Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/152510
Authors: 
Gropp, Reint
Richards, Anthony J.
Year of Publication: 
2001
Series/Report no.: 
ECB Working Paper 76
Abstract: 
The recent consultative papers by the Basel Committee suggest an explicit role for external rating agencies in the assessment of the credit risk of banks' assets. In this context, an assessment of the information contained in credit ratings is important. We address this issue via an event study of rating change announcements by leading international rating agencies, focussing on a sample of European banks. We find no evidence of announcement effects on bond prices. We are largely able to exclude lack of liquidity as an explanation for this puzzling result and suggest some alternatives, such as 'too-big-to-fail.' For equity prices, we find strong effects of unexpected ratings changes and confirm prior evidence that stock prices may react very differently to ratings downgrades, depending on the underlying reason. Overall, our results suggest that ratings agencies may perform a useful role in summarising and obtaining non-public information on banks, at least for stockholders.
JEL: 
G21
G14
G18
Document Type: 
Working Paper

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