Remedies to informational asymmetries in stock markets
Like many other markets, stock markets are characterised by asymmetric information. If investors cannot distinguish high-quality from low-quality securities, they will value all securities as average resulting in the well known market for lemons. This decreases the allocative efficiency and social welfare by guiding resources to the least good investment opportunities. How can high-quality listed companies communicate with stock markets to distinguish themselves from low-quality listed companies? Although proponents of mandatory disclosure rules in securities markets will answer this question with far-reaching governmental regulation, it is jumping to conclusions and skipping devices that signal the true quality of the investment opportunities to the stock market. This book analyses the functioning of stock markets, in particular the dissemination of price-sensitive information on these markets. In order to evaluate the legal rules governing the dissemination of information from an economic perspective, an operational framework is needed to assess the currentdisclosure regulation with respect to allocative efficiency. The book replaces vague legal goals of securities regulation, such as investors protection, by financial economic concepts, such as market efficiency and market liquidity. To enhance allocative efficiency, the book analyses the relevancy of mandatory disclosure rules, the use of trading halts in disseminating information during the opening hours of a stock exchange, the use of selective disclosure and the regulation of insider trading.