We analyze a drastic price increase in the German auction market for reserve power, which did not appear to be driven by increased costs. Studying the market structure and individual bidding strategies, we find evidence for collusive behavior in an environment with repeated auctions, pivotal...

Die Wettbewerbssituation auf dem deutschen Bahnmarkt ist vielschichtig: Sowohl die verschiedenen Teilsegmente des Bahnmarktes als auch der intermodale Wettbewerb müssen berücksichtigt werden. Dabei besteht die Gefahr, die Wettbewerbsposition des gesamten Eisenbahnverkehrs gegenüber anderen...

We analyze a drastic price increase in the German auction market for reserve power, which did not appear to be driven by increased costs. Studying the market structure and individual bidding strategies, we find evidence for collusive behavior in an environment with repeated auctions, pivotal...

Schnellen Breitbandzugängen für möglichst viele Haushalte wird eine große Bedeutung zugemessen. Die dafür notwendige Technik erfordert allerdings relativ hohe Investitionen. Die EU und mit ihr auch Deutschland sowie die Schweiz verfolgen unterschiedliche Regulierungsregime, wobei die...

We empirically analyze the role of e-Commerce and brick-and-mortar retailers in discovering new bestsellers in the book market, using the German market as an example. Using an AR(1)-Process, we find that when a title becomes a bestseller sales increase in e-Commerce and decrease in...

Curfews present the most restrictive measure aiming to fight the spread of the COVID 19-pandemic. A somewhat weaker form are night time curfews. Night time curfews were imposed all over the world (e.g. USA, France, Germany or Argentina) and are still in force in many countries and have been even...