The aim of this paper is to detect periods in which two currencies can be classified as being theʺsameʺ asset. Two currencies can be treated as the same asset if their exchange rates vis-`a-vis the same base currency are cointegrated with a cointegration vector that is consistent with the...

This paper proposes an explanation of the shifts in the volatility of exchange rate returns that relies on standard present value exchange rate models. Agents are uncertain about the true data generating model and deal with the model uncertainty by making inference on the models and their...

A contingent claims valuation model which allows to highlight the implications of program trading in spot markets for the pricing of European-style foreign currency options and for the volatility strike structure implicit in these contracts is devoloped. The curvature of the volatility strike...