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Evidence of non-Markovian behavior in the process of bank rating migrations

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  • José E.Gómez González

  • Nicholas M. Kiefer

Abstract

This paper estimates transition matrices for the ratings on financial insti-tutions, using an unusually informative data set. We show that the process of rating migration exhibits significant non-Markovian behavior, in the sense that the transition intensities are affected by macroeconomic and bank spe- cific variables. We illustrate how the use of a continuous time framework may improve the estimation of the transition probabilities. However, the time homogeneity assumption, frequently done in economic applications, does not hold, even for short time intervals. Thus, the information provided by migrations alone is not enough to forecast the future behavior of ratings. The stage of the business cycle should be taken into account, and individual characteristics of banks must be considered as well.

Suggested Citation

  • José E.Gómez González & Nicholas M. Kiefer, 2007. "Evidence of non-Markovian behavior in the process of bank rating migrations," Borradores de Economia 448, Banco de la Republica de Colombia.
    • Handle: RePEc:bdr:borrec:448
    DOI: 10.32468/be.448
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    Cited by:

    1. Camilla Ferretti & Giampaolo Gabbi & Piero Ganugi & Federica Sist & Pietro Vozzella, 2019. "Credit Risk Migration and Economic Cycles," Risks, MDPI, vol. 7(4), pages 1-18, October.
    2. Camilla Ferretti & Giampaolo Gabbi & Piero Ganugi & Pietro Vozzella, 2016. "Rating Trajectories and Credit Risk Migration: Evidence for SMEs," DISCE - Quaderni del Dipartimento di Scienze Economiche e Sociali dises1615, Università Cattolica del Sacro Cuore, Dipartimenti e Istituti di Scienze Economiche (DISCE).
    3. Gómez-González, José Eduardo & Hinojosa, Inés Paola Orozco, 2010. "Estimation of conditional time-homogeneous credit quality transition matrices," Economic Modelling, Elsevier, vol. 27(1), pages 89-96, January.
    4. Jose Eduardo G�mez & Paola Morales Acevedo & Fernando Pineda & Nancy Zamudio, 2007. "An Alternative Methodology for Estimating Credit Quality Transition Matrices," Borradores de Economia 4395, Banco de la Republica.

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    JEL classification:

    • C4 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: Special Topics
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G23 - Financial Economics - - Financial Institutions and Services - - - Non-bank Financial Institutions; Financial Instruments; Institutional Investors
    • G38 - Financial Economics - - Corporate Finance and Governance - - - Government Policy and Regulation

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