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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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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.

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Bibliographic Info

Paper provided by Norges Bank in its series Working Paper with number 2006/12.

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Length: 36 pages
Date of creation: 11 Dec 2006
Date of revision:
Handle: RePEc:bno:worpap:2006_12

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Keywords: Risk measurement; capital structure; real options; Basel II;

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  1. Myers, Stewart C., 1984. "Capital structure puzzle," Working papers 1548-84., Massachusetts Institute of Technology (MIT), Sloan School of Management.
  2. Jeremy C. Stein, 2002. "Information Production and Capital Allocation: Decentralized versus Hierarchical Firms," Journal of Finance, American Finance Association, vol. 57(5), pages 1891-1921, October.
  3. Stewart C. Myers, 1984. "Capital Structure Puzzle," NBER Working Papers 1393, National Bureau of Economic Research, Inc.
  4. Jensen, Michael C, 1986. "Agency Costs of Free Cash Flow, Corporate Finance, and Takeovers," American Economic Review, American Economic Association, vol. 76(2), pages 323-29, May.
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  6. Berger, Allen N. & Herring, Richard J. & Szego, Giorgio P., 1995. "The role of capital in financial institutions," Journal of Banking & Finance, Elsevier, vol. 19(3-4), pages 393-430, June.
  7. Acharya, Sankarshan, 1988. " A Generalized Econometric Model and Tests of a Signalling Hypothesis with Two Discrete Signals," Journal of Finance, American Finance Association, vol. 43(2), pages 413-29, June.
  8. Myers, Stewart C, 1984. " The Capital Structure Puzzle," Journal of Finance, American Finance Association, vol. 39(3), pages 575-92, July.
  9. Schwartz, Eduardo S, 1997. " The Stochastic Behavior of Commodity Prices: Implications for Valuation and Hedging," Journal of Finance, American Finance Association, vol. 52(3), pages 923-73, July.
  10. Nordal, Kjell B., 2001. "Country risk, country risk indices and valuation of FDI: a real options approach," Emerging Markets Review, Elsevier, vol. 2(3), pages 197-217, September.
  11. Allen N. Berger & Gregory F. Udell, 2001. "Small business credit availability and relationship lending: the importance of bank organizational structure," Finance and Economics Discussion Series 2001-36, Board of Governors of the Federal Reserve System (U.S.).
  12. Miller, Merton H., 1995. "Do the M & M propositions apply to banks?," Journal of Banking & Finance, Elsevier, vol. 19(3-4), pages 483-489, June.
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