Are unsolicited ratings biased? Evidence from long-run stock performance

Soku Byoun, Jon A. Fulkerson, Seung Hun Han and Yoon S. Shin

Journal of Banking & Finance, 2014, vol. 42, issue C, 326-338

Abstract: We test the biasedness of unsolicited ratings relative to solicited ratings using the ex post firm performance measured by the long-run stock performance of firms following rating announcements and changes. We find that the announcements of new unsolicited ratings are followed by negative long-run stock performance, while those of new solicited ratings are followed by insignificant long-run stock performance. These results are inconsistent with the conservatism hypothesis that suggests that unsolicited ratings are downward biased. We further demonstrate that firms with solicited upgraded (downgraded) ratings experience subsequent positive (negative) abnormal stock performance, while those with unsolicited rating changes have zero abnormal stock performance. The differential stock performance following rating changes between solicited and unsolicited ratings reflect the differential information carried by each type of rating rather than the biasedness in ratings. Specifically, while solicited ratings are based on both public and private information, unsolicited ratings are mainly based on public information. Overall, we find no evidence for a downward bias in unsolicited ratings.

Keywords: Credit ratings; Unsolicited ratings; Long-run returns (search for similar items in EconPapers)
JEL-codes: G10 G14 G15 (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378426614000594
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:jbfina:v:42:y:2014:i:c:p:326-338

DOI: 10.1016/j.jbankfin.2014.02.005

Access Statistics for this article

Journal of Banking & Finance is currently edited by Ike Mathur

More articles in Journal of Banking & Finance from Elsevier
Bibliographic data for series maintained by Catherine Liu ().