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Are Bond Ratings Informative? Evidence From Regulatory Regime Changes, Louis H. Ederington, Jeremy Goh, Yen Teik Lee, Lisa Yang

Research Collection Lee Kong Chian School Of Business

The recent Dodd-Frank Act (Section 939B) enacted in 2010 repeals credit rating agencies’ (CRAs) exemption from Regulation Fair Disclosure. We test whether CRAs continue to provide new information to the market after the repeal. We find that the significant pre-repeal stock price responses to rating changes disappear after the regime change. Bond price reactions however remain significant. These results are even more significant at the investment-speculative boundary. Our evidence suggests that CRAs serve as a conduit for transmitting private information before the repeal. It also shows that regulatory constraint is a channel by which credit ratings affect cost of financing.