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류두원(Doowon Ryu),류두진(Doojin Ryu),양희진(Heejin Yang),홍기택(Kyttack Hong) 한국경영과학회 2015 한국경영과학회지 Vol.40 No.4
Through the event study methodology and the case study on the Company T and its subsidiaries, this study analyzes the effect of credit rating downgrade in the Korean stock market. Our empirical results cast some doubts on whether credit rating agencies made adequate credit rating adjustments on the Chaebol companies, and suggest that little information was provided to the bond market investors. This study provides some policy implications by recommending that regulators encourage credit rating agencies to provide more accurate and appropriate information to market participants.