ABSTRACT
This paper examines the impact of COVID-19 on tail risk contagion across commodity futures markets using a copula-based network method. We document a significant increase in the lower and upper tail contagiousness of commodities following the COVID-19 outbreak. Contagion shows an obvious clustering characteristic, that is, there is higher tail risk connectedness between commodities in the same category. Agricultural commodities are significantly less contagious than metals and energy commodities;soft commodities in particular can offer investors significant diversification benefits. There are several hub commodities in the contagion network, chief among them copper, which are good transmitters of shocks and should be treated with caution by investors and regulators. Although tail risk and contagiousness of individual commodities increase together during the pandemic, we find a negative cross-sectional relationship between tail risk and contagiousness, that is, commodities with high tail risk are not necessarily highly contagious and may even be less so.
ABSTRACT
This article highlights the increasingly important role of clean energy metals in return and volatility spillovers across energy and foreign exchange markets. During the collapse of oil prices from 2014 to 2016, crude oil futures were at the center of the risk contagion;however, since the COVID-19 pandemic broke out, the spillovers of clean energy metal futures have become one of the main sources of the risk contagion. Additionally, crude oil and the US dollar are the most important contributors to the spillovers, but further spillovers are emerging between the Chinese yuan, euro, and Japanese yen with clean energy metals. © 2022 Wiley Periodicals LLC.