The study investigates the information content of insider trading transactions employing different signal definitions. Using directors' open market dealings during the period 1999-2000 for FTSE100 companies and new extensions of the event study methodology, the evidence suggests directors have,...

This paper analyses the equilibrium and welfare properties of an economy characterized by uncertainty and payoff externalities using a general model that nests several applications. Agents receive a private signal and an endogenous public signal, which is a noisy aggregate of individual actions...