4 papers · 1 filter
Demand Curvature and Pass-Through in Multiproduct Oligopoly
Paul S. Koh
Economic interventions change firms' pricing incentives, but their effects depend on how those incentives propagate across products and firms. This paper develops tractable charact…
Antitrust on Aisle Five: How Well Do Divestiture Remedies Work?
Xiao Dong, Paul Koh, Devesh Raval +2
Antitrust authorities frequently rely on structural divestitures to address competitive concerns raised by mergers. Using census-level establishment data and proprietary transactio…
Concentration-Based Inference for Evaluating Horizontal Mergers
Paul S. Koh
Antitrust authorities routinely rely on market concentration measures to assess the potential adverse effects of mergers on consumer welfare. Using a first-order approximation argu…
Market Definition: A Sensitivity Analysis
Paul S. Koh
Market definition holds significant importance in antitrust cases, yet achieving consensus on the correct approach remains elusive. As a result, analysts routinely entertain multip…