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Investor demand, market efficiency and spot-futures relation: Further evidence from crude palm oil

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  • Go, You-How
  • Lau, Wee-Yeap

Abstract

This study examines the hypothesis of Tilton et al. (2011) that asserts investor demand affects commodity prices when spot and futures prices are closely correlated during strong contango in a hard commodity like copper. However, using daily data of crude palm oil (CPO) spot and futures prices from January 2000 to July 2016, after taking into account the variance of the increments in a random walk as measured by variance ratio, our study finds that spot and futures prices are highly correlated during backwardation period. It is further observed that: First, investor demand on the futures market is highly correlated with spot and futures prices during backwardation, but lesser during weak contango, and the least correlated during strong contango. Second, the efficiency of the futures market is related to the degree of correlation between spot and futures price changes. High efficient information transmission in the futures market is linked to a high correlation between spot and futures markets and vice versa. Therefore, we extend the hypothesis that the preference of holding a long position in the futures market is due to the anticipation of insufficient supply of CPO which happens during the backwardation period.

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  • Go, You-How & Lau, Wee-Yeap, 2017. "Investor demand, market efficiency and spot-futures relation: Further evidence from crude palm oil," Resources Policy, Elsevier, vol. 53(C), pages 135-146.
    • Handle: RePEc:eee:jrpoli:v:53:y:2017:i:c:p:135-146
    DOI: 10.1016/j.resourpol.2017.06.009
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    1. Guglielmo Maria Caporale & Davide Ciferri & Alessandro Girardi, 2014. "Time-Varying Spot and Futures Oil Price Dynamics," Scottish Journal of Political Economy, Scottish Economic Society, vol. 61(1), pages 78-97, February.
    2. Gunther Capelle-Blancard & Dramane Coulibaly, 2011. "Index trading and agricultural commodity prices: A panel Granger causality analysis," International Economics, CEPII research center, issue 126-127, pages 51-71.
    3. Irwin, Scott H. & Sanders, Dwight R., 2012. "Financialization and Structural Change in Commodity Futures Markets," Journal of Agricultural and Applied Economics, Cambridge University Press, vol. 44(3), pages 371-396, August.
    4. Brian M. Lucey & Fergal A. O’Connor, 2013. "Do bubbles occur in the gold price? An investigation of gold lease rates and Markov Switching models," Borsa Istanbul Review, Research and Business Development Department, Borsa Istanbul, vol. 13(3), pages 53-63, September.
    5. Adämmer, Philipp & Bohl, Martin T., 2015. "Speculative bubbles in agricultural prices," The Quarterly Review of Economics and Finance, Elsevier, vol. 55(C), pages 67-76.
    6. Charles, Amélie & Darné, Olivier, 2009. "The efficiency of the crude oil markets: Evidence from variance ratio tests," Energy Policy, Elsevier, vol. 37(11), pages 4267-4272, November.
    7. Andrew W. Lo, A. Craig MacKinlay, 1988. "Stock Market Prices do not Follow Random Walks: Evidence from a Simple Specification Test," The Review of Financial Studies, Society for Financial Studies, vol. 1(1), pages 41-66.
    8. Chang, Chun-Ping & Lee, Chien-Chiang, 2015. "Do oil spot and futures prices move together?," Energy Economics, Elsevier, vol. 50(C), pages 379-390.
    9. Christopher L. Gilbert, 2010. "How to Understand High Food Prices," Journal of Agricultural Economics, Wiley Blackwell, vol. 61(2), pages 398-425, June.
    10. Bassam Fattouh, Lutz Kilian, and Lavan Mahadeva, 2013. "The Role of Speculation in Oil Markets: What Have We Learned So Far?," The Energy Journal, International Association for Energy Economics, vol. 0(Number 3).
    11. Mantu Kumar Mahalik & Debashis Acharya & M. Suresh Babu, 2014. "Price discovery and volatility spillovers in futures and spot commodity markets," Journal of Advances in Management Research, Emerald Group Publishing Limited, vol. 11(2), pages 211-226, July.
    12. Lo, Andrew W. & MacKinlay, A. Craig, 1989. "The size and power of the variance ratio test in finite samples : A Monte Carlo investigation," Journal of Econometrics, Elsevier, vol. 40(2), pages 203-238, February.
    13. Dwight R. Sanders & Scott H. Irwin, 2010. "A speculative bubble in commodity futures prices? Cross‐sectional evidence," Agricultural Economics, International Association of Agricultural Economists, vol. 41(1), pages 25-32, January.
    14. Dwight R. Sanders & Scott H. Irwin, 2011. "New Evidence on the Impact of Index Funds in U.S. Grain Futures Markets," Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, Canadian Agricultural Economics Society/Societe canadienne d'agroeconomie, vol. 59(4), pages 519-532, December.
    15. Takeshi Inoue & Shigeyuki Hamori, 2014. "Market efficiency of commodity futures in India," Applied Economics Letters, Taylor & Francis Journals, vol. 21(8), pages 522-527, May.
    16. Irwin, Scott H. & Sanders, Dwight R. & Merrin, Robert P., 2009. "Devil or Angel? The Role of Speculation in the Recent Commodity Price Boom (and Bust)," Journal of Agricultural and Applied Economics, Southern Agricultural Economics Association, vol. 41(2), August.
    17. Kristoufek, Ladislav & Vosvrda, Miloslav, 2014. "Commodity futures and market efficiency," Energy Economics, Elsevier, vol. 42(C), pages 50-57.
    18. Wright, Jonathan H, 2000. "Alternative Variance-Ratio Tests Using Ranks and Signs," Journal of Business & Economic Statistics, American Statistical Association, vol. 18(1), pages 1-9, January.
    19. Andrew McKenzie & Matthew Holt, 2002. "Market efficiency in agricultural futures markets," Applied Economics, Taylor & Francis Journals, vol. 34(12), pages 1519-1532.
    20. Östensson, Olle, 2011. "Comment: Investor demand and spot commodity prices," Resources Policy, Elsevier, vol. 36(4), pages 372-374.
    21. Christopher K. Ma & Jeffrey M. Mercer & Matthew A. Walker, 1992. "Rolling over futures contracts: A note," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 12(2), pages 203-217, April.
    22. Garbade, Kenneth D & Silber, William L, 1983. "Futures Contracts on Commodities with Multiple Varieties: An Analysis of Premiums and Discounts," The Journal of Business, University of Chicago Press, vol. 56(3), pages 249-272, July.
    23. Bos, J.W.B. & Van der Molen, M., 2012. "A bitter brew? Futures speculation and commodity prices," Research Memorandum 044, Maastricht University, Maastricht Research School of Economics of Technology and Organization (METEOR).
    24. Charles, Amélie & Darné, Olivier & Kim, Jae H., 2015. "Will precious metals shine? A market efficiency perspective," International Review of Financial Analysis, Elsevier, vol. 41(C), pages 284-291.
    25. Norman V. Loayza & Romain Rancière & Luis Servén & Jaume Ventura, 2007. "Macroeconomic Volatility and Welfare in Developing Countries: An Introduction," The World Bank Economic Review, World Bank, vol. 21(3), pages 343-357, October.
    26. P. Herings, 2014. "General equilibrium and the new neoclassical synthesis," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 57(3), pages 437-477, November.
    27. Benoît Guilleminot & Jean-Jacques Ohana & Steve Ohana, 2014. "The interaction of speculators and index investors in agricultural derivatives markets," Agricultural Economics, International Association of Agricultural Economists, vol. 45(6), pages 767-792, November.
    28. Riza Emekter & Benjamas Jirasakuldech & Peter Went, 2012. "Rational speculative bubbles and commodities markets: application of duration dependence test," Applied Financial Economics, Taylor & Francis Journals, vol. 22(7), pages 581-596, April.
    29. Irwin, Scott H. & Sanders, Dwight R., 2012. "Testing the Masters Hypothesis in commodity futures markets," Energy Economics, Elsevier, vol. 34(1), pages 256-269.
    30. Kaufmann, Robert K. & Ullman, Ben, 2009. "Oil prices, speculation, and fundamentals: Interpreting causal relations among spot and futures prices," Energy Economics, Elsevier, vol. 31(4), pages 550-558, July.
    31. Xiaoliang Liu & Guenther Filler & Martin Odening, 2013. "Testing for speculative bubbles in agricultural commodity prices: a regime switching approach," Agricultural Finance Review, Emerald Group Publishing Limited, vol. 73(1), pages 179-200, May.
    32. Fama, Eugene F, 1991. "Efficient Capital Markets: II," Journal of Finance, American Finance Association, vol. 46(5), pages 1575-1617, December.
    33. Dwight R. Sanders & Scott H. Irwin & Robert P. Merrin, 2010. "The Adequacy of Speculation in Agricultural Futures Markets: Too Much of a Good Thing?," Applied Economic Perspectives and Policy, Agricultural and Applied Economics Association, vol. 32(1), pages 77-94.
    34. Joakim Westerlund & Paresh Narayan, 2013. "Testing the Efficient Market Hypothesis in Conditionally Heteroskedastic Futures Markets," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 33(11), pages 1024-1045, November.
    35. repec:cii:cepiei:2011-q2-3-126-127-4 is not listed on IDEAS
    36. Param Silvapulle & Imad A. Moosa, 1999. "The relationship between spot and futures prices: Evidence from the crude oil market," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 19(2), pages 175-193, April.
    37. Lucas, Robert E, Jr, 1978. "Asset Prices in an Exchange Economy," Econometrica, Econometric Society, vol. 46(6), pages 1429-1445, November.
    38. Miffre, Joëlle & Brooks, Chris, 2013. "Do long-short speculators destabilize commodity futures markets?," International Review of Financial Analysis, Elsevier, vol. 30(C), pages 230-240.
    39. Chris Brooks & Marcel Prokopczuk & Yingying Wu, 2015. "Booms and Busts in Commodity Markets: Bubbles or Fundamentals?," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 35(10), pages 916-938, October.
    40. Charles M. Oellermann & B. Wade Brorsen & Paul L. Farris, 1989. "Price discovery for feeder cattle," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 9(2), pages 113-121, April.
    41. Tilton, John E. & Humphreys, David & Radetzki, Marian, 2011. "Investor demand and spot commodity prices," Resources Policy, Elsevier, vol. 36(3), pages 187-195, September.
    42. Ahmet Enis Kocagil, 1997. "Does futures speculation stabilize spot prices? Evidence from metals markets," Applied Financial Economics, Taylor & Francis Journals, vol. 7(1), pages 115-125.
    43. Larry Martin & Philip Garcia, 1981. "The Price-Forecasting Performance of Futures Markets for Live Cattle and Hogs: A Disaggregated Analysis," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 63(2), pages 209-215.
    44. Gulley, Andrew & Tilton, John E., 2014. "The relationship between spot and futures prices: An empirical analysis," Resources Policy, Elsevier, vol. 41(C), pages 109-112.
    45. Scott H. Irwin & Dwight R. Sanders, 2011. "Index Funds, Financialization, and Commodity Futures Markets," Applied Economic Perspectives and Policy, Agricultural and Applied Economics Association, vol. 33(1), pages 1-31.
    46. Tetteh A. Kofi, 1973. "A Framework for Comparing the Efficiency of Futures Markets," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 55(4_Part_1), pages 584-594.
    47. Haase, Marco & Seiler Zimmermann, Yvonne & Zimmermann, Heinz, 2016. "The impact of speculation on commodity futures markets – A review of the findings of 100 empirical studies," Journal of Commodity Markets, Elsevier, vol. 3(1), pages 1-15.
    48. Fama, Eugene F, 1970. "Efficient Capital Markets: A Review of Theory and Empirical Work," Journal of Finance, American Finance Association, vol. 25(2), pages 383-417, May.
    49. Robert S. Pindyck, 2001. "The Dynamics of Commodity Spot and Futures Markets: A Primer," The Energy Journal, International Association for Energy Economics, vol. 0(Number 3), pages 1-30.
    50. Abby Kim, 2015. "Does Futures Speculation Destabilize Commodity Markets?," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 35(8), pages 696-714, August.
    51. Etienne, Xiaoli L. & Irwin, Scott H. & Garcia, Philip, 2014. "Bubbles in food commodity markets: Four decades of evidence," Journal of International Money and Finance, Elsevier, vol. 42(C), pages 129-155.
    52. Zhang, Yue-Jun, 2013. "Speculative trading and WTI crude oil futures price movement: An empirical analysis," Applied Energy, Elsevier, vol. 107(C), pages 394-402.
    53. Ted C. Schroeder & Barry K. Goodwin, 1991. "Price discovery and cointegration for live hogs," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 11(6), pages 685-696, December.
    54. Poterba, James M. & Summers, Lawrence H., 1988. "Mean reversion in stock prices : Evidence and Implications," Journal of Financial Economics, Elsevier, vol. 22(1), pages 27-59, October.
    55. Raymond M. Leuthold, 1974. "The Price Performance on the Futures Market of a Nonstorable Commodity: Live Beef Cattle," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 56(2), pages 271-279.
    56. William G. Tomek & Roger W. Gray, 1970. "Temporal Relationships Among Prices on Commodity Futures Markets: Their Allocative and Stabilizing Roles," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 52(3), pages 372-380.
    57. LeRoy, Stephen F, 1973. "Risk Aversion and the Martingale Property of Stock Prices," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 14(2), pages 436-446, June.
    58. J. Stevens & P. de Lamirande, 2014. "Testing the efficiency of the futures market for crude oil in the presence of a structural break," Applied Economics, Taylor & Francis Journals, vol. 46(33), pages 4053-4059, November.
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    5. You-How Go & Wee-Yeap Lau, 2017. "The Relationship of Crude Palm Oil Spot-Futures under Inflationary Expectation in Gold Market," Capital Markets Review, Malaysian Finance Association, vol. 25(1), pages 43-62.
    6. Go, You-How & Lau, Wee-Yeap, 2024. "Terms of trade or market power? Further evidence from dynamic spillovers in return and volatility between Malaysian crude palm oil and foreign exchange markets," The North American Journal of Economics and Finance, Elsevier, vol. 73(C).
    7. Santeramo, Fabio Gaetano & Di Gioia, Leonardo & Lamonaca, Emilia, 2021. "Price responsiveness of supply and acreage in the EU vegetable oil markets: Policy implications," Land Use Policy, Elsevier, vol. 101(C).
    8. You-How Go & Wee-Yeap Lau, 2019. "Palm oil spot-futures relation: Evidence from unrefined and refined products," Agricultural Economics, Czech Academy of Agricultural Sciences, vol. 65(3), pages 133-142.
    9. You-How Go & Wee-Yeap Lau, 2020. "Does Trading Volume explain the Information Flow of Crude Palm Oil Futures Returns?," The Review of Finance and Banking, Academia de Studii Economice din Bucuresti, Romania / Facultatea de Finante, Asigurari, Banci si Burse de Valori / Catedra de Finante, vol. 12(2), pages 115-136, December.
    10. Jebabli, Ikram & Roubaud, David, 2018. "Time-varying efficiency in food and energy markets: Evidence and implications," Economic Modelling, Elsevier, vol. 70(C), pages 97-114.
    11. You‐How Go & Jia‐Jun Teo & Kam Fong Chan, 2023. "The effectiveness of crude oil futures hedging during infectious disease outbreaks in the 21st century," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 43(11), pages 1559-1575, November.
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    More about this item

    Keywords

    Contango and backwardation; Weak-form market efficiency; Investor demand; Spot-futures relation; Crude palm oil;
    All these keywords.

    JEL classification:

    • G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • Q10 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - General

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