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A Long Memory Conditional Variance Model for International Grain Markets

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  • Jin, Hyun Joung

Abstract

The study explores a long memory conditional volatility model on international grain markets, demonstrating importance of modeling both temporal effects of volatility and long memory process. This study adopts six different volatility models, nested in an ARMA(p,q)- FIGARCH(P,D,Q), to capture dependence of grain cash price volatility and compares the performance of the six models. It also visits a related question about non-normal behaviors of grain prices and adopts the student-t density intended to account for fat-tailed properties of the data. We find suitability of the FIGARCH type models under the student-t distribution and competitiveness of the parsimonious FIGARCH(1,d,0) for modeling long memory volatility.

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Bibliographic Info

Article provided by Korea Rural Economic Institute in its journal Journal of Rural Development/Nongchon-Gyeongje.

Volume (Year): 31 (2008)
Issue (Month): 2 (May)
Pages:

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Handle: RePEc:ags:jordng:45654

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Keywords: international grain markets; stochastic volatility; FIGARCH; non-normality; Agribusiness; Agricultural Finance; Crop Production/Industries; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; International Development; International Relations/Trade;

References

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  11. McCurdy, Thomas H & Morgan, Ieuan G, 1988. "Testing the Martingale Hypothesis in Deutsche Mark Futures with Models Specifying the Form of Heteroscedasticity," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 3(3), pages 187-202, July-Sept.
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  13. Bollerslev, Tim, 1986. "Generalized autoregressive conditional heteroskedasticity," Journal of Econometrics, Elsevier, vol. 31(3), pages 307-327, April.
  14. Baillie, Richard T & Myers, Robert J, 1991. "Bivariate GARCH Estimation of the Optimal Commodity Futures Hedge," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 6(2), pages 109-24, April-Jun.
  15. Haigh, Michael S. & Holt, Matthew T., 2002. "Hedging Foreign Currency, Freight And Commodity Futures Portfolios: A Note," Working Papers 28573, University of Maryland, Department of Agricultural and Resource Economics.
  16. Baillie, Richard T., 1996. "Long memory processes and fractional integration in econometrics," Journal of Econometrics, Elsevier, vol. 73(1), pages 5-59, July.
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