Parameterizing credit risk models with rating data
Abstract
Estimates of average default probabilities for borrowers assigned to each of a financial institution's internal credit risk rating grades are crucial inputs to portfolio credit risk models. Such models are increasingly used in setting financial institution capital structure, in internal control and compensation systems, in asset-backed security design, and are being considered for use in setting regulatory capital requirements for banks. This paper empirically examines properties of the major methods currently used to estimate average default probabilities by grade. Evidence of potential problems of bias, instability, and gaming is presented. With care, and perhaps judicious application of multiple methods, satisfactory estimates may be possible. In passing, evidence is presented about other properties of internal and rating-agency ratings.Download Info
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Paper provided by Board of Governors of the Federal Reserve System (U.S.) in its series Finance and Economics Discussion Series with number 2000-47.Length:
Date of creation: 2000
Date of revision:
Handle: RePEc:fip:fedgfe:2000-47
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Related research
Keywords: Credit ; Risk management ; Credit ratings;This paper has been announced in the following NEP Reports:
- NEP-ALL-2001-01-21 (All new papers)
- NEP-CFN-2001-02-21 (Corporate Finance)
- NEP-FMK-2000-12-19 (Financial Markets)
- NEP-IAS-2001-01-21 (Insurance Economics)
References
References listed on IDEASPlease report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Pamela Nickell & William Perraudin & Simone Varotto, 2001. "Ratings versus equity-based credit risk modelling: an empirical analysis," Bank of England working papers 132, Bank of England.
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"A comparative anatomy of credit risk models,"
Finance and Economics Discussion Series
1998-47, Board of Governors of the Federal Reserve System (U.S.).
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- Nickell, Pamela & Perraudin, William & Varotto, Simone, 2000.
"Stability of rating transitions,"
Journal of Banking & Finance,
Elsevier, vol. 24(1-2), pages 203-227, January.
- Pamela Nickell & William Perraudin & Simone Varotto, 2001. "Stability of ratings transitions," Bank of England working papers 133, Bank of England.
- Chunsheng Zhou, 1997. "Default correlation: an analytical result," Finance and Economics Discussion Series 1997-27, Board of Governors of the Federal Reserve System (U.S.).
- Duffie, Darrell & Lando, David, 2001. "Term Structures of Credit Spreads with Incomplete Accounting Information," Econometrica, Econometric Society, vol. 69(3), pages 633-64, May.
- William B. English & William R. Nelson, 1999. "Bank risk rating of business loans," Proceedings, Federal Reserve Bank of Chicago, issue May, pages 145-176.
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Citations
Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.Cited by:
- Arnoud W. A. Boot & Todd T. Milbourn & Anjolein Schmeits, 2006.
"Credit Ratings as Coordination Mechanisms,"
Review of Financial Studies,
Society for Financial Studies, vol. 19(1), pages 81-118.
- Arnoud W. A. Boot & Todd T. Milbourn, 2002. "Credit Ratings as Coordination Mechanisms," William Davidson Institute Working Papers Series 457, William Davidson Institute at the University of Michigan.
- Boot, Arnoud W A & Milbourn, Todd, 2002. "Credit Ratings as Coordination Mechanism," CEPR Discussion Papers 3331, C.E.P.R. Discussion Papers.
- Douglas D. Evanoff & Larry D. Wall, 2000.
"Subordinated debt and bank capital reform,"
Working Paper Series
WP-00-7, Federal Reserve Bank of Chicago.
- Douglas D. Evanoff & Larry D. Wall, 2000. "Subordinated debt and bank capital reform," Working Paper 2000-24, Federal Reserve Bank of Atlanta.
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