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Research on the effect of multiple credit ratings from the perspective of financial regulatory systems in Chinese bond market

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Listed:
  • Xiangyun Zhou
  • Huiling Wang
  • Luping Zhang

Abstract

This paper, starting from the effects of financial regulatory policies, considers the interaction between Chengxin_Moody and Lianhe_Fitch with the dual rating system and the multi-rating system, constructs a new ordered Logit model, and attempts to explore the impact of the Notice, the dual rating system and the multiple rating system on the probability of Chinese corporate bond defaults, rating upgrades, rating downgrades, and the magnitude of credit rating migrations. This study compares the effectiveness of different rating regulatory systems. Using nine thousand two hundred and sixty-two data of Chinese corporate bonds as the research samples. Empirical analysis and robustness test reveal the following findings: (1) The issuance of the Notice has a significant positive effect on the implementation of both the dual rating system and the multiple rating system, with a greater impact on the implementation of the multiple rating system; (2) The issuance of the Notice, along with the dual rating system and the multiple rating system, can all reduce the probability of corporate bond defaults, with the multiple rating system showing the best preventive effect against corporate bond defaults; (3) The dual rating system is more effective in promoting rating agencies to adjust rating behaviors, accurately correcting corporate bond ratings and effectively alleviating the issue of rating inflation. Competition among rating agencies intensifies rating shopping; (4) Under the dual rating system, rating agencies are more likely to expand the magnitude of credit rating upgrades and downgrades, enhancing the differentiation between high-quality corporate bonds and junk corporate bonds; (5) The selection of rating information from Chengxin_Moody and Lianhe_Fitch can appropriately adjust the degree of flexibility or tightening in response to rating regulatory systems. Chengxin_Moody demonstrates a more sensitive reaction compared to Lianhe_Fitch regarding the rating regulatory systems. This study provides valuable references for the formulation and evaluation of the effectiveness of Chinese corporate bond rating regulatory policies.

Suggested Citation

  • Xiangyun Zhou & Huiling Wang & Luping Zhang, 2024. "Research on the effect of multiple credit ratings from the perspective of financial regulatory systems in Chinese bond market," PLOS ONE, Public Library of Science, vol. 19(11), pages 1-17, November.
    • Handle: RePEc:plo:pone00:0312533
    DOI: 10.1371/journal.pone.0312533
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    References listed on IDEAS

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    1. Chen, Zhihua & Wang, Zhen, 2021. "Do firms obtain multiple ratings to hedge against downgrade risk?," Journal of Banking & Finance, Elsevier, vol. 123(C).
    2. Jiang, Xianfeng & Packer, Frank, 2019. "Credit ratings of Chinese firms by domestic and global agencies: Assessing the determinants and impact," Journal of Banking & Finance, Elsevier, vol. 105(C), pages 178-193.
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    5. Livingston, Miles & Poon, Winnie P.H. & Zhou, Lei, 2018. "Are Chinese credit ratings relevant? A study of the Chinese bond market and credit rating industry," Journal of Banking & Finance, Elsevier, vol. 87(C), pages 216-232.
    6. Mathias Kronlund, 2020. "Do Bond Issuers Shop for Favorable Credit Ratings?," Management Science, INFORMS, vol. 66(12), pages 5944-5968, December.
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