Three firms dominate the target date fund market, constituting an oligopoly. One firm – Vanguard – owns 72% of the passive TDF market, constituting a monopoly. Oligopolies and monopolies are bad. They ...

Caves, R. E., and M. E. Porter. "Market Structure, Oligopoly and the Stability of Market Shares." Journal of Industrial Economics 26, no. 4 (June 1978): 289–313.

Welfare effects of entry regulations are theoretically ambiguous in differentiated product markets. We use a dynamic oligopoly model of entry and exit with store-type differentiation and static price ...

Since the start of 2024, competition authorities in the US and UK have set their sights on the worryingly close links between generative artificial intelligence (AI) firms and their wealthy tech giant ...

We consider the relationship between prices and market structure for office supply superstores in the U.S. which was central to the Federal Trade Commission's opposition to the merger of Staples and ...

(Author's disclosure: The author consults for a fantasy sports provider that is in current litigation against DraftKings, a company mentioned in this article). In what could be extremely exciting news ...