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| Avoiding the Rating Bounce: Why rating agencies are slow to react to new information by Gunter Löffler of the University of Ulm May 2004 Abstract: Rating agencies state that they take a rating action only when it is unlikely to be reversed shortly afterwards. Using a formal representation of the rating process, I show that such a policy provides a good explanation for the empirical evidence: rating changes relatively seldom occur, they exhibit serial dependence, and they lag changes in the issuers' default risk. In terms of informational losses, avoiding rating reversals can be more harmful than monitoring credit quality only twice per year. Keywords: credit rating, rating agencies, conservatism, rating migration. Published in: Journal of Economic Behavior & Organization, Vol. 56, No. 3, (March 2005), pp. 365-381. Books Referenced in this Paper: (what is this?)
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