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Co-movement of major energy, agricultural, and food commodity price returns: A time-series assessment

Francesca de Nicola, Pierangelo De Pace () and Manuel Hernandez

Energy Economics, 2016, vol. 57, issue C, 28-41

Abstract: Using monthly data between 1970 and 2013, we provide a comprehensive analysis of the extent of co-movement (measured by correlation coefficients) among the nominal price returns of 11 major energy, agricultural, and food commodities. We study the degree and the time evolution of unconditional and conditional correlations using a uniform-spacings estimation and testing approach, multivariate dynamic conditional correlation models, and a rolling regression procedure. We find that (1) the price returns of energy and agricultural commodities are highly correlated; (2) the overall level of co-movement among commodities increased in recent years, especially between energy and agricultural commodities, and in particular in the cases of maize and soybean oil, which are important inputs in the production of biofuels; and (3) the stock market volatility is positively associated with the co-movement of price returns across markets, especially after 2007.

Keywords: Commodity prices; Co-movement; Time-series models (search for similar items in EconPapers)
JEL-codes: Q02 E30 C32 (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1016/j.eneco.2016.04.012

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