2019-07-092019-07-092012-03FRAGA, Gilberto Joaquim; SILVA NETO, Waldemiro Alcântara da. Eficiência no mercado futuro de commodity: evidências empiricas. Revista Econômica do Nordeste, v. 42, n. 1, p. 125-137, jan./mar. 2011.0100-4956e-2357-9226http://repositorio.bc.ufg.br/handle/ri/17755This paper verifies the existence of a long-run relationship and tests the hypothesis of market efficiency between the spot prices and BM&F future price of soybean. The strategy adopted to achieve the objectives was to test co-integration and mechanism of error correction to test the market efficiency without implying the absence of the risk premium. The results suggest that is not possible to accept the hypothesis that the market is efficient in the short-term price formation in the important regions, however, there is a longrun relationship between prices.porAcesso AbertoEficiência de mercadoPreço futuroCointegraçãoSojaMarket efficiencyFuture priceCo-integrationSoyArtigo