We conduct a regional analysis of the relationship between market concentration and price dynamics in the grocery retail sector, focusing on a sample of five categories of goods belonging to the 12 COICOP aggregation and on a panel of countries that includes Germany, Spain, Finland, Italy,...

In this note, we provide a cleanly identified and empirically relevant example of a setting where an increase in market concentration caused lower prices and markups. This result contradicts some widely used models of competition and highlights the value of richer models of firm behavior and...

In this note, we provide a cleanly identified and empirically relevant example of a setting where an increase in market concentration caused lower prices and markups. This result contradicts some widely used models of competition and highlights the value of richer models of firm behavior and...

This paper investigates market concentration in the US retail sector. We use store and household-level consumption micro-data from 2004-2019 to document four facts linked by a decomposition: 1) rising national concentration, 2) negligible change in regional concentration, 3) rising household...