Why do foreign firms obtain credit ratings by global rating agencies rather than from their home country's rating agencies even though global raters typically assign lower credit ratings when these foreign firms issue bonds in their home currencies? We find that bonds rated by a global agency decreased yields 11‐14 basis points (bps) when compared to those rated by Japanese rating agencies but, during the 2007‐2009 financial crisis, the yields on these Japanese bonds increased 12‐17 bps, thus fully negating the advantage of obtaining a bond rating from a global rater. This suggests that the reputation of global rating agencies declined during the 2007‐2009 crisis period.
We compare credit ratings assigned to Japanese firms by the two leading U.S. rating agencies and the two leading Japanese agencies. Our goal is to investigate the complaint that the U.S. agencies Moody's and Standard and Poor's (S&P) ignore special corporate governance features of Japanese firms, i.e., keiretsu affiliation. We find that it is true that ratings of Japanese firms by the U.S. agencies are systematically lower than those assigned by Japanese raters. However, the reasons for the differences are not found to be related to keiretsu affiliation. Thus, we reject one of the prominent reasons for rating differences put forth by managers of Japanese firms. This leaves open the question of what drives the difference. The phenomenon is clearly consistent with more general home bias documented in previous work.
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