Competition in the Credit Rating Industry: Benefits for Investors and Issuers

Stefan Morkoetter, Roman Stebler () and Simone Westerfeld ()

No 1505, Working Papers on Finance from University of St. Gallen, School of Finance

Abstract: We empirically investigate the benefits of multiple ratings not only at issuance of debt instruments but also during the subsequent monitoring phase. Using a record of monthly credit rating migration data on all U.S. residential mortgage-backed securities rated by Standard & Poor's, Moody's, and Fitch between 1985 and 2012 (154'600 tranches), our results provide empirical evidence that rating agencies put more effort in rating and outlook revisions when tranches have assigned multiple ratings. Furthermore, we demonstrate that in the case of multiple ratings, agencies do a better job in discriminating tranches with respect to default risk. On the downside, we observe a shift in collateral towards senior tranches and incentives for issuers to engage in rating shopping activities, but find no evidence that rating agencies exploit such behavior to attract more rating business. Our results contribute to the literature on information production of credit ratings and extend the perspective to the monitoring period after issuance.

Keywords: Multiple Ratings; Information Production; Structured Finance; Rating Agencies; Residential Mortgage-backed Securities; Rating Shopping (search for similar items in EconPapers)
JEL-codes: G14 G21 G24 (search for similar items in EconPapers)
Pages: 50 pages
Date: 2015-01, Revised 2016-02
New Economics Papers: this item is included in nep-ure
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Citations: View citations in EconPapers (4)

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Related works:
Journal Article: Competition in the credit rating Industry: Benefits for investors and issuers (2017)
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Persistent link: https://EconPapers.repec.org/RePEc:usg:sfwpfi:2015:05

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