We conduct an experiment in which assets of lower volatility risk are sequentially added to the investment opportunity set (IOS) of a fixed investment horizon. Econometric spanning tests show that the limiting IOS is the linear boundaries defined by the limiting IOS asymptotes, implying more...

Empirical evidences regarding the association of idiosyncratic volatility and stock returns are inconsistent with the Capital Asset Pricing Model (CAPM), which implies that idiosyncratic risk should not be priced because it would be fully eliminated through diversification. Using Exponential...

This article proposes a theoretical testable capital asset pricing model for partially segmented markets. We establish that if some investors do not hold all international assets because of direct and/or indirect barriers, the world market portfolio is not efficient and the traditional...