Estimation of volatility of financial time series plays a crucial role in pricing derivatives. Volatility is often estimated from historical data; however, it is well known that volatility varies in time. We propose a method to choose a suitable length of historical data to estimate contemporary...

The article deals with a typical phenomenon of financial time series - volatility. These time series usually embody intermittent periods of relative "calm" and quite high variability. A volatility modelling of time series is made with the help of special econometric volatility models which...

Efficient Market Hypothesis has dominated the field of research on capital market theory. It postulates that asset prices are rationally connected to economic realities and always incorporate all the information available to the market. A huge quantity of theoretical works around the world have...

The article is concerned with voting indicators in the European Union. The first chapter constructs a model of voting power and defines four indicators: A. Simple relative power, B. Shapley-Shubik index, C. Banzhaf index, D. Coleman index. The second chapter defines data: the voting structure...

This study explores bank´s transformation in the Czech Republic from the point of view of their profit. It considers factors that influenced domestic banks and income structure of peer groups. Under conditions of equal competition, the peer groups showed different characteristics in terms of...

The authors use a variance ratio test to test the weak form of market efficiency as regards capital markets in the Czech Republic, Slovakia, Hungary, Poland, and in the United States. Market efficiency was tested using weekly and monthly values of relevant market indices in a period from 1993...

Volatility of the financial time series belongs to the crucial estimated parameters in finance (e.g. in risk management, derivative pricing). It is well known, that volatility varies in time, so that new approaches of volatility modeling have appeared. In this paper two models of the conditional...

The interconnections within food, biofuel and fossil fuel markets are first described in the context of biofuels technologies and economic policy framework. Consequently, the econometric analysis consisting of Johansen cointegration, error correction model, vector autoregression and Granger...

Modifying IS-MP-IA model by using EU economic characteristics allows for better interpretation of the results. Specifically, from the point of view of the IS and MP curves we obtain useful information about the influence of EU economy on the Czech economy (i.e. on its GDP). We may conclude that...

In the study submitted, selected methods of financial time-series analysis are applied to daily returns of the most liquid stocks at Czech capital market. In most cases, symmetric GARCH(1,1) models are quite satisfactory. Further, ARFIMA models enabling to catch "long memory" of underlying...