We consider a joint inventory-pricing control problem in a single-product, periodic-review, dual-supplier inventory system. The two suppliers have different lead times. One expedited supplier offers instantaneous replenishment, and one regular supplier requires an L-period lead time for...

We investigate a robust version of the portfolio selection problem under a risk measure based on the lower-partial moment (LPM), where uncertainty exists in the underlying distribution. We demonstrate that the problem formulations for robust portfolio selection based on the worst-case LPMs of...

Investment could be costly for several reasons. The most significant contributor, undoubtedly, goes to bad market timing. Investors thus have to consider market timing strategies, i.e., to strategically shift the funds completely between risky and risk free assets after analyzing market...

This paper revisits the efficiency of a rational expectations equilibrium model of a competitive market from the perspective of the incentive to social communication. The classical result tells us that the equilibrium price perfectly reveals all dispersed information in the market when the...

We investigate reference point formation in a social network of multiple investors and study its impact on wealth growth and inequality under a framework of Prospect Theory. The reference point of each individual investor contains both personal and social components. Whereas the personal...