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On the information content of sovereign credit rating reports: Improving the predictability of rating transitions☆

Ursula Slapnik and Igor Lončarski

Journal of International Financial Markets, Institutions and Money, 2021, vol. 73, issue C

Abstract: In order to identify novel qualitative determinants of transitions in sovereign credit ratings, we construct six different textual sentiment and subjectivity measures using dictionary-based, and machine learning approaches on sovereign credit rating reports issued by Moody’s and Fitch in the period from 2002 to 2017. After controlling for macroeconomic and fiscal strength, soft information, as well as known sources of proximity biases, we find that, on average, these novel text-based measures improve the classification accuracy of downgrades and upgrades. The improvement is more notable for sentiment than subjectivity measures, and for downgrades compared to upgrades. Next, we find evidence that credit rating agencies seem to follow the through-the-cycle rating philosophy by taking a longer horizon into account. Finally, to the best of our knowledge, we offer the most comprehensive analysis of textual sentiment measures and their effect on sovereign credit ratings thus far.

Keywords: Sovereign credit rating reports; Rating transitions; Textual sentiment analysis; Subjectivity; Predictability; Rating philosophy (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:intfin:v:73:y:2021:i:c:s1042443121000639

DOI: 10.1016/j.intfin.2021.101344

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Journal of International Financial Markets, Institutions and Money is currently edited by I. Mathur and C. J. Neely

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