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Rating targeting and the confidence levels implicit in bank capital

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Author Info

  • Jokivuolle , Esa

    ()
    (Bank of Finland Research)

  • Peura , Samu

    (Sampo Bank)

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    Abstract

    The solvency standards implicit in bank capital levels, as reported eg in Jackson et al (2002), are much higher than those required for top ratings, if standard single period economic capital models are taken se-riously. We explain this excess capital puzzle by forward looking rating targeting behaviour by banks, which aims at maintaining rating above a minimum target in future periods. We calibrate to data on actual bank capital the confidence level used by the median US AA rated bank to maintain at least a single A rating. The calibrated confidence level is in line with the historical probability of an AA rated bank to be downgraded below A.

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    File URL: http://www.suomenpankki.fi/en/julkaisut/tutkimukset/keskustelualoitteet/Documents/0627netti.pdf
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    Bibliographic Info

    Paper provided by Bank of Finland in its series Research Discussion Papers with number 27/2006.

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    Length: 27 pages
    Date of creation: 10 Dec 2006
    Date of revision:
    Handle: RePEc:hhs:bofrdp:2006_027

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    Postal: Bank of Finland, P.O. Box 160, FI-00101 Helsinki, Finland
    Web page: http://www.suomenpankki.fi/en/
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    Related research

    Keywords: bank capital; credit rating; value-at-risk; economic capital; capital structure;

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    1. Jokipii, Terhi & Milne , Alistair, 2006. "The cyclical behaviour of European bank capital buffers," Research Discussion Papers 17/2006, Bank of Finland.
    2. Ayuso, Juan & Perez, Daniel & Saurina, Jesus, 2004. "Are capital buffers pro-cyclical?: Evidence from Spanish panel data," Journal of Financial Intermediation, Elsevier, vol. 13(2), pages 249-264, April.
    3. Lindquist, Kjersti-Gro, 2004. "Banks' buffer capital: how important is risk," Journal of International Money and Finance, Elsevier, vol. 23(3), pages 493-513, April.
    4. Jacob A. Bikker & Paul A. J. Metzemakers, 2007. "Is Bank Capital Procyclical? A Cross-Country Analysis," Credit and Capital Markets, Credit and Capital Markets, vol. 40(2), pages 225-264.
    5. Anil Bangia & Francis X. Diebold & Til Schuermann, 2000. "Ratings Migration and the Business Cycle, With Application to Credit Portfolio Stress Testing," Center for Financial Institutions Working Papers 00-26, Wharton School Center for Financial Institutions, University of Pennsylvania.
    6. Arnoud W.A. Boot & Todd T. Milbourn, 2002. "Credit Ratings as Coordination Mechanisms," Tinbergen Institute Discussion Papers 02-058/2, Tinbergen Institute.
    7. Altman, Edward I. & Rijken, Herbert A., 2004. "How rating agencies achieve rating stability," Journal of Banking & Finance, Elsevier, vol. 28(11), pages 2679-2714, November.
    8. Gordy, Michael B. & Howells, Bradley, 2006. "Procyclicality in Basel II: Can we treat the disease without killing the patient?," Journal of Financial Intermediation, Elsevier, vol. 15(3), pages 395-417, July.
    9. Patricia Jackson & William Perraudin & Victoria Saporta, 2002. "Regulatory and 'economic' solvency standards for internationally active banks," Bank of England working papers 161, Bank of England.
    10. Peura, Samu & Jokivuolle, Esa, 2004. "Simulation based stress tests of banks' regulatory capital adequacy," Journal of Banking & Finance, Elsevier, vol. 28(8), pages 1801-1824, August.
    11. Abel Elizalde & Rafael Repullo, 2004. "Economic And Regulatory Capital. What Is The Difference?," Working Papers wp2004_0422, CEMFI.
    12. Nickell, Pamela & Perraudin, William & Varotto, Simone, 2000. "Stability of rating transitions," Journal of Banking & Finance, Elsevier, vol. 24(1-2), pages 203-227, January.
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