Survey of Literature on Portfolio Theory

The logical derivation of the two-factors model (The CAPM) is not empirically testable. This has paved the way for new treatments of asset pricing. However, the deterministic approach taken by most economists has prevented them to create a more useful treatment to the problems of asset pricing and diversification. Hence, the new approach contained in the post Keynesian literature has an opportunity in the formulation of a solution to both problems based on the notion of fundamental uncertaint