Firms differ in the extent to which they "pass through" changes in exchange rates into foreign currency prices and in their "exposure" to exchange rates-the responsiveness of their profits to changes in exchange rates. Because pricing affects profitability, a firm's pass-through and exposure...

The presence of any friction in financial markets qualitatively changes the nature of the optimization problem faced by an investor. It requires one to either act or do nothing, an issue which, of course, does not arise in frictionless situations. The investor considered here accumulates wealth...