This paper analyzes the equity-portfolio recommendations made by investment newsletters. The dataset spans 16 years, is free of survivorship and back-fill biases, and includes the recommendations of 145 different newsletters. Overall, there is no significant evidence of superior stock-picking...

better understand when mixed equilibria might arise within populations of interact acting agents, we examine a model of smoothed fictitious play that is designed to capture Harsanyi's "Purification", view of mixed equilibria in a setting with a large population of agents. Our analysis concerns...