Scholars and antitrust enforcers have raised concerns about anticompetitive effects that may arise when institutional investors hold substantial stakes in competing firms. Their concern rests on empirical evidence that such common concentrated ownership is associated with higher prices and lower...

Scholars and courts have long debated whether and when "parallel pricing" — adoption of the same price by every firm in a market — should be considered a violation of antitrust law. But there has been a comparative neglect of the importance of "parallel exclusion" — conduct, engaged in by...

This essay considers antitrust objections to recent settlements of intellectual property litigation. Part I examines the Google Book Search settlement, which resolves a copyright dispute between Google and a class of authors and publishers, including the creators of so-called orphan works. It...