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| Featured articles : Relationship between bio-fuel companies' stocks |
 Chia-Hsing Huang, Liang-Chun Ho The article studies the relationships between the stock index of bio-fuel companies and the futures prices for wheat, corn and soy bean, oil price, and Baltic Dry Index. Data are taken from January 1, 2005 to March 11, 2008 which is called the whole period. September 4, 2007 to March 11, 2008 is called the current period. We used the unit root and Johansen cointegration for the long-term relationship test and used the VECM, impulse reaction and variance analysis for the short-term relationship test. It is shown there existed long-term equilibrium relationships. During the whole period the oil price has the biggest impact. However, for the current period the corn price has the biggest impact.
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