We test for changes in price behavior in the longest crude oil price series available (1861-2008). We find strong evidence for changes in persistence and in volatility of price across three well defined periods. We argue that historically, the real price of oil has tended to be highly persistent and volatile whenever rapid industrialization in a major world economy coincided with uncertainty regarding access to supply. We present a modified commodity storage model that fully incorporates demand, and further can accommodate both transitory and permanent shocks. We show that the role of storage when demand is subject to persistent growth shocks is speculative, instead of its classic mitigating role. This result helps to account for the increased volatility of oil price we observe in these periods.
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
14927.
Length: Date of creation: Apr 2009 Date of revision: Handle: RePEc:nbr:nberwo:14927
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Find related papers by JEL classification: E0 - Macroeconomics and Monetary Economics - - General L7 - Industrial Organization - - Industry Studies: Primary Products and Construction N5 - Economic History - - Agriculture, Natural Resources, Environment and Extractive Industries Q4 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy
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