Our analysis starts from the observation that with progressive consolidation in retailing and the spread of private labels, retailers increasingly take over functions in the vertical chain. Focusing on innovation, we isolate various reasons for why when a large retailer grows in size, this can...

Im Rahmen der Sektoruntersuchung des Großhandelsmarktes für Strom hat das Bundeskartellamt 2011 die Auffassung dargelegt, dass marktbeherrschende Unternehmen keine Preisgebote oberhalb der Grenzkosten abgeben dürfen. In dem vorliegenden Beitrag werden die Auswirkungen einer solchen...

We analyze the impact of partial public ownership (PPO) on managerial incentives. A novelty of the paper is that it explicitly considers competition in the product market. We find that PPO negatively affects managerial incentives when all firms are partially owned by the government. When...

We analyze the effects of synergies from horizontal mergers in a Cournot oligopoly where principals provide their agents with incentives to cut marginal costs prior to choosing output. We stress that synergies come at a cost which possibly leads to a countervailing incentive effect: The merged...

The German reserve power market was subject to important regulatory changes in recent years. A new market design was created by synchronization and interconnection of the four control areas. In this paper, we analyze whether or not the reforms led to lower prices for minute reserve power (MRP)....

We analyze horizontal mergers when the acquirer holds a passive partial ownership stake (PPO) in the target firm prior to the merger. We show that a PPO reduces the minimal synergy level necessary to make a merger beneficial for consumers. It follows that an antitrust authority ignoring existing...

We analyze the efficiency defense in merger control. First, we show that the relationship between exogenous efficiency gains and social welfare can be non-monotone. Second, we consider both endogenous mergers and endogenous efficiencies and find that merger proposals are largely aligned with a...

We analyze the impact of passive partial ownership (PPO) on horizontal mergers. We show that antitrust authorities ignoring the effects of previous PPO acquisitions invite sneaky takeovers: a PPO is strategically used prior to a full takeover to get a merger approved which is in fact detrimental...