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Information published on social networks and their impact on the cryptocurrency market
ŠŤASTNÝ, Petr
The aim of the diploma thesis is to verify the influence of information published on social networks on the profitability of selected cryptocurrencies. The diploma thesis is divided as follows. First, the theoretical part explains the basic issues, introducing the cryptocurrency industry along with an insight into the cryptocurrencies under study. This is followed by the theoretical basis of the research, in which the event study is described along with the theory of efficient markets. The theoretical part is followed by the methodological part. In it, the aim of the diploma thesis is described in more detail, along with the hypotheses under investigation. Furthermore, the methodological procedure of the research, along with the data analysed. The analytical part itself focuses on examining the impact of social media posts, while maintaining the methodological procedure. Next, the chosen hypotheses are tested. This is summarised within the evaluation of the results, along with an assessment of the sub-objective of the thesis.
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Corporate governance and M&A effectiveness
Akmatalieva, Chinara ; Gregor, Martin (advisor) ; Novák, Jiří (referee)
This master thesis analyzes the transactions of merger and acquisition for three European countries as Germany, Netherlands and Austria with developed economies and how they are affected by corporate governance in the companies. In order to address, it collects 41 deals from 426 chosen transactions from the 1st of January 2010 to 31st of December 2019. Using method of event study with data from stock market it was examined the cumulative abnormal return on the shares of the acquiring company. Based on the results of the study, the optimum number of directors on the board, the board independence ratio and the length of the CEO's tenure have a positive relation to the effectiveness of mergers and acquisitions at the current level of corporate governance. In addition, guided by this research, it is possible to improve the mechanism of corporate governance in order to increase efficiency of mergers and acquisitions in Europe. Furthermore, an empirical model with cumulative abnormal return calculation tend to explain the impact of board structure, the number of independent members and the tenure of chief executive officer on mergers and acquisitions performance. JEL Classification C8, G3, G30, G34, M20 Keywords corporate governance, mergers and acquisitions, event study, agency theory, board of...
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The impact of foreign and domestic M&A on acquirer's stock prices in Central and Eastern Europe
Lukashova, Anna ; Kočenda, Evžen (advisor) ; Novák, Jiří (referee)
The primary objective of this thesis is to investigate the value implications of the mergers and acquisitions deals initiated by the firms from the CEE region. We examine the sample of the 203 M&A announcements made by the bidder firms from the two major economies in the region-Poland and Russia-over the period 2006-2016. We apply the event study methodology to investigate the effect of the M&A announcement on the wealth of the acquirers' shareholders. The results demonstrate that on average investors of the Polish acquirers receive positive short-term wealth effect, while the investors of the Russian firms lose in short-term value. Our empirical findings provide partial support for the positive wealth effect when acquirers target the strategically important asset. Our results hold after controlling for the number of firm and transaction-specific characteristics. JEL Classification G14, G32, G34 Keywords mergers and acquisitions, event study, bidder gains, shareholder wealth effects, Central and Eastern Europe Author's e-mail lukashova.a.v@gmail.com Supervisor's e-mail kocenda@fsv.cuni.cz
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Three Essays on Corporate Financial Misconduct and Market Reactions
de Batz de Trenquelléon, Laure ; Kočenda, Evžen (advisor) ; Havránek, Tomáš (referee) ; Brůna, Karel (referee) ; Karpoff, Jonathan M. (referee)
Chapter 1 Summary of the Dissertation "We are in the golden age of fraud." Jim Chanos, Kynikos Associates, Financial Times 24/07/2020. Beyond the speculations about the consecutive waves of Covid, 2020 will be reminded for one of the most notorious failures of a listed firm, due to a massive accounting fraud: the German payment fintech Wirecard. The firm, with 30 subsidiaries in 26 countries, joined the prestigious DAX index just two years before. The spillovers of the billion-euro fraud range from the arrest of top managers to suspicion of auditors, politicians, and regulatory authorities (BaFin, European Commission, and ESMA), as suggested the Financial Times headline "Why was Frankfurt so blind for so long?"1 Such a failure serves as a reminder of the relevance of financial markets regulation, oversight, and enforcement, in order to protect investors and to encourage compliance with regulations. Research on the relationship between the publication of financial misconducts and financial performance for corporates has continuously grown, as illustrated by the recent in- depth literature reviews undergone by Amiram et al. (2018) and Liu and Yawson (2020). It is fueling regulatory debates on how to enforce more efficiently financial regulations. Some specificities of white-collar crimes must be accounted for...
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Financial Crime and Punishment: A Meta-Analysis
de Batz, L. ; Kočenda, Evžen
We examine how the publication of intentional financial crimes committed by listed firms is interpreted by financial markets, using a systematic and quantitative review of existing empirical studies. Specifically, we conduct a meta-regression analysis and investigate the extent and nature of the impact that the publication of financial misconducts exerts on stock returns. We survey 111 studies, published between 1978 and 2020, with a total of 439 estimates from event studies. Our key finding is that the average abnormal returns calculated from this empirical literature are affected by a negative publication selection bias. Still, after controlling for this bias, our meta-analysis indicates that publications of financial crimes are followed by statistically significant negative abnormal returns, which suggests the existence of an informational effect. Finally, the MRA results demonstrate that crimes committed in common law countries, alleged crimes, and accounting crimes carry particularly weighty information for market participants. The results call for more transparency on side of enforcers along enforcement procedures, to foster timely and proportionate market reactions and support efficient markets.
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Three Essays on Central European Foreign Exchange Markets
Moravcová, Michala ; Horváth, Roman (advisor) ; Komárek, Luboš (referee) ; Baumohl, Eduard (referee) ; Pappas, Vasileios (referee)
This dissertation thesis consists of three essays on new EU foreign exchange markets (FX), i.e. the Czech koruna, Polish zloty and Hungarian forint. In the first two essays, the impact of foreign macroeconomic news announcements and central banks' monetary policy settings on the value and volatility of examined exchange rates is analyzed. In the third chapter, the conditional comovements and volatility spillovers on new EU FX markets is examined. The aim of this thesis is to contribute to the existing empirical literature by providing new evidence of the examined currencies during periods, which have not been examined yet (after the Global financial crisis (GFC), during the EU debt crisis and during currency interventions in the Czech Republic). The first essay (Chapter 2) examines the impact of Eurozone/Germany and US macroeconomic news announcements and monetary policy settings of the ECB and the Fed on the value of new EU member states' currencies. It is a complex analysis of 1-minute intraday dataset performed by event study methodology (ESM). We observe different reactions of exchange rates in pair with the US dollar on the US macroeconomic announcements and Euro-expressed FX rates on Germany macro news during the EU debt crisis and after it. We also provide evidence of leaking news, showing...
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The impact of foreign and domestic M&A on acquirer's stock prices in Central and Eastern Europe
Lukashova, Anna ; Kočenda, Evžen (advisor) ; Novák, Jiří (referee)
The primary objective of this thesis is to investigate the value implications of the mergers and acquisitions deals initiated by the firms from the CEE region. We examine the sample of the 203 M&A announcements made by the bidder firms from the two major economies in the region-Poland and Russia-over the period 2006-2016. We apply the event study methodology to investigate the effect of the M&A announcement on the wealth of the acquirers' shareholders. The results demonstrate that on average investors of the Polish acquirers receive positive short-term wealth effect, while the investors of the Russian firms lose in short-term value. Our empirical findings provide partial support for the positive wealth effect when acquirers target the strategically important asset. Our results hold after controlling for the number of firm and transaction-specific characteristics. JEL Classification G14, G32, G34 Keywords mergers and acquisitions, event study, bidder gains, shareholder wealth effects, Central and Eastern Europe Author's e-mail lukashova.a.v@gmail.com Supervisor's e-mail kocenda@fsv.cuni.cz
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Influence of German Bundestag Elections on the Stock Market Performance in Visegrad Group Countries
Skála, Jakub ; Horváth, Roman (advisor) ; Chytilová, Julie (referee)
This thesis deals with the behaviour of stock markets during the period of election process. We focus on the influence of elections to the German Bundestag on stock market performance of the countries allied in Visegrad Group during the reference period 1994-2013 covering six Bundestag elections. Germany is a major export partner for all members of Visegrad Group - the Czech Republic, Hungary, Poland and Slovakia. We examine whether there are abnormal returns on stock markets in Visegrad Group countries around the date of German Bundestag elections. We thus examine if the fact that performance of German economy is important for performance of economies of countries allied in Visegrad Group means that Bundestag elections influences their stock markets. We also analyze the influence of elections to German Bundestag on domestic stock market during the reference period 1961-2013. To measure the effect of elections we employ event study methodology using the mean-adjusted return model to measure normal returns. Our event window consists of 65 trading days around the election day (-15,50). We use the estimation window of 100 days (-150,-51). We assess our main hypothesis for each country around every Bundestag elections in our reference period separately over three event windows and also over eight event...
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The Impact of Judicial Verdicts Regarding Patent Litigation on Stock Prices
Vlčková, Kateřina ; Novák, Jiří (advisor) ; Kvaček, Jan (referee)
This thesis examines the impact of judicial verdicts on patent holders' stock prices. Our dataset contains 40 companies which were involved in a legal dispute concerning patent infringement or patent invalidity and which were judged by the England and Wales High Court (patent court). This work states three main hypotheses which are examined within the empirical part. To understand the impact of a judgement on the stock price of the patent holder we used an event study which measures the impact of economic events on stock prices. We divided the main hypothesis into two parts. The first part examines whether the stock price increases in case of a trial victory and the second part tests whether the stock price decreases in case of a trial defeat. Our empirical analysis refused an alternative hypothesis and so the first part was confirmed. Nevertheless our results did not confirm the second part of the first hypothesis and the stock price shows the positive abnormal return even in case of a trial defeat. On the basic of these results we conclude that judgements influence the stock price in some specific cases but they are not a dominant factor. However we confirm the next hypothesis that the stock price reacts more sensitively to the judgement's announcement in a trial concerning patent invalidity than...
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Change in market value through acquisitions, empirical investigation on capital markets of Germany, France and Great Britain
Mitkov, Michal ; Brabenec, Tomáš (advisor) ; Hamplová, Barbora (referee)
This paper presents an investigation into the relationship between the announcement of acquisitions, the existence of positive abnormal return for shares of these firms and market efficiency in Germany, France and Great Britain. The sample of transactions ranged from January 2010 to December 2015. This thesis has used the event study methodology where the Cumulative Average Abnormal Returns (CAAR) of the target and bidder firm's stock prices in different event windows have been analysed. Across all the markets, target firm's stock price yields positive CAAR that is significantly different from zero on the day of the announcement. Unlike the target firms, bidder firms do not show statistically significant CAAR for all analysed markets. The second goal was to analyse market efficiency using CAAR data from the event study. It was concluded that the analysed markets behave in a semi-strong form of market efficiency with potential cases of insider trading identified.
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