This paper extends the classic Samuelson (1970) and Merton (1973) model of optimal portfolio allocation with one risky asset and a riskless one to include the effect of the skewness. Using an extended version of Stein's Lemma, we provide the explicit solution for optimal demand that holds for...

According to a revised definition of Samuelson, a risk-averse agent is called a coward whenever he refuse even a small portion of a risky gamble exhibiting a positive expected payoff. This property may cause the invalidation of some of the basic theorems of the insurance and finance theory. As...

According to the behavioral finance theory, agents act coherently with the Kahneman and Tversky prospect paradigms and may violate those dictated by the rational expected utility. From the point of view of real financial markets' applications, a key question concerns how to eliciting the...