We evaluate the impact of European antitrust policy by analyzing the stock market response to investigation … announcements, infringement decisions, and appeals. We examine a sample of 253 companies involved in 118 European antitrust cases … European antitrust action. The magnitude of the stock market response depends on the fine, the duration of the infringement …

Antitrust enforcement efforts in the United States and abroad have been ramped up in high-tech industries, rekindling … stale and largely unresolved debates concerning the appropriate role of antitrust enforcement in high-tech markets. Like the …-sweeping assertions as to the appropriate role of antitrust in these markets are common, traditional empirical approaches have left …

/disclosure decisions. We find that stronger antitrust enforcement around the world causes domestic U.S. firms to exhibit lower levels of …