Legal Insider Trading in Europe Makes the Case for Enforcement

Evidence about the relative importance of private and public enforcement of securities laws for financial markets is inconclusive. The recently introduced Market Abuse Directive (MAD) (2003/6/EC) sets a European Union (EU) standard for regulation of insider dealing and market manipulation. Under Article 18 of the MAD, EU member states had to implement by October 12, 2004, local regulations that require the disclosure of corporate insider trading. The regulation represents a unique natural experiment that was introduced not in response to a specific case but as a mandate (exogenously) to EU countries (and Switzerland) simultaneously. This experiment allows us to examine … Read more