In Germany a public discussion on the power of banks has been going on for decades now with the term power having at least two meanings. On the one hand, it denotes the power of banks to control public corporations through direct shareholdings or the exercise of proxy votes this is the power of...

This paper examines empirically the relationship between innovation and market structure within a simultaneous framework at the industry level of aggregation. We use a model in which R&D affects both, demand and cost conditions. An optimization process leads to optimal industry R&D expenditure...

The German energy transition massively alters the market structure of electricity supply and forces incumbent electric utilities to rethink their business strategies. We analyze three main developments that undermine the former market dominance of the “Big 4” incumbents in Germany. First,...

The correct definition of the product market and of the geographic market is a prerequisite for assessing market structures in antitrust cases. For hospital markets, both dimensions are controversially discussed in the literature. Using data for the German hospital market we aim at elaborating...

The correct definition of the product market and of the geographic market is a prerequisite for assessing market structures in antitrust cases. For hospital markets, both dimensions are controversially discussed in the literature. Using data for the German hospital market we aim at elaborating...

This paper investigates how competition and firm size affect the relationship between market uncertainty and Ramp;D investment. We use an intuitively appealing measure of firm-specific uncertainty along with panel data to show that firms invest less in current Ramp;D as uncertainty about market...

The geographical definition of markets is a crucial challenge for economists. With the availability of multiple tools to compare prices, the idea of market definition is entering a new era as it infiltrates the digital sphere. Since December 1st, 2013 the market transparency unit of the Federal...

Most of the literature on retail fuel markets find high-frequency and asymmetric price cycles. This is typically explained by the model of Edgeworth price cycles. A key element of this model is that prices fall to marginal costs during a cycle. It seems challenging to address this assumption...

This paper examines empirically the relationship between innovation and market structure within a simultaneous framework at the industry level of aggregation. We use a model in which R&D affects both, demand and cost conditions. An optimization process leads to optimal industry R&D expenditure...

Finding good products often requires costly screening effort. A skilled intermediary can represent multiple consumers, generating economies of scale in effort costs. However, consumers still need to find skilled intermediaries, re-creating the original screening friction. I provide a model of...