Antitrust Chronicle®

Dear Readers,   This Chronicle examines an area of merger analysis that continues to evolve rapidly: the assessment of unilateral effects and the economic frameworks used to evaluate them. As...

The rise of unilateral effects analysis, as quantified by merger simulation, creates the potential to balance anticompetitive effects and efficiencies and improve the merger review process.  Unfortunately, sophisticated economic models...

Many companies saw their share prices decline recently as gen AI tools fundamentally transform their industry. In this article, we examine how such dynamics should be factored into merger assessments....

Traditional merger assessment has focused on unilateral effects (or non-coordinated effects) stemming from price increases. While non-price unilateral effects resulting in lower quality have always been theoretically recognized, albeit not...

This paper provides a framework and practical guidance for assessing ecosystem theories of harm in merger control. Several recent merger investigations relating to digital ecosystems have raised novel, and fundamentally...

This article reviews how capacity constraints affect unilateral price effects in horizontal mergers. When capacity constraints fall on merging firms, they mitigate price effects, whereas constraints on non-merging firms enhance...

Dear Readers,   This Chronicle examines the increasingly tight interconnection between AI infrastructure, energy systems, and competition law. As data centers scale at unprecedented speed, the competitive questions they raise...

This article explores the competition law implications of AI-driven growth in data centers, emphasizing the sector’s rapidly expanding energy footprint and its broader environmental and infrastructural consequences. The authors identify...

In recent years, the combination of increased demand for energy resources together with supply-side shocks from a volatile federal energy and trade policy landscape has resulted in critical equipment price...

Rising U.S. energy prices have brought renewed focus to mergers between electricity generators. After briefly describing the structure of U.S. electricity markets we describe and evaluate the electricity merger review...

Power supply is the lifeblood of any data center. Securing a viable grid connection is both essential and increasingly challenging, particularly in a number of jurisdictions (such as the UK...

For nearly fifteen years, DOJ deferred to FERC and state regulators on electricity merger review. That posture ended on December 5, 2025, when the Antitrust Division—joined by the Attorney General...