Modern Portfolio Theory, standard asset pricing models and the concept of rational decision makers in efficient markets have major limitations as systems for modeling investor behavior and prices of financial assets. Financial market participants are not a uniform group of rational investors....

While there has been a growing interest in the role that company affect plays in investment decisions, there have been few empirical examinations of the issue. The specific purpose of this article is to provide empirical evidence of whether an individual investor's affect towards a company...

This paper assessed the quantitative impact of ambiguity on historically observed financial asset returns and growth rates. The single agent, in a dynamic exchange economy, treats the conditional uncertainty about the consumption and dividends next period as ambiguous. We calibrate the agent's...

In a recent article in the Financial Analysts Journal, Zvi Bodie [1995] uses a clever insurance paradigm as the justification for assessing stocks' risk as a function of the investment horizon. He concludes that stocks' risk increases monotonically with the investment horizon. This is...