The temporal boundaries of a market can be critical to antitrust decisions. Enhanced transparency about the temporal dimension of market definition is relevant to many settings, not least the digital economy where market boundaries can change quickly and authorities are proposing to adopt new...

Passive holdings and cross-investments among competing companies are common phenomena in the modern marketplace. Yet under certain market conditions such investments may cause anticompetitive effects. This paper explores the economic effects of passive investments and their regulation under...

Passive holdings and cross-investments among competing companies are common phenomena in the modern marketplace. Yet under certain market conditions such investments may cause anticompetitive effects. This article explores the economic effects of passive investments and their regulation under...

Recent decades have witnessed a distinct increase in the sales and popularity of private labels. The growing market share of private labels has transformed the landscape of retail competition in developed countries. Major retailers are no longer confined to their traditional roles of purchasers...