Event studies represent an increasingly popular method to evaluate the welfare effects of economic policy decisions. The basic idea is that stock market reactions to the announcement of policy decisions contain superior information about the welfare effects of these decisions. This paper...

Summary Dominant or apparently dominant internet platform increasingly become subject to both antitrust investigations and further-reaching political calls for regulation. While Google is currently in the focus of the discussion, the next candidate is already on the horizon - the ubiquitous...

Purpose – Despite still being younger than a decade, the theory of multisided markets has offered numerous valuable insights for the analysis of industries in which a supplier serves two distinct customer groups that are indirectly interrelated by externalities. Examples include payment...