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Option prices seem to behave in ways inconsistent with the Black-Scholes model. Implied volatility varies with the … strike price in a parabolic shape that is often called the volatility 'smile.' My objective in this paper is to identify … promising in explaining the volatility smile. Applying this to the ERM data, I find that the probability of a devaluation in the …
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This paper distinguishes exchange rate variability from exchange rate misalignments and presents statistical measures in this regard. It uses PPP as a crude approximation of equilibrium exchange rates and shows that during periods of possible misalignments, the exchange rate variability of some...
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