Made available in DSpace on 2015-03-03T15:22:31Z (GMT). No. of bitstreams: 1 JackelyaAS.pdf: 313251 bytes, checksum: 729c2692ae341877eba59b8ce2bf93dd (MD5) Previous issue date: 2008-03-11 / In this work we study a new risk model for a firm which is sensitive to its credit quality, proposed by Yang(2003): Are obtained recursive equations for finite time ruin probability and distribution of ruin time and Volterra type integral equation systems for ultimate ruin probability, severity of ruin and distribution of surplus before and after ruin / Neste trabalho estudamos um novo modelo de risco para uma empresa que ? sens?vel a classica??o de risco de cr?dito, proposto por Yang(2003): Obtemos equa??es recursivas para a probabilidade de ru?na em tempo nito, distribui??o do tempo de ru?na, sistemas de equa??es integrais do tipo Volterra para severidade e distribui??o conjunta do capital antes e depois da ru?na

This thesis consists of four independent chapters on bank capital regulation and the issue of unsolicited ratings.<p><p>The first chapter is introductory and reviews the motivation for regulating banks and credit rating agencies while providing a detailed overview of the thesis.<p><p>The second chapter uses a simultaneous equations model to analyze how banks from six G10 countries adjusted their capital to assets ratios and risk-weighted assets to assets ratio between 1988 and 1995, i.e. just after passage of the 1988 Basel Accord. The results suggest that regulatory pressure brought about by the 1988 capital standards had little effect on both ratios for weakly capitalized banks, except in the US. In addition, the relation between the capital to assets ratios and the risk-weighted assets to assets ratio appears to depend not only on the level of capitalization of banks, but also on the countries or groups of countries considered.<p><p>The third chapter provides Monte Carlo estimates of the amount of regulatory capital that EMU banks must hold for their corporate, bank, and sovereign exposures both under Basel I and the standardized approach to credit risk in Basel II. In the latter case, Monte Carlo estimates are presented for different combinations of external credit assessment institutions (ECAIs) that banks may choose to risk weight their exposures. Three main results emerge from the analysis. First, although the use of different ECAIs leads to significant differences in minimum capital requirements, these differences never exceed, on average, 10% of EMU banks’ capital requirements for corporate, bank, and sovereign exposures. Second, the standardized approach to credit risk provides a small regulatory capital incentive for banks to use several ECAIs to risk weight their exposures. Third, the minimum capital requirements for the corporate, bank, and sovereign exposures of EMU banks will be higher in Basel II than in Basel I. I also show that the incentive for banks to engage in regulatory arbitrage in the standardized approach to credit risk is limited.<p><p>The fourth and final chapter analyses the effect of soliciting a rating on the rating outcome of banks. Using a sample of Asian banks rated by Fitch Ratings, I find evidence that unsolicited ratings tend to be lower than solicited ones, after accounting for differences in observed bank characteristics. This downward bias does not seem to be explained by the fact that better-quality banks self-select into the solicited group. Rather, unsolicited ratings appear to be lower because they are based on public information. As a result, they tend to be more conservative than solicited ratings, which incorporate both public and non-public information.<p> / Doctorat en sciences économiques, Orientation économie / info:eu-repo/semantics/nonPublished

This thesis deals with globalisation of markets. It focuses on examining the economic crisis of 2008 and 2010 and on how individual countries can cope with deteriorating of macroeconomic values, especially with financial implications of this situation. The thesis also examines credit rating agencies as indicators of financial soundness of investment instruments, to which is often reffered as to culprits of the crisis for their reaction to the development of the mortgage market. The thesis defines the rating in the concept of sovereign states and describes the market of credit rating agencies. It further evaluates individual rating agencies and practices in the context of the crisis, bringing a comprehensive picture of the role they played at the beginning of the crisis. It also attempts to outline more points of view on the previously unilaterally and predominantly negatively perceived issue of reputation of credit rating agencies.

The thesis deals with the topic of bank guarantees in the construction industry focusing on the contractor of the construction commission. The aim of this paper is the definition of bank guarantees in legal and economic terms, and on the basis of available literature, and also a proposal for the application of a bank guarantee in construction contracts. This thesis includes an overview of the products offered by national bank institutions in the field of bank guarantees and their comparison. The thesis contains an overview and description of bank guarantees used in the construction industry. The thesis focuses on a bank guarantee for the proper execution of the work (for the correct execution of the contract for work). There is described the progress of the guarantee from the contract for work until the warranty exercise and any dispute over the amount paid under the guarantee. Further, the paper deals with the use of bank guarantees in practice from the point of view of construction companies, focusing on the guarantee for the proper execution of the work. The thesis also describes solutions in the field of bank guarantees of construction companies, ways of surety, credit limits and bank charges for bank guarantees. In conclusion, there are described terms of the bank guarantee in the contract for work for the specific construction contracts and a method of preparation of the bid price for the contract with regard to where the cost appears applying the bank guarantee at the contractor's bid price. The contribution of this thesis is a comprehensive overview of bank guarantees in the construction industry and their application intended for a contractor of the construction commission.

The impact of climate change on the financial performance of companies is of concern to bank credit processes. The main objective of this research was to develop a South African contextualised credit process that incorporates environmental risk. The research methodology comprised of a mixed-method being content analysis – the qualitative portion and the Probability of Default prediction using a Merton Model and the Hoffmann and Busch (2008) carbon risk analysis model - the quantitative portion. A content analysis of the banks’ Annual Reports, Integrated Reports and Sustainability Reports showed that, while South African banks follow a qualitative approach to embedding environmental risk into their credit process, none of the four banks that formed part of the study divulged their quantitative approach to embedding environmental risk. The study used a proximity matrix method to examine the level of embedding. The second part of the study, which used prior studies as the benchmark, adopted the following: (1) a simulated carbon tax regime as a proxy for an environmental risk, and (2) the Hoffmann and Busch (2008) carbon risk analysis tool and the Merton Model (1974) as the bank credit process proxies. The second part of the study used a sample of 33 JSE-listed Carbon Disclosure Project reporting companies out of a population of 107. The carbon risk analysis showed that the companies in the materials and energy sector have a high carbon risk. However, the results from the Merton Model showed that the companies have enough profit to cushion the additional carbon tax liability, given the insignificant shift in probability of default between the three scenarios, where financial data had (1) no carbon tax, (2) was adjusted for a carbon tax with incentives, and (3) adjusted for carbon tax without incentives. Triangulation of the results from the content analysis, carbon risk analysis and the probability of default analysis confirms that South African banks do not fully integrate environmental risk across the credit value chain or process in the 2010 to 2017 period. However, the carbon risk analysis shows a heavy dependency on carbon sources for critical inputs into the South African companies’ production processes, which if not checked, will affect the credit portfolios of banks. / Finance, Risk Management and Banking / D. Phil (Management Studies)

Die vorliegende kumulative Dissertationsschrift beschäftigt sich mit theoretischen Fragestellungen der Finanzwissenschaft im Bereich des Asset Pricing und im Detail der Unternehmensbewertung. Dabei wird sowohl auf Problemstellungen der akademischen und praxisnahen Forschung eingegangen. Der erste Artikel beschäftigt sich mit der Fragestellung welche Implikationen die Annahme einer arithmetischen Brownschen Bewegung auf bestimmte Aspekte der Unternehmensbewertung hat. Es folgen drei Artikel die sich auf unterschiedliche Weise mit der Zinsschrankenregelung auseinandersetzen. Die darauf folgenden zwei Artikel behandeln hauptsächlich die Modellierung von Insolvenz im Rahmen der Unternehmensbewertung bei Annahme verschiedener Finanzierungspolitiken. Der achte Artikel geht näher auf die Thematik der empirischen Bestätigung bestimmter Kapitalstrukturtheorien ein. Die Dissertation schließt mit einem Artikel zu wichtigen Parametern für die Unternehmensbewertung.:1. Thematische Einordnung und Forschungsbeitrag … 1 2. The Arithmetic Brownian Motion in Corporate Valuation … 12 3. Die Bewertung der Zinsschranke … 52 4. Zinsschranke, Unternehmensbewertung und APV-Ansatz- eine Anmerkung zum Beitrag von Förster/Stöckl/Brenken (ZfB 2009, S. 985 ff.) … 97 5. Der Einfluss der Zinsschranke auf den Unternehmenswert … 122 6. Tax Shield, Insolvenz und Zinsschranke … 147 7. Tax Shield, Insolvenzwahrscheinlichkeit und Zinsschranke - eine empirische Analyse … 207 8. Zur Überprüfung von Kapitalstrukturtheorien in einer von Krisen geplagten Zeit … 249 9. Die Kapitalmarktdaten von www.finexpert.info und der Fachverlag Gruppe … 291

Die vorliegende kumulative Dissertationsschrift beschäftigt sich mit finanzwissenschaftlichen Fragestellungen im Bereich der Unternehmensbewertung. Dabei wurden aktuelle Themen diskutiert, die in Theorie oder Praxis ungelöste Probleme darstellen. Hervorzuheben ist an dieser Stelle, dass sich die ersten drei Artikel mit dem Werteinfluss der Zinsschanke auf den Wert von fremdfinanzierungsbedingten Steuerersparnissen (Tax Shield) beschäftigen. Die drei darauf folgenden Artikel beschäftigen sich schwerpunktmäßig mit der konsistenten Modellierung von Finanzierungspolitiken und dem Werteinfluss der Insolvenzmöglichkeit von Unternehmen. Der siebte und achte Artikel haben die Kapitalstruktur und weitere wichtige Parameter für die Unternehmensbewertung zum Thema.:1. Thematische Einordnung und Forschungsbeitrag … 1 2. Die Bewertung der Zinsschranke … 14 3. Zinsschranke, Unternehmensbewertung und APV-Ansatz - eine Anmerkung zum Beitrag von Förster/Stöckl/Brenken (ZfB 2009, S. 985 ff.) … 59 4. Der Einfluss der Zinsschranke auf den Unternehmenswert … 84 5. Tax Shield, Insolvenz und Zinsschranke … 109 6. Tax Shield, Insolvenzwahrscheinlichkeit und Zinsschranke - eine empirische Analyse … 169 7. The Impact of Credit Rating and Frequent Refinancing on Firm Value … 211 8. Zur Überprüfung von Kapitalstrukturtheorien in einer von Krisen geprägten Zeit … 258 9. Die Kapitalmarktdaten von www.finexpert.info und der Fachverlag Gruppe … 300

【第一篇論文中文摘要】 本文檢測公司負債合約中的利差是否可被最終的違約後償還率所解釋。透過1962年至2007年間在美國金融市場上發行但最後卻違約的負債合約資料來進行實證，發現違約後償還率的確有反映在發行時的利差上，且此關聯性會隨著美國開放商業銀行進行證券承銷業務後隨之更加顯著。我們並且進一步發現此償還率的資訊能更加有效反映原因與發行公司的資訊不對稱程度降低有關。此外，我們同時又發現此負債合約中的利差與違約後償還率的關聯性對於公司治理較差、以及非投資等級的發行公司會更為顯著。最後，我們的實證結果在考量內生問題、潛在可能遺漏解釋變數、以及其他模型設定後，仍同樣具有堅實性。 【第二篇論文中文摘要】 本文使用臺指選擇權的日內資料來探討選擇權提前交易期間是否具有資訊內涵與價格發現的功能。就作者所知，我們是第一篇透過選擇權資料探討提前交易期間資訊內涵的研究。首先，我們分別透過價、量、與高階動差三類資訊變數指標來衡量提前交易期間的資訊內涵。實證結果顯示：選擇權提前交易期間不只能有效反映隔夜資訊 (公開資訊)，且具有預測當日現貨指數開盤後5分鐘內股價指數移動的能力 (反應私有資訊)，說明提前交易期間的確具有資訊內涵與價格發現的功能。此外，我們進一步發現價平選擇權包含最強的資訊內涵，此應與投資人尋求交易流動性最高的價平選擇權來迅速實現其利潤以反映其資訊有關。最後，本研究亦發現前一日海外市場 (美國) 投資人情緒傳染效果的強度會影響提前交易期間選擇權的資訊內涵，而前一日是否交易 (週末效果與假日效果)則不會影響此資訊內涵。 / 【第一篇論文英文摘要】 We investigate whether the spread of corporate debt contacts can be explained by their ultimate recovery rates. Using the actual realized recovery rates of defaulted debt instruments issued in the U.S. from 1962 to 2007, we find that recovery rate is reflected in the spread at issuance, and that this relationship has become more significant since commercial banks were allowed to underwrite corporate securities. Our further investigation indicates that the enhanced informativeness of recovery rate can be attributed to the lowering of information asymmetry of individual firms. Besides, the relation between the spread at issuance and the recovery rate is stronger for weak corporate governance and non-investment grade issuers. Our conclusions are found to be robust to endogeneity issues, potentially omitted variables and alternative model specifications. 【第二篇論文英文摘要】 This study uses tick-by-tick data to examine the information content and price discovery of TAIEX option trading during the pre-opening period. To the best of our knowledge, this is the first study that focuses on the options market. We construct three groups of information variables to measure the information content of the pre-opening period, including the price, volume, and high moment information variables. We find that option trading during the pre-opening period not only can reflect the overnight information (public information) but also predict the 5-minute intraday returns after the opening of spot market (private information), showing the information content and price discovery of option trading during the pre-opening period. We also find that at-the-money options contain the strongest richness of information content, which may result from its highest liquidity. Finally, we also find that the empirical results would be stronger depending on the intensity of investor sentiment from overseas (U.S. market) of last day but not the length of hours without trading (weekend and holiday effect).