Antitrust Chronicle®

Dear Readers,   This edition of the Chronicle is devoted to computational antitrust — a term that, five years ago, still had to be defined before it could be discussed,...

In five years, computational antitrust has gone from a proposition to a field. More than eighty agencies now use computational tools, a literature has formed around them, a scattered set...

This article turns to a detection problem that computational methods are unusually well placed to solve. Where seller-side algorithmic collusion leaves public price signals that agencies can audit, AI agents...

This article examines the European Commission’s Draft Merger Guidelines, published for consultation on 30 April 2026, and their extension of merger control from specific innovation competition — rivalry around identifiable...

This article turns to the theory that computational antitrust presupposes. Every decision to structure market data — which agents, which relationships, which time periods — already assumes an account of...

Though now a part of the modern vernacular, machine learning mechanisms that motivate algorithmic pricing remain “black box” terms to many antitrust practitioners and legal scholars alike. Such informational barriers...

Concerns about algorithmic collusion are often driven by the belief that increasingly sophisticated AI systems are more likely to autonomously learn to collude. This article reviews a growing body of...

Dear Readers,  This annual edition of the Chronicle once again gathers contributions from leading voices within the state attorneys general community. If last year's edition reflected on the states' enforcement...

In this month’s edition of CPI Talks, we speak with Tennessee Attorney General Jonathan Skrmetti about the states’ landmark verdict against Live Nation and Ticketmaster, the independent role of state...

This article examines an overlooked aspect of the Live Nation trial: Judge Subramanian's instructions to the jury on California's Unfair Competition Law. Because UCL claims are ordinarily tried to the...

This article traces the past, present, and possible future of the Tunney Act, from the backroom settlements of the 1950s and the Nixon-era ITT Affair that prompted its enactment, through...

In these times of uncertainty, the states have stepped into a more meaningful role in competition policy in the United States. But effective competition policy would best aim to build...