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Is there excess co-movement of primary commodity prices? A co-integration test

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Author Info

  • Palaskas, Theodosios B.
  • Varangis, Panos N.

Abstract

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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Bibliographic Info

Paper provided by The World Bank in its series Policy Research Working Paper Series with number 758.

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Date of creation: 31 Aug 1991
Date of revision:
Handle: RePEc:wbk:wbrwps:758

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Keywords: Crops&Crop Management Systems; Environmental Economics&Policies; Montreal Protocol; Markets and Market Access; Access to Markets;

References

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  1. 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.
  2. Ghura, Dhaneshwar, 1990. "How commodity prices respond to macroeconomic news," Policy Research Working Paper Series 354, The World Bank.
  3. Pindyck, Robert S & Rotemberg, Julio J, 1990. "The Excess Co-movement of Commodity Prices," Economic Journal, Royal Economic Society, vol. 100(403), pages 1173-89, December.
  4. 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.
  5. Palaskas, Theodosios & Varangis, Panos, 1989. "Primary commodity prices and macroeconomic variables : a long run relationship," Policy Research Working Paper Series 314, The World Bank.
  6. Phillips, P.C.B., 1986. "Understanding spurious regressions in econometrics," Journal of Econometrics, Elsevier, vol. 33(3), pages 311-340, December.
  7. 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.
  8. 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.
  9. 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.
  10. 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..
  11. 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.
  12. 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.
  13. Stock, James H, 1987. "Asymptotic Properties of Least Squares Estimators of Cointegrating Vectors," Econometrica, Econometric Society, vol. 55(5), pages 1035-56, September.
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Citations

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Cited by:
  1. Yannick Le Pen & Benoît Sévi, 2013. "Futures trading and the excess comovement of commodity prices," Working Papers 2013-019, Department of Research, Ipag Business School.
  2. Larson, Donald F. & Varangis, Panos & Yabuki, Nanae, 1998. "Commodity risk management and development," Policy Research Working Paper Series 1963, The World Bank.
  3. Paul Cashin & C John McDermott & Alasdair Scott, 1999. "The myth of co-moving commodity prices," Reserve Bank of New Zealand Discussion Paper Series G99/9, Reserve Bank of New Zealand.
  4. Soytas, Ugur & Sari, Ramazan & Hammoudeh, Shawkat & Hacihasanoglu, Erk, 2009. "World oil prices, precious metal prices and macroeconomy in Turkey," Energy Policy, Elsevier, vol. 37(12), pages 5557-5566, December.
  5. Firew B Woldeyes, 2013. "Long-run Effects of Resource Rents in Developing Countries: The role of public investment management," OxCarre Working Papers 105, Oxford Centre for the Analysis of Resource Rich Economies, University of Oxford.
  6. Labys, W. C. & Achouch, A. & Terraza, M., 1999. "Metal prices and the business cycle," Resources Policy, Elsevier, vol. 25(4), pages 229-238, December.
  7. Bhar, Ramaprasad & Hammoudeh, Shawkat, 2011. "Commodities and financial variables: Analyzing relationships in a changing regime environment," International Review of Economics & Finance, Elsevier, vol. 20(4), pages 469-484, October.
  8. repec:ipg:wpaper:19 is not listed on IDEAS
  9. Walter C. Labys, 2003. "New Directions in the Modeling and Forecasting of Commodity Markets," Mondes en développement, De Boeck Université, vol. 122(2), pages 3-19.
  10. Baffes, John & Gohou, Gaston, 2005. "The co-movement between cotton and polyester prices," Policy Research Working Paper Series 3534, The World Bank.
  11. Jain, Anshul & Ghosh, Sajal, 2013. "Dynamics of global oil prices, exchange rate and precious metal prices in India," Resources Policy, Elsevier, vol. 38(1), pages 88-93.
  12. Natanelov, Valeri & Alam, Mohammad J. & McKenzie, Andrew M. & Van Huylenbroeck, Guido, 2011. "Is there co-movement of agricultural commodities futures prices and crude oil?," Energy Policy, Elsevier, vol. 39(9), pages 4971-4984, September.
  13. Le Pen, Yannick & Sévi, Benoît, 2010. "Revisiting the excess co-movements of commodity prices in a data-rich environment," Economics Papers from University Paris Dauphine 123456789/6800, Paris Dauphine University.
  14. Sari, Ramazan & Hammoudeh, Shawkat & Soytas, Ugur, 2010. "Dynamics of oil price, precious metal prices, and exchange rate," Energy Economics, Elsevier, vol. 32(2), pages 351-362, March.
  15. Natanelov, Valeri & Alam, Mohammad Jahangir & McKenzie, Andrew M. & Van Huylenbroeck, Guido, 2011. "Is There Co-Movement of Agricultural Commodities Futures Prices and Crude Oil?," 2011 International Congress, August 30-September 2, 2011, Zurich, Switzerland 114626, European Association of Agricultural Economists.

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