Shares trading in the Bolsa mexicana de Valores do not seem to react to company news. Using a sample of Mexican corporate news announcements from the period July 1994 through June 1996, this paper finds that there is nothing unusual about returns, volatility of returns, volume of trade or...

Using the artifice of a hypothetical trial, this article presents the cases for and against insider trading. Both sides in the trial produce as evidence the salient points made in more than 100 years of literature on insider trading. The initial days of the trial focus on the issues raised in...

This paper argues, both theoretically and empirically, that sometimes no securities law may be better than a good securities law that is not enforced. The first part of the paper formalizes the sufficient conditions under which this happens for any law. The second part of the paper shows that a...