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Abstract
Using time-varying BVARs, we find that oil price increases caused by oil supply shocks did not affect food commodity prices before the start of the millennium, but had positive spillover effects in more recent periods. Likewise, shortfalls in global food commodity supply ‒ resulting from bad harvests ‒ have positive effects on crude oil prices since the early 2000s, in contrast to the preceding era. Remarkably, we also document greater spillover effects of both supply shocks on metals and minerals commodity prices in recent periods, as well as a stronger impact on the own price compared to earlier decades. This (simultaneous) time variation of commodity price dynamics cannot be explained by the biofuels revolution and is more likely the consequence of heightened informational frictions and information discovery in more globalized and financialized commodity markets.
Document type: | Working paper |
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Series Name: | Discussion Paper Series / University of Heidelberg, Department of Economics |
Volume: | 0665 |
Place of Publication: | Heidelberg |
Date Deposited: | 16 Sep 2019 12:18 |
Date: | September 2019 |
Number of Pages: | 38 |
Faculties / Institutes: | The Faculty of Economics and Social Studies > Alfred-Weber-Institut for Economics |
DDC-classification: | 330 Economics |
Uncontrolled Keywords: | commodity markets, food prices, oil prices, spillovers |
Series: | Discussion Paper Series / University of Heidelberg, Department of Economics |