore M. & Maxwell, William F., 2002. "Modeling correlated market and credit risk in fixed income portfolios," Journal of Banking & Finance, Elsevier, vol. 26(2-3), pages 347-374, March.
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    5. Acerbi, Carlo & Tasche, Dirk, 2002. "On the coherence of expected shortfall," Journal of Banking & Finance, Elsevier, vol. 26(7), pages 1487-1503, July.
    6. Merton, Robert C, 1974. "On the Pricing of Corporate Debt: The Risk Structure of Interest Rates," Journal of Finance, American Finance Association, vol. 29(2), pages 449-470, May.
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    Cited by:

    1. Sokolov, Yuri, 2009. "Interaction between market and credit risk: Focus on the endogeneity of aggregate risk," MPRA Paper 18245, University Library of Munich, Germany.
    2. Sokolov, Yuri, 2012. "Modeling risk in a dynamically changing world: from association to causation," MPRA Paper 40096, University Library of Munich, Germany.
    3. Miloš Božović & Branko Urošević & Boško Živković, 2009. "On The Spillover Of Exchangerate Risk Into Default Risk," Economic Annals, Faculty of Economics, University of Belgrade, vol. 54(183), pages 32-55, October -.

    More about this item

    Keywords

    integrated analysis of market and credit risk; risk management; foreign currency loans; banking regulation;

    JEL classification:

    • C15 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Statistical Simulation Methods: General
    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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