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O Excesso de Confiança dos Produtores de Milho no Brasil e o Uso de Contratos Futuros

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Listed:
  • Cruz Júnior, José César
  • Irwin, Scott H.
  • Marques, Pedro Valentim
  • Martines-Filho, Joao Gomes
  • Bacchi, Mirian Rumenos Piedade

Abstract

O objetivo deste artigo foi identificar sinais de excesso de confiança nos preços entre produtores de milho do Sul e do Centro-Oeste do Brasil. Entre outubro e novembro de 2008, 90 produtores foram selecionados para responderem questões relacionadas a seus conhecimentos do mercado futuro e a suas expectativas de preços. Uma grande parte dos entrevistados respondeu que não negociava contratos futuros por não possuir informação suficiente para isso. Os resultados revelaram que os produtores foram descalibrados quando estimaram os preços esperados na forma direta e indireta. Além disso, para a maior parte dos respondentes, a variância subjetiva obtida por meio dos questionários foi estatisticamente inferior à variância do mercado. Isto mostra que os produtores possuem uma percepção de risco inferior ao risco de mercado. Por fim, o artigo conclui que o efeito de excesso de confiança pode, parcialmente, explicar o baixo uso do mercado futuro de milho por parte dos produtores brasileiros, para garantir a proteção de preço do produto........This paper aimed to identify signs of overconfidence among corn producers in the Southern and Central-Western regions in Brazil. Between October and November 2008, 90 farmers were chosen to answer questions regarding their knowledge of futures markets and price expectations. Most part of agents surveyed answered that they do not trade futures contracts because they do not have enough information. Results showed that respondents were miscalibrated when estimating directly-stated and the indirectly-stated expected prices. In addition, for most respondents, subjective variance for corn proves to be significantly less than the market variance, implying that producers perceive a risk that is lower than that of the market. Finally, the paper concludes that the overconfidence effect can partially explain the low use of futures markets by Brazilian corn producers to hedge their production.

Suggested Citation

  • Cruz Júnior, José César & Irwin, Scott H. & Marques, Pedro Valentim & Martines-Filho, Joao Gomes & Bacchi, Mirian Rumenos Piedade, 2011. "O Excesso de Confiança dos Produtores de Milho no Brasil e o Uso de Contratos Futuros," Brazilian Journal of Rural Economy and Sociology (Revista de Economia e Sociologia Rural-RESR), Sociedade Brasileira de Economia e Sociologia Rural, vol. 49(2), pages 1-22, June.
  • Handle: RePEc:ags:rdecag:152575
    DOI: 10.22004/ag.econ.152575
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    Cited by:

    1. Julyerme M. Tonin & Carlos M. R. Vieira & Rui M. de Sousa Fragoso & João G. Martines Filho, 2020. "Conditional correlation and volatility between spot and futures markets for soybean and corn," Agribusiness, John Wiley & Sons, Ltd., vol. 36(4), pages 707-724, October.

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    Agribusiness;

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