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A new approach to credit ratings

Author

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  • Pertaia, Giorgi
  • Prokhorov, Artem
  • Uryasev, Stan

Abstract

Credit ratings are fundamental in assessing the credit risk of a security or debtor. The failure of the Collateralized Debt Obligation (CDO) ratings during the financial crisis of 2007-2008 and the massive undervaluation of corporate risk leading up to the crisis resulted in a review of rating approaches. Yet the fundamental metric that guides the construction of credit ratings has not changed. We study the inadequacies of the old metric in simple models of investment and in structured finance portfolio optimization tasks, and we propose a new methodology based on a buffered probability of exceedance. The new approach offers a conservative risk assessment, with substantial conceptual and computational benefits. We illustrate the new approach using several examples and report the results of a structuring step-up CDO case study, with details available in an online Supplement.

Suggested Citation

  • Pertaia, Giorgi & Prokhorov, Artem & Uryasev, Stan, 2022. "A new approach to credit ratings," Journal of Banking & Finance, Elsevier, vol. 140(C).
    • Handle: RePEc:eee:jbfina:v:140:y:2022:i:c:s0378426621000558
    DOI: 10.1016/j.jbankfin.2021.106097
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    References listed on IDEAS

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    1. Mafusalov, Alexander & Shapiro, Alexander & Uryasev, Stan, 2018. "Estimation and asymptotics for buffered probability of exceedance," European Journal of Operational Research, Elsevier, vol. 270(3), pages 826-836.
    2. Patrick Bolton & Xavier Freixas & Joel Shapiro, 2012. "The Credit Ratings Game," Journal of Finance, American Finance Association, vol. 67(1), pages 85-112, February.
    3. Cotter, John & Dowd, Kevin, 2006. "Extreme spectral risk measures: An application to futures clearinghouse margin requirements," Journal of Banking & Finance, Elsevier, vol. 30(12), pages 3469-3485, December.
    4. Mark Dilly & Thomas Mählmann, 2016. "Is There a "Boom Bias" in Agency Ratings?," Review of Finance, European Finance Association, vol. 20(3), pages 979-1011.
    5. Jie (Jack) He & Jun (Qj) Qian & Philip E. Strahan, 2012. "Are All Ratings Created Equal? The Impact of Issuer Size on the Pricing of Mortgage-Backed Securities," Journal of Finance, American Finance Association, vol. 67(6), pages 2097-2137, December.
    6. Gourieroux, C. & Laurent, J. P. & Scaillet, O., 2000. "Sensitivity analysis of Values at Risk," Journal of Empirical Finance, Elsevier, vol. 7(3-4), pages 225-245, November.
    7. Amato, Jeffery D. & Furfine, Craig H., 2004. "Are credit ratings procyclical?," Journal of Banking & Finance, Elsevier, vol. 28(11), pages 2641-2677, November.
    8. Joshua Coval & Jakub Jurek & Erik Stafford, 2009. "The Economics of Structured Finance," Journal of Economic Perspectives, American Economic Association, vol. 23(1), pages 3-25, Winter.
    9. Ibragimov, Rustam & Prokhorov, Artem, 2016. "Heavy tails and copulas: Limits of diversification revisited," Economics Letters, Elsevier, vol. 149(C), pages 102-107.
    10. O. Scaillet, 2004. "Nonparametric Estimation and Sensitivity Analysis of Expected Shortfall," Mathematical Finance, Wiley Blackwell, vol. 14(1), pages 115-129, January.
    11. 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.
    12. Adam Ashcraft & Paul Goldsmith-Pinkham & Peter Hull & James Vickery, 2011. "Credit Ratings and Security Prices in the Subprime MBS Market," American Economic Review, American Economic Association, vol. 101(3), pages 115-119, May.
    13. Michal Wojewodzki & Winnie P.H. Poon & Jianfu Shen, 2018. "The role of credit ratings on capital structure and its speed of adjustment: an international study," The European Journal of Finance, Taylor & Francis Journals, vol. 24(9), pages 735-760, June.
    14. David M. Zimmer, 2012. "The Role of Copulas in the Housing Crisis," The Review of Economics and Statistics, MIT Press, vol. 94(2), pages 607-620, May.
    15. Cotter, John & Dowd, Kevin, 2006. "Spectral Risk Measures with an Application to Futures Clearinghouse Variation Margin Requirements," MPRA Paper 3495, University Library of Munich, Germany.
    16. Alan F. Karr, 1983. "Extreme Points of Certain Sets of Probability Measures, with Applications," Mathematics of Operations Research, INFORMS, vol. 8(1), pages 74-85, February.
    17. Justin R. Davis & Stan Uryasev, 2016. "Analysis of tropical storm damage using buffered probability of exceedance," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 83(1), pages 465-483, August.
    18. Bar-Isaac, Heski & Shapiro, Joel, 2013. "Ratings quality over the business cycle," Journal of Financial Economics, Elsevier, vol. 108(1), pages 62-78.
    19. Rustam Ibragimov, 2009. "Portfolio diversification and value at risk under thick-tailedness," Quantitative Finance, Taylor & Francis Journals, vol. 9(5), pages 565-580.
    20. Aysun Alp, 2013. "Structural Shifts in Credit Rating Standards," Journal of Finance, American Finance Association, vol. 68(6), pages 2435-2470, December.
    21. Jean Paul Rabanal & Olga A Rud, 2018. "Does Competition Affect Truth Telling? An Experiment with Rating Agencies," Review of Finance, European Finance Association, vol. 22(4), pages 1581-1604.
    22. Kisgen, Darren J., 2019. "The impact of credit ratings on corporate behavior: Evidence from Moody's adjustments," Journal of Corporate Finance, Elsevier, vol. 58(C), pages 567-582.
    23. Ramin P. Baghai & Henri Servaes & Ane Tamayo, 2014. "Have Rating Agencies Become More Conservative? Implications for Capital Structure and Debt Pricing," Journal of Finance, American Finance Association, vol. 69(5), pages 1961-2005, October.
    24. Darren J. Kisgen, 2006. "Credit Ratings and Capital Structure," Journal of Finance, American Finance Association, vol. 61(3), pages 1035-1072, June.
    25. Chi-Hsiou D. Hung & Anurag Banerjee & Qingrui Meng, 2017. "Corporate financing and anticipated credit rating changes," Review of Quantitative Finance and Accounting, Springer, vol. 48(4), pages 893-915, May.
    26. Rustam Ibragimov & Artem Prokhorov, 2017. "Heavy Tails and Copulas:Topics in Dependence Modelling in Economics and Finance," World Scientific Books, World Scientific Publishing Co. Pte. Ltd., number 9644, September.
    27. Rockafellar, R.T. & Royset, J.O., 2010. "On buffered failure probability in design and optimization of structures," Reliability Engineering and System Safety, Elsevier, vol. 95(5), pages 499-510.
    28. 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.
    29. Opp, Christian C. & Opp, Marcus M. & Harris, Milton, 2013. "Rating agencies in the face of regulation," Journal of Financial Economics, Elsevier, vol. 108(1), pages 46-61.
    30. Rockafellar, R. Tyrrell & Uryasev, Stanislav, 2002. "Conditional value-at-risk for general loss distributions," Journal of Banking & Finance, Elsevier, vol. 26(7), pages 1443-1471, July.
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    2. Chen, Dangxing & Ye, Jiahui & Ye, Weicheng, 2023. "Interpretable selective learning in credit risk," Research in International Business and Finance, Elsevier, vol. 65(C).

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