期刊
JOURNAL OF CLEANER PRODUCTION
卷 243, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2019.118669
关键词
Clean energy equities; Commodity market volatility; Time-varying correlations; Hedging effectiveness
Although clean energy equities have emerged as a new asset class for market participants, especially environmentally concerned investors, existing and previous studies pay very little attention to how equity investors in clean energy markets can reduce their downside risk. The authors of this paper address this void by considering the roles of the commodity market volatility indexes of crude oil, gold and silver. The results of the dynamic conditional correlation model show that commodity volatilities and clean energy equity prices move in opposite directions. Based on the hedging effectiveness, each of the three volatility indexes acts as an effective tool for reducing the risk of clean energy equity indexes. The implied volatility index of crude oil is the most effective tool, followed by that of gold and silver. Further analysis indicates the robustness of the results to the application of an asymmetric conditional correlation model. The findings extend the limited understanding of how to hedge the downside risk of clean energy stock indexes, and provide useful implications to market participants on the ability of implied volatility indexes of major commodities to hedge that risk. (C) 2019 Elsevier Ltd. All rights reserved.
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