It is often assumed that strong securities markets require good legal protection of minority shareholders. This implies both “good” law—principally, corporate and securities law—and enforcement, yet there has been little empirical analysis of enforcement. We study private enforcement of corporate law in two common‐law jurisdictions with highly developed stock markets, the United Kingdom and the United States, examining how often directors of publicly traded companies are sued, and the nature and outcomes of those suits. We find, based a comprehensive search for filings over 2004–2006, that lawsuits against directors of public companies alleging breach of duty are nearly nonexistent in the United Kingdom. The United States is more litigious,...