Análise de risco para o café em Minas Gerais
Data
2006-07
Título da Revista
ISSN da Revista
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Editor
Universidade Federal de Viçosa
Resumo
O café é um dos principais produtos da economia mineira, e em algumas regiões específicas pode-se notar maior intensidade na sua importância produtiva; con- tudo, em qualquer região os agentes envolvidos nesse mercado sempre se vêem diante de um problema: o nível de risco a que estão se expondo. Dessa forma, seria de grande utilidade uma ferramenta que avaliasse o risco que cada agente absorve. Assim, este trabalho indicou a medida do risco assumido pelos agentes envolvidos no mercado de café do estado, tendo como base os preços pagos na região sul mineira, a maior produ- tora, por meio de dois modelos do Value at Risk (VaR): o Normal e o de Simulação Histórica. Os resultados indicam que o risco absorvido pelos agentes de mercado chega a ser de 17,28% com 95% de confiança e de 24,60% com 99% de confiança, ambos para uma exposição de trinta dias, calculados pelo VaR Simulação Histórica, que se mostrou mais confiável. Além disso, a comparação com o cálculo do VaR do Ibovespa e do dólar evidenciou que o café apresenta maiores taxas de risco.
The coffee is one of the most important products in the economy of Minas Gerais. In some specific places it has a great importance in the local production, but in any place the economic players involved in that market have the same trouble: the share of risk taken by them. Therefore, would be really important, and useful, to calculate the risk share of each player. Than, this article showed the risk amount absorbed by the players in the coffee market of Minas Gerais, based in the prices paid in the south of that state, the greatest region producer, trough two models of Value at Risk (VaR), the Normal Model and the Historic Simulation Model. The results shows a risk absorbed about 17,28%, with 95% of sure, and 24,60% with 99% of sure, both of them in a thirty days exposure, calculated by the Historic Simulation VaR Model, which was the most trustable, with less exceptions. Besides, the compare between the risks of coffee, Ibovespa and dollar, all of them calculated by VaR Historic Simulation, evidence the coffee as the most risk full of them, with the greatest amount of risk value.
The coffee is one of the most important products in the economy of Minas Gerais. In some specific places it has a great importance in the local production, but in any place the economic players involved in that market have the same trouble: the share of risk taken by them. Therefore, would be really important, and useful, to calculate the risk share of each player. Than, this article showed the risk amount absorbed by the players in the coffee market of Minas Gerais, based in the prices paid in the south of that state, the greatest region producer, trough two models of Value at Risk (VaR), the Normal Model and the Historic Simulation Model. The results shows a risk absorbed about 17,28%, with 95% of sure, and 24,60% with 99% of sure, both of them in a thirty days exposure, calculated by the Historic Simulation VaR Model, which was the most trustable, with less exceptions. Besides, the compare between the risks of coffee, Ibovespa and dollar, all of them calculated by VaR Historic Simulation, evidence the coffee as the most risk full of them, with the greatest amount of risk value.
Descrição
Palavras-chave
Gestão de risco, VaR
Citação
RUGANI, F. L.; SILVEIRA, S. F. R. Análise de risco para o café em Minas Gerais. Revista de Economia e Agronegócio, Viçosa, v. 4, n. 3, p. 343-364, jul./set. 2006.