|
|
Comovement of Stock Markets and Commodities: A Wavelet Analysis
Vavřina, Marek ; Vácha, Lukáš (advisor) ; Princ, Michael (referee)
The thesis applies the wavelet analysis to four developed stock market indices (USA, UK, Germany and Japan), four developing stock market indices (Brazil, China, India, Russia) and four commodities (Gold, Crude oil, Heating oil and Natural gas) and it aims to reveal how they comoved in the period of the Global financial crisis, which began in the USA as the Subprime mortgage crisis. Also the potential presence of contagion caused by the bankruptcy of Lehman Brothers bank is investigated. In addition the Granger causality test is applied to give a different perspective and to extend the analysis. Empirical results revealed that the wavelet correlation of stock markets and commodities differ significantly when talking about the short-term and the long-term horizon. This information can be utilized in the portfolio analysis. The wavelet analysis revealed contagion coming from the USA to the German and Brazil stock market, Crude oil and Heating oil market after the bankruptcy of Lehman Brothers. The Granger causality test indicates that there is a very strong causal relationship between stock markets and commodities and it differs at different scales.
|
|
|
Systemic risk and sovereign crises: modelling interconnections in the financial system
Klinger, Tomáš ; Teplý, Petr (advisor) ; Jakubík, Petr (referee)
This thesis focuses on the link between financial system and sovereign debt crises through sovereign support to banks on one hand and banks' exposures to weak sovereigns on the other. After illustrating the main relationships on the recent financial crisis, we construct an agent-based network model of an artificial financial system allowing us to analyse the effects of state support on systemic stability and the feedback loops of risk transfer back into the financial system. First, the model is tested with various parameter settings in Monte Carlo simulations and second, it is calibrated to the real world data using a unique dataset put together from various sources. Our analyses yield the following key results: Firstly, in the short term, all the support measures improve the systemic stability. Secondly, in the longer run, the effects of state support depend on several parameters but still there are settings in which it significantly mitigates the systemic crisis. Finally, there are differences among the effects of the different types of support measures.
|
|
|
The Main Determinants of European Trade Integration
Spivacenco, Carolina ; Vacek, Pavel (advisor) ; Dingová, Vilma (referee)
The importance of international trade cannot be neglected as it represents an important channel of wealth creation in the actual globalised world. Thus, the present writer aims to identify how the commercial flows have changed after the adoption of Euro and once the financial crisis has burst. Furthermore the main factors that influence trade are researched by using the gravitational econometric model and employing panel data for 14 EU member countries. The results show that the intensity of commercial exchanges are highly influenced by the level of development (GDP) of the country and the amount of FDI that are attracted, while the use of a common currency appears to be not too significant. At the same time, indicators are more sensible during the crisis period than the stable one, hence even small changes in independent variables can lead to higher decrease in trade. Key words: European trade, liberalization, competitiveness, financial crisis, contagion, Euro, gravitational model.
|
|
|
Impact of Sovereign Ratings Changes on European Sovereign Yield Spreads
Vyskočilová, Veronika ; Horváth, Roman (advisor) ; Teplý, Petr (referee)
The spreading sovereign debt crisis in the Euro zone has renewed the debate about impact of credit rating agencies on financial markets. This thesis aims to explore the role played by the leading credit rating agencies by analysing the interaction between changes in sovereign ratings announced and the yield spreads of sovereign bonds, especially the short term impact and the potential contagion effect of rating changes on the highly integrated Euro zone financial market. The conducted event study and panel regression indicate that there is a significant impact of rating downgrades and negative rating outlooks on sovereign bond markets. Moreover, we have found significant contagion effect spreading from downgraded countries to non-event Euro zone members, namely not only to sovereign bond markets, but also to stock markets. JEL Classification: C23, E44, G12, G14 Keywords: credit ratings; sovereign yield spreads; rating agencies; contagion Author's email: veronika.vyskocilova@email.cz Supervisor's email: roman.horvath@gmail.com
|
|
|
Cross-Border Contagion: An Empirical Analysis of the Current Financial Crisis in Central and Eastern Europe
Žáková, Kristýna ; Geršl, Adam (advisor) ; Mertlík, Pavel (referee)
The objective of this thesis is to examine cross-border contagion effects during the 2007-09 crisis in Central and Eastern Europe (CEE) and from all the possible propagation channels, it chooses to focus on cross-border bank loans. It tries to discover which global and local factors had significant influence on the changes in bank loans from banks in source (lending) countries to banks, as well as households, corporations and government in host (borrowing) countries. The main research method is a panel data regression model. The empirical results suggest that both local and global factors had influence on the changes in cross-border loans, i.e. helped to spread the 2007-09 crisis to CEE. The significant local factors were macroeconomic and financial characteristics of both source and host countries, such as their GDP growth differential, interest rate differential, FDI, or profitability and health of the banking sector. The significant global factors were the expected market volatility and investors' risk appetite/aversion which was an indicator of "pure" contagion. The main contribution of this thesis lies in its focus on CEE and the analysis of investors' behavior based on their changing risk appetite.
|
|
|
Měření finanční nákazy pomocí CAViaR metody: Aplikace na Evropu
Tomanová, Petra ; Zouhar, Jan (advisor) ; Formánek, Tomáš (referee)
The aim of this thesis is to measure changes in dependencies among returns on equity indices for European countries in tranquil periods against crisis periods and to investigate their asymmetries in the lower and upper tail of their distributions. The approach is based on a conditional probability that a random variable is lower than a given quantile while other random variables are also lower than their corresponding quantiles. Time-varying conditional quantiles are modeled by the Conditional Autoregressive Value at Risk via Regression Quantiles (CAViaR) method. In addition to the univariate conditional autoregressive models, the vector autoregressive extension is considered. In the second step, the conditional probability is estimated through the OLS regression. Moreover, the model which allows the distribution of returns in one country to lead or to lag the distribution of returns in another country, is defined and applied on European equity returns. Finally, the model measuring dependencies among more than two return series is derived and the relating dimensionality problems are discussed. The results document a significant increase in European equity return comovements in bear markets during the crisis in 1990s and 2000s. The explicit controlling for the high volatility days does not appear to have an impact on the main findings. For the comparison purposes, the results for Latin American countries are reported as well.
|
|
|
Contagion Risk in the Czech Financial System: A Network Analysis and Simulation Approach
Hausenblas, Václav ; Kubicová, Ivana ; Lešanovská, Jitka
This paper examines the potential for contagion within the Czech banking system via the channel of interbank exposures of domestic banks enriched by a liquidity channel and an asset price channel over the period March 2007 to June 2012. A computational model is used to assess the resilience of the Czech banking system to interbank contagion, taking into account the size and structure of interbank exposures as well as balance sheet and regulatory characteristics of individual banks in the network. The simulation results suggest that the potential for contagion due to credit losses on interbank exposures was rather limited. Even after the introduction of a liquidity condition into the simulations, the average contagion was below 3.8% of the remaining banking sector assets, with the exception of the period from December 2007 to September 2008. Activation of the asset price channel further increases the losses due to interbank contagion, showing that liquidity of government bonds would be essential for the stability of Czech banks in stress situations. Finally, the simulation results for both idiosyncratic and multiple bank failure shocks suggest that the potential for contagion in the Czech banking system has decreased since the onset of the global financial crisis.
Fulltext:  PDF
|
|
|
Measuring Sovereign Bond Spillover in Europe and the Impact of Rating News
Claeys, Peter ; Vašíček, Bořek
Although there is by now strong evidence that sovereign risk premia are driven by a common factor, little is known about the detailed linkages between sovereign bond markets. We employ the VAR method by Diebold and Yilmaz (2009) to analyse the strength and direction of bilateral linkages between EU sovereign bond markets using daily data on sovereign bond yield spreads and a common factor. The forecast-error variance decomposition of this FAVAR indicates a lot of heterogeneity in the bilateral spillover sent and received between bond markets. Spillover is more important than domestic factors for all eurozone countries. The CE countries mostly affect each other. Only Denmark, Sweden and the UK are rather insulated from spillover. The spillover has increased substantially since 2007, despite starting from a high level. We use this framework to measure the impact of sovereign rating news and analyse the dynamic linkages between spreads and the ratings of the main credit rating agencies. We find a two-sided relation between rating news and sovereign risk premia. The spillover of rating news is very heterogeneous, and it is substantially stronger for downgrades at lower grades. The impact is often weaker domestically than on bond spreads of other sovereigns. JEL
Fulltext: PDF
|
|
|
Comovement of Central European stock markets using wavelet coherence: Evidence from high-frequency data
Baruník, Jozef ; Vácha, Lukáš ; Krištoufek, Ladislav
In this paper, we contribute to the literature on international stock market comovement and contagion. The novelty of our approach lies in usage of wavelet tools to high-frequency financial market data, which allows us to understand the relationship between stock market returns in completely different way. Major part of economic time series analysis is done in time or frequency domain separately. Wavelet analysis can combine these two funda- mental approaches, so we can work in time-frequency domain. Using wavelet coherence, we have found very interesting dynamics of cross-correlations be- tween Central European and Western European stock markets. We analyze the high-frequency (5 minute) and low-frequency (daily) data of Czech (PX), Hungarian (BUX) and Polish (WIG) stock indices with a benchmark of German stock index (DAX) on the period of 2008-2009. Our findings provide possibility of a new approach to financial risk modeling.
|
|
|
Přeshraniční úvěrová nákaza v nadnárodních bankách
Derviz, Alexis ; Podpiera, J.
Lending contagion in multinational banks is studied theoretically and empirically. In the proposed model, contagion arises due to shareholder-manager delegation and precautionary motives. Empirically, more than one half of the multinational banks in our representative sample show signs of lending contagion.
|
guest ::
