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Interconnections within Food, Biofuel and Fossil Fuel Markets: Cointegration Analysis
Chrz, Štěpán ; Hrubý, Zdeněk (advisor) ; Hildebrandt, Barbora (referee)
This work examines a topic of interconnections within food, biofuel and fossil fuel markets. The first part provides a general description of biofuel types, related policy measures and a development of relevant legal framework in selected regions. Second part describes an analysis of long and short-term causal relationships between commodities. Furthermore, an impact of Energy Policy Act of 2005 on these relationships is examined. The analysis incorporates Johansen cointegration, error correction model, vector autoregression and Granger causality. A number of equilibrium relationships are found across the examined markets suggesting an interconnection of the studied markets. The results of the impact of EPA are inconclusive due to limitations of employed models.
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Behaviour of Stocks on the Prague Stock Exchange During the Financial Crisis: Evidence from Empirical Research
Koza, Oldřich ; Teplý, Petr (advisor) ; Krištoufek, Ladislav (referee)
This work studies the behaviour of the four most traded stocks on the Prague Stock Exchange from January 2007 to July 2010. Its main goal is to describe how the financial crisis influenced the Prague Stock Exchange. Employing standard statistical methods, ARMA, GARCH, and VAR models I examine on daily data the following phenomena: volatility, price jumps, the day of the week effect, validity of the efficient market hypothesis, and information flow between the stocks. The results imply that the financial crisis had stronger impact on the banking sector stocks than on other stocks. The crisis was mainly characterized by rapid growth in volatility and correlation between the stocks. It also influenced the information flow and the day of the week effect. However, the crisis did not trigger growth in the number of extreme price movements, and it did not cause the market to be less information efficient.
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Speculation on oil markets and its impact on commodity's price
Melcher, Ota ; Taušer, Josef (advisor) ; Baláž, Peter (referee) ; Müller, Štěpán (referee)
This study aims to analyse the precrisis period on the oil markets with a primary objective of assessing the role of speculation in the commodity's price development and its volatility. First it depicts the rapidly increasing speculative activity on the futures market together with the parallel oil price surge. The speculation is initially proxied by non-commercial traders' positions and subsequently quantified by Working's T-index. The paper then uses speculative traders' positions and both spot and futures prices to test for Granger causality within the framework of VAR models. For the sake of consistency it also evaluates causal links between speculation and inventories level. Further the study investigates the speculation impact on volatility of oil prices by employing various approaches in volatility quantification including GARCH models. Contrary to expectations we find that the speculatio's impact on both prices and their volatility is rather insignificant. In the last chapter we therefore seek for an explanation of the oil price developments by examining the market fundamentals. The interaction of supply and demand finally gives substantial evidence for understanding the price developments in the precrisis period.
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Zadluženost veřejného sektoru ve vybraných zemích Evropské unie
Osičková, Eliška
This thesis analyzes the issue of fiscal imbalance in selected member states of European Union, namely, the first 12 states which officially introduced the Euro banknotes and coins in 2002. Empirical part of thesis analyzes the development of indebtedness in selected countries. The thesis also deals with the existence of causal relationship between public debt and economic growth in these countries via regression analysis of data panel for period 1995-2014 and 2008-2014. Sub-analysis of the thesis aims also at research of determinants of public debt in these countries.
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Vliv informační kaskády na sektorové indexy
Večeřa, Rudolf
Diploma thesis refers about effect of informational cascade, which is causing herding behaviour, in sector indices. Thesis distinguishes between market and sector informational cascade. Each of them is represented as an indicator made from dataset provided by Google trends service. Effect is demonstrated on extended version of CAPM theoretical concept to multi factorial model including the indicators, which is based on APT theoretical concept. For the purpose of robust analyses is then realized Granger causality on regression results.
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Econometric analysis of the economy in game World of Warcraft
Buchníčková, Michaela ; Kuchina, Elena (advisor) ; Formánek, Tomáš (referee)
This thesis analyses the impact of real exchange rate and the official exchange ratio of fiat currencies and in-game golds on the price level in the game World of Warcraft. The work also includes a brief summary of the mechanisms of the in-game economy. The analysis is based on cointegration test and Granger causality test. Individual estimations are model based on the VAR and VEC models theory. The conclusions of this study are made for specific randomly selected pairs of servers with different populations. These results are not easily generalized for the entire regions, but they offer insight into the possible factors affecting the price level in each virtual economy. The results show that the price level on the American server Aegwynn affects the exchange rates of fiat and game currencies as well as that game currency exchange rate in the European region is sensitive to changes in exchange rates of the euro and the yuan. All calculations in this work were implemented in Eviews 8 software.
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Hedge Funds and Their Impact on Financial Markets
Jeřábek, Tomáš ; Musílek, Petr (advisor) ; Daňhel, Jaroslav (referee) ; Čihák, Petr (referee)
The aim of this PhD thesis is to analyze the history and current situation of hedge funds and assess their potential to destabilize financial markets. The findings of the analysis are used to validate the assumptions underlying the major regulatory changes of hedge funds in the key global economic centres after the financial crisis in 2008 and 2009. Since their inception early last century hedge funds have gone through a period of great expansion in the sixties, followed by a decline due to large losses sustained in the early seventies. The nineties meant a real breakthrough for hedge funds as a result of which they became prominent players in the alternative investment space. As of today, there is over ten thousand hedge funds that globally manage close to 3 trillion US dollars. Compared to mutual funds and other financial institutions the volume of assets under management is still relatively small, the rate of growth over the past fifteen years has however been very significant. What is emphasized with respect to the impact of hedge funds on financial markets is the contribution to increasing the liquidity and efficiency and their role on the financial derivatives market where hedge funds are actively involved in the transfer of risk. They are at the same time subject of criticism for their purported destabilizing effect on financial markets and contribution to fluctuations in the prices of investment instruments. Although the share of hedge funds in triggering major financial crises has not been conclusively established, these investment entities were one of the targets of the wide-ranging regulatory changes following the financial crisis of 2008 and 2009. The dissertation first discusses the history and current situation of hedge funds and defines the term hedge fund. The following section describes the basic characteristics and principles of their functioning and reviews the regulation in the major domiciles. The final chapter is focused on the empirical analysis of the impact of hedge funds on financial markets. The inputs for this analysis include a global hedge fund index and representative market indices and data from the CFTC on positions in the 10 year US government treasury note futures. In the first step the descriptive statistics for the transformed time series are presented. The second part of the analysis focuses on lagged correlations between returns and volatility of the global hedge fund index and representative market indices. Granger causality tests are applied in the following section to determine the relationships between the returns and volatility of hedge fund and representative market indices. In the final step of the analysis Granger causality tests are used to analyze the link between the changes in positions in the 10-year US treasury note futures held by hedge funds and the change in settlement prices of these futures with the aim to assess whether hedge funds have the capacity to move the market. In conclusion, the results of this analysis are discussed in light of the recent regulatory changes and the potential for the future growth of hedge funds is assessed.
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Does Greater Capital Hamper the Cost Efficiency of Banks?
Lešanovská, Jitka ; Weill, Laurent
The aim of our research is to analyze the relation between capital and bank efficiency by considering both directions of the Granger causality for the Czech banking industry. We use an exhaustive dataset of Czech banks from 2002 to 2013. We measure the cost efficiency of banks using stochastic frontier analysis. We perform Granger-causality tests to check the sign and significance of the causal relation between capital and efficiency. We embed Granger-causality estimations in the GMM dynamic panel estimator. We find no relation between capital and efficiency, as neither the effect of capital on efficiency, nor the effect of efficiency on capital is significant. The financial crisis does not influence the relation between capital and efficiency. Our findings suggest that tighter capital requirements like those under Basel III do not affect financial stability through the efficiency channel. Policies favoring capital levels and efficiency of the banking industry can therefore be designed separately.
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Testing the neoclassical migration model: An empirical analysis based on panel data for the Czech republic
Kureková, Lucie ; Čadil, Jan (advisor) ; Mazouch, Petr (referee)
In this paper is tested validity of the neoclassical migration model. For this purpose, were used Fixed effects model and VAR model. Data contain period of years 2001 to 2010 from 14 regions of the Czech republic and dataset contains 140 observations. Empirical results of Fixed effects model show that socioeconomic determinants had signifficant influence on regional rate of migration in the Czech republic. The direction and strength of influence of the most explanatory variables corresponded to the neoclassical theory. Estimations of VAR model indicate that regional migration did not decrease disparities within regions. These results questioned validity of neoclassical migration model.
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Influence of internet on newspaper circulation in Czech republic.
Děd, Michal ; Zouhar, Jan (advisor) ; Kříčková, Darina (referee)
The aim of this study was to investigate the influence of free information on the Internet on decreasing sales of printed newspapers. I tested the main hypothesis that the increase in Internet daily visits in the previous period has an impact on the sales of the printed journal in the following period . Another researched phenomenon was the influence of previous rising visitors of web news on subsequent revenue from advertising in print version. These effects I researched on -month and quarterly data in panel of eight czech dailies for the period from 2006 to 2012. The result is that we could not confirm the effect of Granger causality between web pages and his dailies itself nor on a monthly or quarterly basis. When it comes to examining the impact of Internet visits to newspapers revenue from advertising, on the contrary, here we confirmed Granger causality on quarterly data from past revenues from advertising to the current Internet visits . This means that the Internet visits will decrease when there is increased advertising income of newspapers in the previous quarter, which is , however, difficult to interpret in economic terms . The main benefit of this work is that the effect of preceding of webiste visits and newspaper circulations was not confirmed.
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