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Seasonal Effects on Stock Markets in Europe
Rosol, Jaroslav ; Kukačka, Jiří (advisor) ; Čornanič, Aleš (referee)
This thesis researches the problem of stock market efficiency and market anomalies. Specifically, we look on European stock markets and possible presence of four seasonal effects - January, Halloween, Turn-of-the-month and Monday effects. These seasonal anomalies imply that returns for specific period are unusually higher or lower than returns for the rest of the time, which presents a challenge for the Efficient Market Hypothesis. The empirical side of this problem is the possible opportunity for excessive profit from trading on stock markets that could be based on the seasonal anomalies. Firstly, we summarize previous research in the field and attempts of explanation of individual effects. Further, we present the tools needed for our analysis - Ordinary Least Squares regression with dummy variables and few extensions. Data used for the analysis consists of 32 European stock indices. The actual analysis is performed as a comparison of returns on stock for certain specified periods. The evidence on January and Monday effects is found not strong enough to confirm the presence of such anomalies. On the other side, there is enough significant evidence on the presence of Halloween and Turn-of-the-month effects. Moreover, we are unable to explain the Halloween effect as manifestation of January effect. Powered...
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Heterogeneous Agent Model of Housing Market in Ireland
Teichman, Jiří ; Kukačka, Jiří (advisor) ; Jašová, Martina (referee)
This thesis studies the housing market in Ireland within the Heterogeneous Agent Model (HAM) framework. The choice of Ireland for empirical research is motivated by the impact of the recent property bubble on whole Irish economy. At first, the thesis shows general features of HAMs and provides overview of relevant literature. Subsequent survey of behavioral aspects influencing market agents suggests presence of heterogeneity on housing markets. The behavioral evidence for heterogeneity shows why HAMs are good choice for studying those markets. For estimation of the model, we use the Irish data covering the period between 1978 and 2014. Important feature of the HAM used in this thesis is the switching between fundamental and momentum strategies. Because the fundamental value has crucial role in the model, we considered its four approx- imations in our estimations. The estimation results imply that the housing market agents in Ireland are heterogeneous. Interestingly, the nature of strate- gies used by the agents in the estimated model are dependent on the method of fundamental value approximation. Additionally, the agents switch to the strategy which performed better in previous periods. The simulations with estimated models are able to replicate the market fluctuations. Moreover, the simulations show...
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Predictability of security returns using Twitter sentiment
Fremunt, Marek ; Baruník, Jozef (advisor) ; Kukačka, Jiří (referee)
This work concentrates on exploring the influence of social networks to financial markets. We have introduced a novel approach to Twitter sentiment analysis, in which we collect continuous stream of data and analyze it. Our original data set contains over 200 million English written Tweets from the period between July 1, 2014 and October 9, 2014. Twitter sentiment is used as a good representative of investors' mood. On hourly data we investigate how investors are influenced by basic emotions, moods and sentiment in their decision making processes as well as the influence of keywords related to specific securities and FOREX symbols. Particularly, we examine the relationships between Twitter-based variables and returns as well as volatility of several financial instruments on a wide range of data including commodities, currencies and S&P 500 Cash Index. We show that Twitter sentiment influences volatility of securities' returns, tested and shown on both conditional and realized volatility models. We also describe the effect of Twitter sentiment on securities' returns. Moreover, we reveal the influence of basic emotions on investors' decision making processes. Our results suggest that investors are influenced by emotions and moods, especially at longer investment horizons. The impact of emotions at shorter...
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Behavioural Breaks in the Heterogeneous Agent Model
Kukačka, Jiří ; Baruník, Jozef (advisor) ; Víšek, Jan Ámos (referee)
This thesis merges the fields of Heterogeneous Agent Models (HAMs) and Be- havioural Finance in order to bridge the main deficiencies of both approaches and to examine whether they can complement one another. Our approach suggests an alternative tool for examining HAM price dynamics and brings an original way of dealing with problematic empirical validation. First, we present the original model and discuss various extensions and attempts at empirical estimation. Next, we develop a unique benchmark dataset, covering five par- ticularly turbulent U.S. stock market periods, and reveal an interesting pattern in this data. The main body applies a numerical analysis of the HAM extended with the selected Behavioural Finance findings: herding, overconfidence, and market sentiment. Using Wolfram Mathematica we perform Monte Carlo simu- lations of a developed algorithm. We show that the selected findings can be well modelled via the HAM and that they extend the original HAM considera- bly. Various HAM modifications lead to significantly different results and HAM is also able to partially replicate price behaviour during turbulent stock market periods. Bibliographic Record Kukačka, J. (2012): Behavioural Breaks in the Heterogeneous Agent Model. Rigorous thesis, Charles University in Prague, Faculty of Social...
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The Analysis of the Relative Efficiency of the Czech and Polish Financial Market.
Džmuráňová, Hana ; Rippel, Milan (advisor) ; Todica, Doina (referee)
of bachelor thesis Author: Hana Džmuráňová The topic of this bachelor thesis is the Theory of efficient markets. The thesis is split into two related parts. The first part aims to introduce the Theory of efficient markets and behavioral finance. It focuses on several anomalies and limitations in the Theory of efficient markets that have been found as a result of behavioral finance research. The second part of the thesis is an empirical text dedicated to the relative weak form efficiency analysis of the two Central and Eastern Europe Markets - the Prague and the Warsaw Stock Exchange. Relative efficiency is tested by the random walk properties of market index returns and by the OLS method for autoregressive process for market index returns. It has been found that the Warsaw Stock Exchange is relatively more efficient in the weak form efficiency than the Prague Stock Exchange.
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Behavioural Breaks in the Heterogeneous Agent Model
Kukačka, Jiří ; Baruník, Jozef (advisor) ; Víšek, Jan Ámos (referee)
This thesis merges the fields of Heterogeneous Agent Models (HAMs) and Be- havioural Finance in order to bridge the main deficiencies of both approaches and to examine whether they can complement one another. Our approach suggests an alternative tool for examining HAM price dynamics and brings an original way of dealing with problematic empirical validation. First, we present the original model and discuss various extensions and attempts at empirical estimation. Next, we develop a unique benchmark dataset, covering five par- ticularly turbulent U.S. stock market periods, and reveal an interesting pattern in this data. The main body applies a numerical analysis of the HAM extended with the selected Behavioural Finance findings: herding, overconfidence, and market sentiment. Using Wolfram Mathematica we perform Monte Carlo sim- ulations of a developed algorithm. We show that the selected findings can be well modelled via the HAM and that they extend the original HAM consider- ably. Various HAM modifications lead to significantly different results and HAM is also able to partially replicate price behaviour during turbulent stock market periods. Bibliographic Record Kukačka, J. (2011): Behavioural Breaks in the Heterogeneous Agent Model. Master thesis, Charles University in Prague, Faculty of Social Sciences,...
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Consumer Decision-Making in Conditions of Risk
Cetlová, Tereza ; Svobodová, Kateřina (referee) ; Škapa, Stanislav (advisor)
The aim of the thesis is to afford a complex perspective of a parallel development of psychology and economics to the readers. It is suggested, how psychological experiments could be used for the overall enrichment of the classical theory of economics. In the thesis, readers are introduced to the development of economic theories over time, and also to what role a human takes as a personality. Including the thesis is the part engaging in consumer decision process.
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Anomalies of financial markets
Máčayová, Miroslava ; Stádník, Bohumil (advisor) ; Vacek, Vladislav (referee)
Theory of efficient markets generally describes financial market as a place with perfect rationality and awareness. According to this theory, the price of each instrument fully reflects all available information, therefore denies the existence of poorly rated stocks. Against this doctrine stands the theory of behavioral finance, which describes, that individuals on financial markets do not always act in rational way, and their behavior is affected with emotions. This psychological phenomenon has the consequence that on the financial market are visible certain anomalies. There are a lot of explanations of these abnormalities. One of the assumptions is that the prices of instruments tend to rise more slowly than fall. This different is in my work explained by the theory of black swan - the existence of unexpected, but the price-setting information. Another psychological theory causing the abnormalities is called the round number effect, which describes that investors consciously or subconsciously tend to perceive the rounded amounts differently than others. Empirical results of my thesis largely demonstrated that the two psychological effects mentioned to some extend contribute to the existence of deviations from normal, and confirm the occurrence of irrationality on financial market.
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Financial Market Anomalies
BUREŠ, Vladislav
The first part of thesis describes the Efficient Market Theory, its characteristics and forms. Another theoretical approach are Behavioral Finances that can also explain the stock market price making. The main topic is Financial Market Anomalies that defy the Efficient Market Theory. Anomalies state that an investor is able to achieve above average profits in the long term regularly. The thesis is focused on two anomalies selected for further testing on the data of companies traded on German exchange Xetra. Data was obtained from Yahoo Finance and processed for statistical tests. Anomalies occurrence was scarce, therefore it cannot be said that an investor is able to achieve above average profits in the long term regularly.
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