Accurate modeling of extreme price changes is vital to financial risk management. We examine the small sample properties of adaptive tail index estimators under the class of student-t marginal distribution functions including GARCH and propose a model-based bias-corrected estimation approach....

This paper builds on Kočenda (2001) and extends it in two ways. First, two new intervals of the proximity parameter ε (over which the correlation integral is calculated) are specified. For these ε- ranges new critical values for various lengths of the data sets are introduced and through...

The article analyzes production and marketing lags in agri-food supply chains that force competitive producers and processors to commit to output targets before prices and exchange rates are realized. We show that export markets act as put options for exporters and an increase in the volatility...

This paper examines the validity of the efficient market hypothesis (EMH) for the foreign exchange market of Papua New Guinea (PNG) using data on spot exchange rates for four major foreign currencies during the recent float. The unit root test results indicate that all the four exchange rates...

This paper analyses the implications of information dissemination on currency crises in models with self-fulfilling expectations. Following Morris/Shin (1999, 2000), we introduce noisy private and public information, so that under certain conditions for the noise parameters a unique equilibrium...

Objectives: The objectives of this empirical study are: firstly, to modify and extend the 'signals approach', developed by Kaminsky/Lizondo/Reinhart (1997) as an early warning system for currency crises, secondly, to apply it to transition economies in Central and Eastern Europe, and, thirdly,...

In the Mexican Peso crisis 1994/95, the lack of readily available information, particularly regarding monetary aggregates, has often been commented on. This paper analyzes empirically whether information disparity with respect to economic fundamentals contributed to the crisis. Using historical...

This paper examines currency derivatives that have emerged in international financial markets over the past two years, emphasizing the departures of spot exchange rate movements from the macroeconomic fundamentals among the “triad” currencies: the U.S. Dollar (USD), the German Mark (DM), and...

A set of error correction models are proposed for the nominal exchange rate between the Mexican peso and the United States dollar. The basic theoretical frameworks utilize balance of payment and monetary model constructs. Empirical estimation results are fairly weak for both specifications...

We apply Purchasing Power Parity (PPP) theory to the analysis of long- run equilibrium in the foreign exchange market. We study the case of Portugal vis-à-vis Germany and Spain, and the case of Spain vis-à-vis Germany, in the period 1960-1990. The empirical analysis was based on unit-root...