V mé diplomové práci porovnávám riziko nesplacení pohledávky a náklady jejího zajištění prostřednictvím zajišťovacích instrumentů dostupných na českém trhu a ověřuji, zdali je v daném případě ekonomicky výhodné zajišťovací instrument využít nebo ne. Za pomoci bankrotních modelů a tranzitivních matic ratingových agentur analyzuji pravděpodobnost úpadku firmy do jednoho roku a následně ji promítám do hodnoty pohledávky. Toto riziko kvantifikované přes očekávanou ztrátu porovnávám s náklady na její zajištění u bankovní záruky, dokumentárního akreditivu a faktoringu.

Dissertation thesis deals with the topic of capital adequacy of financial institutions and tries to solve the problem of default and its prediction. In the theoretical part, the thesis provides summarization of historic and current approaches to capital adequacy of financial institutions and also presents currently used methodology of scoring models, which predict default of companies. Application part of the thesis aims to develop a scoring model, which would be usable by financial institutions for evaluation of their clients and their tendency to default.

The significance of credit risk models has increased with the introduction of new Basel accord known as Basel II. The aim of this study is default rate modeling. This thesis follows the two possible approaches of a macro credit risk modeling. First, empirical models are investigated. Second, a latent factor model based on Merton's idea is introduced. Both of these models are derived from individual default probability models. We employed data over the time period from 1988 to 2003 of the Finnish economy in the first part of this thesis. Time series of bankruptcy and firm's numbers were used. Aggregate data for whole economy as well as industry specific data were available. First, linear vector autoregressive models was used in case of dynamic empirical model. We examined how significant macroeconomic indicators determined the default rate in the whole economy and in the industry specific sector. However these models cannot provide microeconomic foundation as latent factor models. We employed a one- factor model in our estimation although, multi-factor models were also considered. A one-factor model was estimated using disaggregated industrial data. This estimation can help understand relation between credit risk and macroeconomic indicators. Obtained results were used in the second part of this...

Stress testing is a macro-prudential analytical method of assessing the financial system's resilience to adverse events. This thesis describes the methodology of the stress tests and illustrates the stress testing for credit and market risks on the real bank-by-bank data in the two Balkan countries: Croatia and Serbia. Credit risk is captured by the macroeconomic credit risk models that estimate the default rates of the corporate and the household sectors. Setting-up the framework for the countries that were not much covered in former studies and that face the limited availability of data has been the main challenge of the thesis. The outcome can help to reveal possible risks to financial stability. The methods described in the thesis can be further developed and applied to the emerging markets that suffer from the similar data limitations. JEL Classification: E37, G21, G28 Keywords: banking, credit risk, default rate, macro stress testing, market risk

This master thesis analyzes the relationship between the change of sovereign rating and market behaviour. The first part is devoted to rating itself. I present the various types of the rating, development, structure and risks of the market for credit rating agencies. The second part focuses on the nature of government bonds and the methodology for determining credit rating. The third part contains an analysis of market indicators in selected countries, econometric analysis of the relationship between credit ratings and risk perception in the market and comparison with other indicators of potential default. I summarize all the knowledge in the conclusion and I am trying to predict future developments in the market for credit rating agencies.

Markov chains have been widely used to the credit risk measurement in the last years. Using these chains we can model movements and distribution of clients within rating grades. However, various types of markov chains could be used. The goal of the theses is to present these types together with their advan- tages and disadvantages. We focus our attention primarily on various parameter estimation methods and hypotheses testing about the parameters. The theses should help the reader with a decision, which model of a markov chain and which method of estimation should be used for him observed data. We focus our attention primarily on the following models: a discrete-time markov chain, a continuous-time markov chain (we estimate based on continuous- time observations even discrete-time observations), moreover we present an even- tuality of using semi-markov chains and semiparametric multiplicative hazard model applied on transition intensities. We illustrate the presented methods on simulation experiments and simu- lation studies in the concluding part. Keywords: credit risk, markov chain, estimates in markov chains, probability of default 1

The thesis "Credit risk from Basel II point of view" deals with new capital concept with main focus on the credit risk. The particular emphasis is laid on the chief issue of Basel II concept i.e. internal models. The thesis quite in detail describes the usage of basel parameters - LGD particularly - in various day-to-day business processes of credit institutions. An individual part of the thesis is devoted to credit risk mitigants and their impacts on the amount of capital requirements. The analysis carried out precedent Basel II implementation indicated the launching of Basel II should imply risk weighted assests to credit risk decline. This documents the last chapter.

The diploma thesis focuses on issuance of the primary bond by non-financial companies on the Prague Stock Exchange (PSE). In the theoretical part were described the main parameters of securities and financial indicators of companies that build the risk premium and discussed options of risk-free base. The application part presents the evaluation of major factors influencing price and bond rates on the example of emissions carried on the PSE.