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Credit Rating Anomaly in Taiwan Stock Market

  • Kuan-Cheng Ko Department of Banking and Finance, National Chi Nan University
  • Shinn-Juh Lin Department of International Business, National Chengchi University
  • Hsiang-Hui Chu Department of Banking and Finance, National Chi Nan University
  • Hsiao-Wei Ho Department of Finance, National Central University
Rational asset-pricing theory asserts that higher risk should be accompanied by higher expected return. The credit-risk puzzle, however, states a negative cross- sectional relationship between credit risk and future stock returns (Dichev, 1998; Grin and Lemmon, 2002; Campbell et al., 2008; Avramov et al., 2009). This pa- per examines the credit-risk puzzle using an independent dataset from Taiwan's stock market. We document the existence of the credit-risk premium in both portfolios and individual stocks, and demonstrate that it can not be explained by well-known asset-pricing models which include the CAPM, Fama and French's (1993) three-factor model, and Liu's (2006) liquidity-augmented CAPM. Unlike the evidence in the U.S. market, rating downgrades only have limited impact on stock returns in Taiwan. Further analysis indicates that credit rating serves as a better proxy for distress risk, and is thus priced in Taiwan's stock market.

  • Kuan-Cheng Ko
  • Shinn-Juh Lin
  • Hsiang-Hui Chu
  • Hsiao-Wei Ho
Rational asset-pricing theory asserts that higher risk should be accompanied by higher expected return. The credit-risk puzzle, however, states a negative cross- sectional relationship between credit risk and future stock returns (Dichev, 1998; Grin and Lemmon, 2002; Campbell et al., 2008; Avramov et al., 2009). This pa- per examines the credit-risk puzzle using an independent dataset from Taiwan's stock market. We document the existence of the credit-risk premium in both portfolios and individual stocks, and demonstrate that it can not be explained by well-known asset-pricing models which include the CAPM, Fama and French's (1993) three-factor model, and Liu's (2006) liquidity-augmented CAPM. Unlike the evidence in the U.S. market, rating downgrades only have limited impact on stock returns in Taiwan. Further analysis indicates that credit rating serves as a better proxy for distress risk, and is thus priced in Taiwan's stock market.
Asset-pricing anomalies,Rationality-based asset-pricing models,Credit ratings,Credit-risk puzzle,Distress risk.