文章基本信息

标题：Eficiência dos mercados futuros de commodities agrícolas aplicando-se o teste de cointegração
本地全文：下载
作者：Jorge Harry Harzer ; Carol Thiago Costa ; Wesley Vieira da Silva 等
期刊名称：Revista de Administração da UFSM
印刷版ISSN：1983-4659
出版年度：2012
卷号：5
期号：2
页码：336-353
DOI：10.5902/198346595432
语种：Portuguese
出版社：Universidade Federal de Santa Maria
摘要：This article aims at testing the weak form of efficiency of the commodity futures market in Arabica coffee farming using the cointegration technique in order to check if the current futures prices are biased estimators of spot prices expected for the future. Thereto it uses the futures prices time series from January 2005 to May 2011, which were collected in the Commodities and Futures Exchange - BM & F and spot prices, calculated by CEPEA / ESALQ / USP. Dickey and Fuller’s ADF tests are the metrics used to detect the presence of unit root and Johansen’s cointegration test is used to verify the existence of a long term relationship. The results indicated the non-stationarity of price series besides the presence of cointegration. However, regression parameters testing α = 0 e β = 1 proves that weak efficiency and non-biased found statistical evidence of non-market efficiency. Moreover, the presence of a bias indicating the existence of a premium associated with risk was also found.
其他摘要：This article aims at testing the weak form of efficiency of the commodity futures market in Arabica coffee farming using the cointegration technique in order to check if the current futures prices are biased estimators of spot prices expected for the future. Thereto it uses the futures prices time series from January 2005 to May 2011, which were collected in the Commodities and Futures Exchange - BM & F and spot prices, calculated by CEPEA / ESALQ / USP. Dickey and Fuller’s ADF tests are the metrics used to detect the presence of unit root and Johansen’s cointegration test is used to verify the existence of a long term relationship. The results indicated the non-stationarity of price series besides the presence of cointegration. However, regression parameters testing α = 0 e β = 1 proves that weak efficiency and non-biased found statistical evidence of non-market efficiency. Moreover, the presence of a bias indicating the existence of a premium associated with risk was also found.
关键词：Administração; Finanças