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...

Economic theory suggests that sometimes the enforcement of insider trading laws may be more important than the existence of these laws. Is that true? I find that at the end of 2022: (1) Insider trading laws exist in most countries; they are not enforced in many countries; (2) firms in countries...

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...