IS ISSUING SUBORDINATED DEBT BY JAPANESE BANKS EFFECTIVE IN THE JAPANESE MARKET?

The paper examines the relationship between subordinated debt yield spreads of Japanese banks and bank-specific risk in the Japanese bond market. Subordinated debt issued by banking organizations may enhance the market discipline of banking organizations. In order to give a theoretical explanation for this, the paper develops models that describe how yield spreads of subordinated debt may be related to bank-specific risks and systematic risks. Although the sample size of this study is not large enough to draw an undisputed conclusion, the models tested here find no clear evidence of a positive relationship between subordinated debt premiums and bank-specific risks in the Japanese market. These findings for the Japanese market suggest that in the current environment of the Japanese financial system, issuing subordinated debt is unlikely to improve the prudential supervision of banks with market forces as suggested in the newly proposed Basel Accords.