For the first time, empirical estimates of concentration in the British construction sector are provided. The research adds value to published DETR/DTI data on the structure of British construction by applying a novel technique for estimating the concentration ratio proposed by McCloughan and...

Using a variance decomposition analysis the empirical literature on strategic management has determined the percentages of total rates of return’s variance due to corporation, market and business-unit effects. However, we still do not know what specific characteristics of corporations and...

This paper presents an extension of the analysis of the geographic dimension of trade, by examining the trading patterns of individual firms. Aggregate data does not tell us if a sector is geographically diversified because there are many exporting firms, each of which specialises in a separate...

This paper considers a theoretical model of n asymmetric firms that reduce their initial unit costs by spending on R&D activities. In accordance with the Schumpeterian hypotheses, more efficient (bigger) firms spend more on R&D and this leads to a more concentrated market structure. This calls...

The classical price competition model (named after Bertrand), prescribes that in equilibrium prices are equal to marginal costs. Moreover, prices do not depend on the number of competitors. Since this outcome is not in line with real-life observations, it is known as the "Bertrand Paradox". Many...

In media markets, the value of advertisement exposure depends on circulation, and media consumers’ valuation is affected by advertising. This paper analyzes media market competition in a duopoly framework. There exist symmetric and asymmetric equilibria in terms of firm size. There is less...

In this paper we study concentration in the European Internet upstream access market. Measurement of market concentration depends on correctly defining the market, but this is not always possible as Antitrust authorities often lack reliable pricing and traffic data. We present an alternative...

We investigate whether it is likely that the Swiss competition authority (WEKO) will approve the acquisition of Denner (the number 3 retailer in Switzerland) by Migros (the number 1 retailer). We argue that the decisions made by the European competition authorities are helpful guidelines in this...