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Banks’ optimal implementation strategies for a risk sensitive regulatory capital rule: a real options and signalling approach

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  • Kjell Bjørn Nordal

    (Norges Bank (Central Bank of Norway))

Abstract

I evaluate a bank's incentives to implement a risk sensitive regulatory capital rule and to invest in improved risk measurement. The decision making is analyzed within a real options framework where optimal policies are derived in terms of threshold levels of risk. I also evaluate the situation where exercise or non-exercise of the options to implement or invest are signals about the underlying quality of the loan portfolio. The framework is used for a numerical evaluation of banks' decision of whether to use internal rating based models for credit risk (the IRB-approach) under the new Basel accord (Basel II), where the dynamic behavior of risk is described by an Ohrnstein-Uhlenbeck process. I discuss empirical implications of the evaluation framework.

Suggested Citation

  • Kjell Bjørn Nordal, 2006. "Banks’ optimal implementation strategies for a risk sensitive regulatory capital rule: a real options and signalling approach," Working Paper 2006/12, Norges Bank.
    • Handle: RePEc:bno:worpap:2006_12
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    References listed on IDEAS

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    Keywords

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    JEL classification:

    • G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill

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