Is there excess co-movement of primary commodity prices? A co-integration test
It is a common perception that primary commodity prices tend to move together. This perception is especially common among commodity traders who may justify an increase in the price of one commodity because the prices of other commodities have increased. This commodity price co-movement can be identified among commodities that seem unrelated in terms of production or consumption substitutability or complementarity. But there is no reason for believing that prices of unrelated commodities should move together, except for macroeconomic shocks affecting commodity markets in general. For example, in a recession commodity prices decline across the board because demand declines; and in periods of generalinflation commodity prices rise, partly because commodities provide a hedge against inflation. However, after accounting for macroeconomic shocks, is co-movement among prices still evident? In this paper, the authors test for co-movement and excess co-movement of primary commodity prices using the econometric tests of co-integration in time series and the resulting error-correction models (ECM). The ECMs will be used to examine the existence of short-run excess co-movement between commodity prices, taking into consideration the long-run relationship between them.
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- Durlauf, Steven N & Phillips, Peter C B, 1988.
"Trends versus Random Walks in Time Series Analysis,"
Econometric Society, vol. 56(6), pages 1333-54, November.
- Steven N. Durlauf & Peter C.B. Phillips, 1986. "Trends Versus Random Walks in Time Series Analysis," Cowles Foundation Discussion Papers 788, Cowles Foundation for Research in Economics, Yale University.
- Frankel, Jeffrey A & Hardouvelis, Gikas A, 1985. "Commodity Prices, Money Surprises and Fed Credibility," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 17(4), pages 425-38, November.
- Stock, James H, 1987. "Asymptotic Properties of Least Squares Estimators of Cointegrating Vectors," Econometrica, Econometric Society, vol. 55(5), pages 1035-56, September.
- Nelson, Charles R. & Plosser, Charles I., 1982. "Trends and random walks in macroeconmic time series : Some evidence and implications," Journal of Monetary Economics, Elsevier, vol. 10(2), pages 139-162.
- Kunst, Robert & Neusser, Klaus, 1990. "Cointegration in a Macroeconomic System," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 5(4), pages 351-65, Oct.-Dec..
- Palaskas, Theodosios & Varangis, Panos, 1989. "Primary commodity prices and macroeconomic variables : a long run relationship," Policy Research Working Paper Series 314, The World Bank.
- Engle, Robert F & Granger, Clive W J, 1987. "Co-integration and Error Correction: Representation, Estimation, and Testing," Econometrica, Econometric Society, vol. 55(2), pages 251-76, March.
- Alogoskoufis, George & Martin, Christopher & Pittis, Nikitas, 1990. "Pricing and Product Market Structure in Open Economies: An Empirical Test," CEPR Discussion Papers 486, C.E.P.R. Discussion Papers.
- Pindyck, Robert S & Rotemberg, Julio J, 1990.
"The Excess Co-movement of Commodity Prices,"
Royal Economic Society, vol. 100(403), pages 1173-89, December.
- Pindyck, Robert S. & Rotemberg, Julio., 1987. "The excess co-movement of commodity prices," Working papers 1969-87., Massachusetts Institute of Technology (MIT), Sloan School of Management.
- Robert S. Pindyck & Julio J. Rotemberg, 1988. "The Excess Co-Movement of Commodity Prices," NBER Working Papers 2671, National Bureau of Economic Research, Inc.
- Phillips, P.C.B., 1986.
"Understanding spurious regressions in econometrics,"
Journal of Econometrics,
Elsevier, vol. 33(3), pages 311-340, December.
- Peter C.B. Phillips, 1985. "Understanding Spurious Regressions in Econometrics," Cowles Foundation Discussion Papers 757, Cowles Foundation for Research in Economics, Yale University.
- Ghura, Dhaneshwar, 1990. "How commodity prices respond to macroeconomic news," Policy Research Working Paper Series 354, The World Bank.
- Davidson, James E H, et al, 1978. "Econometric Modelling of the Aggregate Time-Series Relationship between Consumers' Expenditure and Income in the United Kingdom," Economic Journal, Royal Economic Society, vol. 88(352), pages 661-92, December.
- Sargan, John Denis & Bhargava, Alok, 1983. "Testing Residuals from Least Squares Regression for Being Generated by the Gaussian Random Walk," Econometrica, Econometric Society, vol. 51(1), pages 153-74, January.
- Nickell, Stephen, 1985. "Error Correction, Partial Adjustment and All That: An Expository Note," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 47(2), pages 119-29, May.
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