Rosangela Aparecida Soares Fernandes

Poder de mercado no segmento de distribuição de gasolina C: uma análise a partir da Nova Organização Industrial Empírica

This study aims to assess the degree of market power in the distribution sector gasoline C, in Brazilian regions, from 2002 to 2008. To this end, based on the Theory of the New Empirical Industrial Organization (NOIE), specifically, the model proposed by Bresnahan (1982) and Lau (1982). A dynamic version of the model was also estimated. The results indicated that, except for the northern region to the static model, the distributors of gasoline C does not act as price takers. At the other extreme, the hypothesis of perfect collusion between them was rejected. It was found that, in many regions, parameters proved to be sufficiently low, suggesting that the distributors have high competition with each other.

Delimitação de mercado relevante de gasolina comum e álcool hidratado nas regiões brasileiras: uma análise via testes econométricos

This paper attempts to establish the relevant product market for liquid fuels (regular gasoline and hydrated ethanol) in regions of Brazil, from January 2002 to December 2008. To this end, we use unit root and cointegration, variance decomposition of forecast errors and Granger causality tests. The cointegration test results reveal that the two fuels compete with each other in regional markets. Changes in the prices of any of them can produce substitution, so that price shocks are only transitory. It was found that the trend in gasoline prices is explained largely by its own changes and has relatively high explanatory power for the variability of the prediction error decomposition of hydrated ethanol, and that this trend is gradually increasing over the months. In addition, the price of regular gasoline Granger-causes the price of hydrated ethanol. However, the opposite is not true.