Resumen de Prices and Market Structure: an Empirical Analysis of the Supermarket Industry in Chile

Loreto Lira, Magdalena Ugarte, Rodrigo Vergara

• This paper investigates empirically the relationship between market structure and consumer prices in the supermarket industry in Chile. A panel of monthly data from 16 cities in the period January 1998�September 2006 was used. It was found that the more concentrated the industry is in a city, the higher the prices, while the participation of major national chains in cities tends to lower prices. Moreover, the dominant local chain was found to behave differently depending on whether or not one of the national chains was present in the city.

  Finally, we find that prices rise when a national chain acquires another chain and both were previously in a city (inmerge) while if only one of the two was present (outmerge), prices fall