The thesis presents three studies that focus on the wealth effects of hybrid securities namely: convertible bonds and warrant-bonds. The wealth effects of these hybrid securities are investigated through both meta-analysis and event-studies. Chapter 2 incorporates a review of the literature on wealth effects associated with the announcement of convertible bonds and warrant-bond loans. The findings of 35 event studies, which include 84 sub-samples and 6,310 announcements, are analysed using meta-analysis. A mean cumulative abnormal return of 1.14% for convertible bonds compared with 0.02% for warrant-bonds are observed, the significant difference confirming a relative advantage for warrant-bonds. Abnormal returns for hybrid securities issued in the United States are significantly more negative than for those issued in other countries. In addition, issuing hybrid securities to refund debt does not seem to be favoured by investors. Finally, several factors identified as important by theory or in prior research are not significant within the cross-study models, suggesting that more evidence is needed to confirm whether they are robust. Chapter 3 presents a study that examines the market reaction to hybrid security announcements in an emerging country, specifically Malaysia, from January 1996 to December 2009. The results indicate that announcements of the intention to issue convertible bonds in Malaysia are associated with significantly negative abnormal returns of 1.10% (significant at the 10% level) on the event window of (-1, 1). On the other hand, announcements of the intention to issue warrant-bonds document significantly positive abnormal returns of 2.25% (significant at the 10% level) on the same event window. The ‘univariate’ test confirms that the wealth effects associated with the announcement of the intention to issue warrant-bonds is larger (i.e., more positive) than convertible bonds in line with few studies in different markets: Japan (Kang, Kim, Park, and Stulz, 1995), the Netherlands (De Roon and Veld, 1998), and German (Gebhardt, 2001). Non-significant abnormal returns of 0.81% and 0.23% on the event window ( 1, 1) are reported for announcements of hybrid securities by means of private placements and rights offerings, respectively, contradict with the ‘certification hypothesis’ of Hertzel and Smith (1993), and ‘signalling hypothesis’ of Heinkel and Schwartz (1986). This chapter also finds that there is no support for ‘information-signalling’ hypothesis (Ross, 1977), as non-significant abnormal returns are observed in the event window ( 1, 1) for announcements of hybrid securities for all purposes of offering (i.e., debt restructuring, mergers and acquisitions, capital expenditure, and working capital). These findings also highlight that listed firms in Malaysia with high risk uncertainty contribute to more negative abnormal returns in comparison to lower risk uncertainty firms, which contradicts with the ‘risk uncertainty hypothesis’. The final study presented in this thesis, Chapter 4, considers the wealth effects of hybrid security announcements in a developed country, the United Kingdom. This third study investigates the wealth effects of announcements of the intention to issue convertible bonds in the UK market over a period from January 1990 until July 2010. The study period also allows for an investigation on the market reaction to announcements of convertible bonds during the financial crisis that started in August 2007. Using the standard event study methodology, a negative abnormal return of 1.75% (significant at the 5% level) on the two-day event window is reported, confirming the findings of previous UK studies (Abyhankar and Dunning, 1999, and Wolf et al., 1999) which are also in line with studies performed using data from other countries such as US, Canada, Australia, and others. There are no significant differences between the results of the sub-samples before and during the financial crisis, suggesting that the economic conditions do not influence the market response. The results of the event study and the multivariate analysis in this chapter are consistent with the ‘market timing hypothesis’ implying that managers in the UK announce their intention to issue convertible bonds after a period of good stock price performance.

This paper uses survey data by the Hong Kong Stock Exchange (HKEx) from 1991-2013 to test the role that institutional ownership has on the relative informational efficiency of stock prices in the Hang Seng Index, using the R2 of stock prices as a measurement of efficiency. This paper finds that on the aggregate level, the presence of institutional ownership is positively associated with R2, reflecting a negative effect on the level of information incorporated into stock prices. However, in isolating foreign institutions, the relationship with R2 reverses, and I find a positive correlation with the informational efficiency of stock prices. Moreover, this paper finds that a period characterized by high growth in institutional shareholding does not necessarily correspond to a greater level of improvement in the informational environment of stock markets. The results however, lack significance, perhaps due to the shortcomings of the survey data which is limited to 21 annual observations when incorporating a t-1 year lag. With more observations we would expect a substantial increase in the significance of the coefficient on our explanatory variables.

Este trabalho objetiva explorar, teórica e empiricamente, a relevância dos dividendos com o valor patrimonial na valorização do preço das ações listadas na BM&FBOVESPA. Para tal, levantou-se a seguinte questão-problema: Que modelo têm um maior poder de explicação dos números contábeis, com base nas empresas listadas na BM&FBOVESPA: valor patrimonial e dividendo ou valor patrimonial e resultados reportados? Como referencial teórico foi utilizado os modelos desenvolvidos primeiramente por Ohlson (1995; 2003; 2005) e como forma alternativa os modelos desenvolvidos por Brief e Zarowin (1999) e de Pourheydari et al (2008) e como base de dados as empresas não financeiras com ações negociadas na BM&FBOVESPA do período de 1997 a 2007. A metodologia aplicada foi de análise de regressões simples e multivariadas, através da proposta de Brief e Zarowin (1999) e de Pourheydari et al (2008), análise da tendência do R2 e dos valores incrementais das variáveis usadas no cálculo. Concluiu-se que dividendos têm importante papel nos modelos de valorização de ações, com relevância informacional (R2) maior, mas, em alguns anos da amostra essa relevância foi menor. Tal fato, no Brasil, pode ser aparentemente devido à (i) contabilidade ser voltada para o atendimento ao fisco e o mercado de crédito; e (ii) à concentração acionária do mercado brasileiro; e ainda a predominância de um mercado acionário voltado ao curto prazo em contraponto se comparado a mercados mais maduros e com uma cultura de investimento voltado a longo prazo, como os Estados Unidos. / This work aims at to explore, theoretical and empirically, the relevance of the dividends and the patrimonial value in the valuation of stocks price listed in the Brazilian Stock Market called BM&FBOVESPA. For help this task raise up the following subjectproblem: What model has a higher link with the accounting numbers, with base in the listed companies in BM&FBOVESPA: Book Value and Dividends or Book Value and Reported Earnings? As theoretical referential was used the models developed firstly by Ohlson (1995; 2003; 2005) and as alternative form the models developed by Brief and Zarowin (1999) and Pourheydari et al (2008) and as data base the non-financial companies with actions negotiated in BM&FBOVESPA of the period of 1997 the 2007. The applied methodology was of analysis of regression - simple regressions and multivariate, through the proposal of Brief and Zarowin (1999) and of Pourheydari et al (2008), analysis of the tendency of R2 and the values of the variables used in the calculation. As conclusion it right to state that dividends have important rule in the models of valuation of assets, with higher informational relevance (R2), but, in some years of the sample that relevance was smaller. Such fact, in Brazil, it can be seemingly due to the following (i) accounting drives to the tax authorities and the credit market; and (ii) higher concentration in the stock market in the Brazil; and still the predominance of a stock market returned to the short-time in counterpoint of long-term investment if compared to more development markets such as the American.

Most research on stock prices is based on the present value model or the more general consumption-based model. When applied to real economic data, both of them are found unable to account for both the stock price level and its volatility. Three essays here attempt to both build a more realistic model, and to check whether there is still room for bubbles in explaining fluctuations in stock prices. In the second chapter, several innovations are simultaneously incorporated into the traditional present value model in order to produce more accurate model-based fundamental prices. These innovations comprise replacing with broad dividends the more narrow traditional dividends that are more commonly used, a nonlinear artificial neural network (ANN) forecasting procedure for these broad dividends instead of the more common linear forecasting models for narrow traditional dividends, and a stochastic discount rate in place of the constant discount rate. Empirical results show that the model described above predicts fundamental prices better, compared with alternative models using linear forecasting process, narrow dividends, or a constant discount factor. Nonetheless, actual prices are still largely detached from fundamental prices. The bubble-like deviations are found to coincide with business cycles. The third chapter examines possible cointegration of stock prices with fundamentals and non-fundamentals. The output gap is introduced to form the non-fundamental part of stock prices. I use a trivariate Vector Autoregression (TVAR) model and a single equation model to run cointegration tests between these three variables. Neither of the cointegration tests shows strong evidence of explosive behavior in the DJIA and S&P 500 data. Then, I applied a sup augmented Dickey-Fuller test to check for the existence of periodically collapsing bubbles in stock prices. Such bubbles are found in S&P data during the late 1990s. Employing econometric tests from the third chapter, I continue in the fourth chapter to examine whether bubbles exist in stock prices of conventional economic sectors on the New York Stock Exchange. The ‘old economy’ as a whole is not found to have bubbles. But, periodically collapsing bubbles are found in Material and Telecommunication Services sectors, and the Real Estate industry group.

This diploma thesis handles the issue of manipulation of prices of securities and other investment instruments. First part of the thesis is dedicated to legal and theoretical introduction into the topic. First, there comes the legal analysis of manipulation on the communitarian level, which is then followed by regulation in Czech legal order. Legal norms are interpreted within the aim, they are following. In addition, supervisory functions of Czech National Bank and Committee of European Securities Regulators are mentioned as well. As for the practical part, the description of different forms of manipulation is followed by the in-depth analysis of impact of investment recommendations to securities' prices. At the end of the thesis, there are some cases of market manipulation, which happened in the past, analysed within the context of actual legal regulation on the field of capital market protection.

The thesis IPO since the technology bubble to Facebook deals with IPO development during the last fifteen years. The cyclical development of numbers and volume of raised capital is observable. From the theoretical point of view the market timing theory reflects this situation very well. Analysis of stock market bubble blowing and bursting performed mainly during the technological revolution at the end of the 20th century and partly during REITs bubble lead to conclusion that there mentioned fundamental indicators are not able to explain the bubble as a whole. According to indicative valuation and comparative methods IPO offer price of the company Facebook was about 23--27 % overvalued. In connection with subsequent problematic development of the company it is not likely to happen that the Facebook's IPO starts a new IPO wave in the internet media sector.

This dissertation examines the reaction of common stock prices to the announcement of changes in bond ratings by Moody's Bond Service, while having a control for differential information availability. The Institutional Brokers Estimate System (I/B/E/S) number of security analysts and coefficient of variation of earning per share (EPS) estimates are used as a proxy for information availability of the firms. Past studies differs in their conclusions as to whether the market has responded to announcement of bond rating changes. None of past studies have controlled for differential information availability. This study, using daily stock returns data and the event study methodology with the statistical test, finds that while the sample of rating downgrades exhibit significantly negative abnormal price effect during the announcement period, the magnitude of this effect is significantly higher for firms with low information availability. For the rating upgrades, the sample as a whole has no abnormal announcement period returns, but the sample of firms with lower information earns significantly positive abnormal returns. This study provides support for the hypothesis that the announcement effect of bond-rating changes is conditional on the information available about the firm.

This study examined the impact of the ceiling test write-off on the stock prices of affected full cost (FC) oil and gas firms.

京都大学 / 0048 / 新制・課程博士 / 博士(経済学) / 甲第21439号 / 経博第586号 / 新制||経||287(附属図書館) / 京都大学大学院経済学研究科経済学専攻 / (主査)教授 柴田 章久, 教授 小佐野 広, 准教授 高橋 修平 / 学位規則第4条第1項該当 / Doctor of Economics / Kyoto University / DGAM

This study examines the impact of strike action on the stock market in SA, particularly the company share price. In recent years, SA has seen a steady increase in strike actions related to wage increases, which have generally been of short duration. The study is conducted by computing abnormal returns and subsequently cumulative abnormal returns for listed companies that had experienced strikes between 2003 and 2009. The sample included 49 listed companies on Johannesburg Stock Exchange. The results of the study reveal that stock prices react negatively to the news of a strike action five days prior to the strike and continue on a downward trajectory approximately 5 days post the strike action. The study finds that JSE is not an efficient market as it takes days for the market to return to equilibrium after an announcement. The research observed that there were numerous factors that influence the occurrence of strikes/industrial actions in South Africa namely; SA’s political history, trade unions irrational behaviour, information asymmetry and economic climate among other factor.