Central banks often use certain concentration indices in their official reports to determine the degree of intensity of competition, of which the most common are the concentration ratio and the Herfindahl-Hirschman index. It is important to emphasize that when calculating the value of these...

This paper explores the impact of technological change on industry concentration and the underlying firm dynamics. In the agent-based model EURACE@Unibi I implement a paradigm shift in the technological frontier - a shift from a slow to a fast growing regime. The analysis shows that the...

Nach einem Gründungsboom der Leasinggesellschaften in Deutschland während der 90er Jahre haben sich zunehmend Konzentrationstendenzen innerhalb der Branche durchgesetzt. Es bilden sich verstärkt große Leasinggesellschaften heraus. Neben Synergieeffekten und Spezialisierungsvorteilen sind vor...

In this paper we investigate the existence of a two-tier medical system in the German acute care hospital sector using data from a survey of 483 German hospitals. The focus of our analysis lies on the impact of hospital concentration on the probability of discrimination of patients with...

In this paper, we analyze the effects of trade, concentration and ownership on the pricing behavior of firms in two transition countries, Bulgaria and Romania. We use an extensive dataset of more than 3000 firms and sector level infirmation to estimate the effects of these three factors on the...

We find that IPOs issued in more competitive, and more highly leveraged, industries underperform in the three years following their issuance. Both results are economically large, and are robust to numerous controls. We conduct several tests to trace the economic sources of this underperformance....

We find evidence that the underperformance of some IPOs, and firms in concentrated industries, have common empirical roots. The most likely explanation for both is a confluence of two well known rational theories, which predict that: (1) entrepreneurs in concentrated industries optimally time...