The econometric literature offers various modeling approaches for analyzing micro data in combination with time series of aggregate data. This paper discusses the estimation of a VAR model that allows unobserved heterogeneity across observation unit, as well as unobserved time-specific...

Celem opracowania jest analiza zasadnosci wykorzystania metody Valua at Risk w szacowaniu ryzyka zwiazanego z inwestycja w spolki branzy metalurgicznej. W artykule przedstawiono sposob konstruowania modelu, rozne metody jego estymacji oraz ich wady i zalety. W czesci badawczej artykulu...

The paper presents empirical results on the discounting of delayed payoffs which show that: (1) the best approximation of the discounting process is a hyperbolic function, (2) (both animals and humans) can reverse their preferences in time. The article presents theoretical conditions on the...

We examine the estimation problem for shape-restricted functions that are continuous, non-negative, monotone non-decreasing, and strictly concave. A sieve estimator based on bivariate Bernstein polynomials is proposed. This estimator is drawn from a sieve, a set of shape-restricted Bernstein...

We discuss the origins and the possible reasons for the sudden death of the VOLAX contract.

We analyze the implied volatility surface structure of ODAX options as traded on DTB (currently Eurex). We apply PCA to cross sections of the implied volatility surface taken along the same moneyness (m) or the same time to maturity (T). For data from the period October 3rd 1997 – November...

Increasing globalization contributes to the growth of the interdependencies between capital markets. This phenomenon is becoming a significant exogenous factors influencing the effectiveness of national economic policies and it impacts on the risk management processes at the microeconomic level....

English Abstract: The development of the Polish corporate bonds market resulted from changes on the supply side. When the Lehman Brothers went bankrupt, Polish entrepreneurs realized that financing their companies' operations only with the use of credit, even if contracted from different...

Polish Abstract: Znaczny wzrost kwoty, ilości i roli kredytów mieszkaniowych w polskim systemie bankowym ma bez wątpienia wpływ na gospodarkę. Z jednej strony można twierdzić, że finansowanie rynku mieszkaniowego pozytywnie wpływa na wzrost gospodarczy, z drugiej jednak strony rosnąca...