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Information flow and credit rating announcements

Author

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  • Khorram, Mehdi
  • Mo, Haitao
  • Sanger, Gary C.

Abstract

We employ the implied volatility spread (IVS) and the short lending fee as measures of private information conveyed by their respective markets. Using issuer credit rating announcements as an informational event, we find that both IVS and the short fee have significantly higher predictive power for returns on event days versus non-event days. Both also predict the direction and magnitude of credit rating changes. Consistent with the linkage between the short sale and options markets, in models with both explanatory variables, the short fee remains significant in all specifications, while IVS loses explanatory power.

Suggested Citation

  • Khorram, Mehdi & Mo, Haitao & Sanger, Gary C., 2023. "Information flow and credit rating announcements," Journal of Financial Markets, Elsevier, vol. 65(C).
    • Handle: RePEc:eee:finmar:v:65:y:2023:i:c:s1386418123000356
    DOI: 10.1016/j.finmar.2023.100837
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    More about this item

    Keywords

    Credit rating announcements; Implied volatility spread; Stock lending market; Options market; Return predictability;
    All these keywords.

    JEL classification:

    • G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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