Impact of COVID-19 outbreak on asymmetric multifractality of gold and oil prices

Walid Mensi, Ahmet Sensoy, Xuan Vinh Vo and Sang Hoon Kang

Resources Policy, 2020, vol. 69, issue C

Abstract: This paper examines the impacts of COVID-19 on the multifractality of gold and oil prices based on upward and downward trends. We apply the Asymmetric Multifractal Detrended Fluctuation Analysis (A-MF-DFA) approach to 15-min interval intraday data. The results show strong evidence of asymmetric multifractality that increases as the fractality scale increases. Moreover, multifractality is especially higher in the downside (upside) trend for Brent oil (gold), and this excess asymmetry has been more accentuated during the COVID-19 outbreak. Before the outbreak, the gold (oil) market was more inefficient during downward (upward) trends. During the COVID-19 outbreak period, we see that the results have changed. More precisely, we find that gold (oil) is more inefficient during upward (downward) trends. Gold and oil markets have been inefficient, particularly during the outbreak. The efficiency of gold and oil markets is sensitive to scales, market trends, and to the pandemic outbreak, highlighting the investor sentiment effect.

Keywords: Gold; Crude oil; High frequency; COVID-19; Hurst exponent; A-MF-DFA (search for similar items in EconPapers)
JEL-codes: G14 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (114)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:jrpoli:v:69:y:2020:i:c:s0301420720308618

DOI: 10.1016/j.resourpol.2020.101829

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