This paper tests and confirms the existence of a puzzling phenomenon - the prices of largely unrelated raw commodities have a persistent tendency to move together. We show that this comovement of prices is well in excess of anything that can be explained by the common effects of past, current, or expected future values of macroeconomic variables such as inflation, industrial production, interest rates, and exchange rates. These results are a rejection of the standard competitive model of commodity price formation with storage.
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
2671.
Length: Date of creation: Jul 1988 Date of revision: Publication status: published as The Economic Journal, Dec. 1990 Handle: RePEc:nbr:nberwo:2671
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Nicholas Barberis & Andrei Shleifer & Jeffrey Wurgler, 2002.
"Comovement,"
NBER Working Papers
8895, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)
Barberis, Nicholas & Shleifer, Andrei & Wurgler, Jeffrey, 2005.
"Comovement,"
Journal of Financial Economics,
Elsevier, vol. 75(2), pages 283-317, February.
[Downloadable!] (restricted)
Nicholas Barberis & Andrei Shleifer, 2000.
"Style Investing,"
NBER Working Papers
8039, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)
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