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The impact of COVID-19 on the relative market efficiency and forecasting ability of credit derivative and equity markets

William J. Procasky and Anwen Yin

International Review of Financial Analysis, 2023, vol. 90, issue C

Abstract: While there has been a significant amount of research related to COVID-19’s impact on financial markets, none has addressed the potential change in relative market efficiency and associated forecasting power of credit and equity markets. Accordingly, we examine the impact of COVID-19 on previously observed predictive power of cross-market informational flow in the high yield CDS and equity markets. Our analysis reveals that, a significant structural break occurred with the onset of COVID-19 in which both markets exhibited flow patterns distinct from those observed in the past. This indicates that investors reacted to the pandemic and new information coming to market differently than in the past. Moreover, we empirically link the structural break to governmental measures enacted to stabilize financial markets and economies. Finally, we observe that the break was more severe in the equity than CDS market, a finding consistent with the CDS market having an overall informational advantage.

Keywords: COVID-19; Market efficiency; Informational flow; Predictive power; Structural break; CDS indices (search for similar items in EconPapers)
JEL-codes: C32 C58 G14 G17 (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:finana:v:90:y:2023:i:c:s1057521923004428

DOI: 10.1016/j.irfa.2023.102926

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