Análise da concentração do mercado de autosserviço supermercadista brasileiro entre 2009 e 2018

Abstract

This work aims to analyze the market concentration of the supermarket self-service sector in Brazil between 2009 and 2018, assuming the possibility of a strong market concentration and, consequently, market power. Data were collected from the Brazilian Association of Supermarkets (ABRAS) in partnership with the specialized consultancy ACNilsen, available in the ABRAS / SuperHiper Ranking, from the largest gross sales retailers that operated in Brazil during the analysis period. The usual three market concentration metrics were used: Market Share, Concentration Ratio CR(k) and the Hirschman-Herfindahl Index (HHI). It was found that the Brazilian supermarket sector presented a level of concentration considered low, especially when considering that only the group of the twenty largest companies has a really relevant market position at national level with 59.27% of average participation in the period. The results also show that the sector underwent a reduction in the level of concentration in 2016 and 2017. For the performance of the companies that make up the market, an analysis was made of Store Billing and Square Meter Billing as indicators of efficiency. . Additionally, using the same data and measures, an exercise was made considering the merger between the two market leaders, Grupo Pão-de-Açúcar and Carrefour, which occurred in 2011. The results showed a significant increase in the concentration in this market.