Investors often control risk exposure by trading options. This article studies the optimal strategy for liquidating an option position. Under both complete and incomplete market settings, we quantify the value of optimally timing to liquidate, and identify the situations where it is optimal to...

We develop a methodology for index tracking and risk exposure control using financial derivatives. Under a continuous-time diffusion framework for price evolution, we present a pathwise approach to construct dynamic portfolios of derivatives in order to gain exposure to an index and/or market...

We examine the effect of the risk tolerance of downstream firms (i.e., customers) on the investment inefficiency of upstream firms (i.e., suppliers). Using the pilot licensing status of the CEOs as a proxy for their inherent risk tolerance, we find that customer firms led by pilot CEOs are...