Did Credit Rating Agencies Make Unbiased Assumptions on CDOs?
We compare key CDO assumptions from two departments within the same rating agency but with different financial incentives. Assumptions made by the ratings division are more favorable than those by the surveillance department. The differences are not explained by collateral switching during the ramp-up period, a long time gap between reports, nor the collapse of the CDO market in 2007 Additionally, CDOs rated with more favorable assumptions by the ratings group were more likely to be subsequently downgraded. As the useful signals from the surveillance group were seemingly ignored, these findings suggest rating agencies bias towards high ratings.
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Volume (Year): 101 (2011)
Issue (Month): 3 (May)
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Please 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.:
- Ashcraft, A. & Goldsmith-Pinkham, P. & Vickery, J., 2010.
"MBS Ratings and the Mortgage Credit Boom,"
2010-89S, Tilburg University, Center for Economic Research.
- Vasiliki Skreta & Laura Veldkamp, 2009.
"Ratings Shopping and Asset Complexity: A Theory of Ratings Inflation,"
NBER Working Papers
14761, National Bureau of Economic Research, Inc.
- Skreta, Vasiliki & Veldkamp, Laura, 2009. "Ratings shopping and asset complexity: A theory of ratings inflation," Journal of Monetary Economics, Elsevier, vol. 56(5), pages 678-695, July.
- Vasiliki Skreta & Laura Veldkamp, 2008. "Ratings Shopping and Asset Complexity: A Theory of Ratings Inflation," Working Papers 08-28, New York University, Leonard N. Stern School of Business, Department of Economics.
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