Crash risk in currency markets

"How much of carry trade excess returns can be explained by the presence of disaster risk? To answer this question, we propose a simple structural model that includes both Gaussian and disaster risk premia and can be estimated even in samples that do not contain disasters. The model points to a novel estimation procedure based on currency options with potentially different strikes. We implement this procedure on a large set of countries over the 1996--2008 period, forming portfolios of hedged and unhedged carry trade excess returns by sorting currencies based on their forward discounts. We find that disaster risk premia account for about 25% of expected carry trade excess returns in advanced countries"--National Bureau of Economic Research web site.