Recital 24

(24)Prompt and fair disclosure of information to the public enhances market integrity, whereas selective disclosure by issuers can lead to a loss of investor confidence in the integrity of financial markets. Professional economic actors should contribute to market integrity by various means. Such measures could include, for instance, the creation of "grey lists", the application of "window trading" to sensitive categories of personnel, the application of internal codes of conduct and the establishment of "Chinese walls". Such preventive measures may contribute to combating market abuse only if they are enforced with determination and are dutifully controlled. Adequate enforcement control would imply for instance the designation of compliance officers within the bodies concerned and periodic checks conducted by independent auditors.