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Media Coverage and Food Commodities: Agricultural Futures Prices and Volatility Effects

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  • Almanzar, Miguel
  • Torero, Maximo

Abstract

We examine how media coverage of fluctuations in the price of agricultural commodities affects these prices and their volatility. We develop a unified empirical framework to analyze the media’s effects on both returns and volatility using insights from the literature. We use daily prices of futures contracts for soybeans, hard wheat, soft wheat, rice, and maize, complemented by a unique dataset that follows a comprehensive set of global media outlets and uses an algorithm to determine sophisticated relationships among phrases in a news article which signal an increase or decrease in the price of those four commodities. We find price effects that are economically important in size. Our estimates imply a net increasing effect of media coverage on the price of these four commodities; these effects are mostly concentrated in 2012 and from 2015 onwards, meaning that these effects are important in periods of both high and low prices. Across commodities, the price effects are concentrated in soybeans and maize. We find robust evidence that media coverage decreases volatility for these agricultural commodities on average for the period we study. The effects on volatility balance each other, with decreasing price coverage decreasing the variance of returns and increasing price coverage increasing the variance of returns of futures contracts of these commodities; however, the increase is than the decrease. Our results suggest that media coverage increases periods of normal volatility and decreases periods of excessive volatility. These results point to the potential of using media coverage to bring attention to price surges and to decrease volatility during food crises or times when there is above-normal volatility. The dynamics between the price of agricultural commodities and media coverage may help prevent knee-jerk policy reactions by discouraging market overreaction, encouraging market stability, and promoting food security. They highlight crucial role of providing appropriate information as fast as possible so media coverage and reflects the fundamentals that drive food commodity prices.

Suggested Citation

  • Almanzar, Miguel & Torero, Maximo, 2017. "Media Coverage and Food Commodities: Agricultural Futures Prices and Volatility Effects," Discussion Papers 264781, University of Bonn, Center for Development Research (ZEF).
    • Handle: RePEc:ags:ubzefd:264781
    DOI: 10.22004/ag.econ.264781
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    References listed on IDEAS

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    1. Paul C. Tetlock & Maytal Saar‐Tsechansky & Sofus Macskassy, 2008. "More Than Words: Quantifying Language to Measure Firms' Fundamentals," Journal of Finance, American Finance Association, vol. 63(3), pages 1437-1467, June.
    2. Arellano, Manuel & Bover, Olympia, 1995. "Another look at the instrumental variable estimation of error-components models," Journal of Econometrics, Elsevier, vol. 68(1), pages 29-51, July.
    3. Colin A. Carter & Aaron Smith, 2007. "Estimating the Market Effect of a Food Scare: The Case of Genetically Modified StarLink Corn," The Review of Economics and Statistics, MIT Press, vol. 89(3), pages 522-533, August.
    4. Thompson, Samuel B., 2011. "Simple formulas for standard errors that cluster by both firm and time," Journal of Financial Economics, Elsevier, vol. 99(1), pages 1-10, January.
    5. Dubofsky, David A, 1991. "Volatility Increases Subsequent to NYSE and AMEX Stock Splits," Journal of Finance, American Finance Association, vol. 46(1), pages 421-431, March.
    6. Bollerslev, Tim, 1986. "Generalized autoregressive conditional heteroskedasticity," Journal of Econometrics, Elsevier, vol. 31(3), pages 307-327, April.
    7. Nickell, Stephen J, 1981. "Biases in Dynamic Models with Fixed Effects," Econometrica, Econometric Society, vol. 49(6), pages 1417-1426, November.
    8. Carlos Martins-Filho & Feng Yao & Maximo Torero, 2015. "High-Order Conditional Quantile Estimation Based on Nonparametric Models of Regression," Econometric Reviews, Taylor & Francis Journals, vol. 34(6-10), pages 907-958, December.
    9. John C. Driscoll & Aart C. Kraay, 1998. "Consistent Covariance Matrix Estimation With Spatially Dependent Panel Data," The Review of Economics and Statistics, MIT Press, vol. 80(4), pages 549-560, November.
    10. Ohlson, James A. & Penman, Stephen H., 1985. "Volatility increases subsequent to stock splits: An empirical aberration," Journal of Financial Economics, Elsevier, vol. 14(2), pages 251-266, June.
    11. Ahmad, Khurshid & Han, JingGuang & Hutson, Elaine & Kearney, Colm & Liu, Sha, 2016. "Media-expressed negative tone and firm-level stock returns," Journal of Corporate Finance, Elsevier, vol. 37(C), pages 152-172.
    12. Han, Chirok & Phillips, Peter C. B., 2010. "Gmm Estimation For Dynamic Panels With Fixed Effects And Strong Instruments At Unity," Econometric Theory, Cambridge University Press, vol. 26(1), pages 119-151, February.
    13. 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.
    14. Manuel Arellano & Stephen Bond, 1991. "Some Tests of Specification for Panel Data: Monte Carlo Evidence and an Application to Employment Equations," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 58(2), pages 277-297.
    15. Joseph E. Engelberg & Christopher A. Parsons, 2011. "The Causal Impact of Media in Financial Markets," Journal of Finance, American Finance Association, vol. 66(1), pages 67-97, February.
    16. Fama, Eugene F, 1991. "Efficient Capital Markets: II," Journal of Finance, American Finance Association, vol. 46(5), pages 1575-1617, December.
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    Keywords

    Agricultural and Food Policy; Agricultural Finance; Environmental Economics and Policy; Financial Economics;
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