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Interbank contagion under the Basel III regulatory framework
Chleboun, Jakub ; Jakubík, Petr (advisor) ; Lešanovská, Jitka (referee)
This study assesses the impact of the Basel III regulatory framework on interbank contagion. It focuses on the direct interbank contagion that spreads via interbank foreign claims among national banking sectors. A balance sheet-based network model employs the quarterly consolidated banking statistics, collected by the Bank for International Settlements, to simulate the consequences of credit and funding shock under stressed market conditions. Compared to the Basel II, the Basel III regulatory framework reduces the probability of interbank contagion (following a simulated default of one banking sector) from 31% to 14% and lowers the impact of contagion by 63% in terms of average loss for a banking sector. The simulations under both regulatory frameworks show that relatively smaller banking sectors can trigger severe interbank contagion comparable to large banking sectors. Throughout the 2005-2009 period, the Basel III regulatory framework stabilizes the fluctuations of the scope of interbank contagion.
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Capital adequacy of banks - grounds, development and prospects of its regulation
Nádvorník, Petr ; Kotáb, Petr (advisor) ; Dřevínek, Karel (referee)
xi Abstract This thesis aims to provide eclectic legal and economic insight into the history, current principles and possible future development of bank capital adequacy regulation. We have worked with a variety of legal and economic literature and official Basel Committee publications. Our goal was to explore the economic background behind the Basel standards and find its legal ramifications and the incentives they create. In the first chapter, we analyze the economic rationale for banking regulation, explain possible methods of bank capital regulation and juxtapose them with other means of regulatory measures in the field of banking. The first chapter also gives overview of the Basel I framework, its implementation process, describes its utilization of new regulatory techniques, as well as its weaknesses. Second chapter provides overview of Basel II approval process and discusses its transparency and institutionary framework. Problematic issues of CRD directive in the Czech Republic are discussed in contrast with norms of due legislation process. In the next chapter, we describe the mechanics of the Basel II framework. In greater detail, we focus on the issues of securitization, off-balance sheet exposures and methods of "promise-shifting" in the financial system. Examples are used to illustrate the...
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Procyclicality of Bank Lending and Provisioning Behavior
Svoboda, Jan ; Šopov, Boril (advisor) ; Lešanovská, Jitka (referee)
The aim of this paper is to investigate the procyclical behavior of banks in terms of lending and loan loss provisioning, and its dynamics with regard to the adoption of the Basel II capital regulation. Using bank-level and country-level panel data spanning from 1996 to 2013 we answer this question for the OECD and BRIC countries. We find a positive effect of bank capitalization on loans growth, which, perhaps due to the recent financial crisis, weakened after 2008. Together with evidence of income smoothing and capital management we also find strong cyclical behavior of banks in terms of loan loss provisioning. At the same time, we do not find any robust changes to this behavior after the introduction of the Basel II capital regulation. We fill a gap in the empirical literature as there has been hardly any research done on changes brought forward by the adoption of the Basel II capital regulation. The results may be therefore of interest for regulators and other professionals. Moreover, we use in our analysis data for BRIC countries, which have been often neglected.
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Regulatory rules issued by the Basel Committee on Banking Supervision
Beneš, Ondřej ; Dupáková, Lenka (advisor) ; Borkovec, Aleš (referee)
This thesis deals with the regulatory rules issued by the so-called. Basel Committee on Banking Supervision. It is an informal organization without legal personality, which operates at the Bank for International Settlements, and her published documents lack legally binding. This work has focused on two areas of activity of the Basel Committee - capital adequacy and corporate governance in the banking sector. Basel Committee on Banking Supervision is a leading authority in the field of banking regulation, which dates back to the mid-70s of the 20th century. The Basel Committee is composed of the governors of the central banks of the member states and organizations and currently represents a major authority in the banking, because the content of the documents of the Basel Committee incorporated into their legal systems for more than 100 countries worldwide. Basel Committee began issuing complex documents capital adequacy in July 1988, when the first document was posted under the abbreviated name of Basel I. Although it was a very imperfect adjustment and largely based on compromises rather than deeper analysis, Basel I meant the first major step towards supranational control of the capital adequacy of banks in order to eliminate the risks arising from their activities. Although, as with other...
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Interbank contagion under the Basel III regulatory framework
Chleboun, Jakub ; Jakubík, Petr (advisor) ; Lešanovská, Jitka (referee)
This study assesses the impact of the Basel III regulatory framework on interbank contagion. It focuses on the direct interbank contagion that spreads via interbank foreign claims among national banking sectors. A balance sheet-based network model employs the quarterly consolidated banking statistics, collected by the Bank for International Settlements, to simulate the consequences of credit and funding shock under stressed market conditions. Compared to the Basel II, the Basel III regulatory framework reduces the probability of interbank contagion (following a simulated default of one banking sector) from 31% to 14% and lowers the impact of contagion by 63% in terms of average loss for a banking sector. The simulations under both regulatory frameworks show that relatively smaller banking sectors can trigger severe interbank contagion comparable to large banking sectors. Throughout the 2005-2009 period, the Basel III regulatory framework stabilizes the fluctuations of the scope of interbank contagion.
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Backtesting of Different Scaling Rules for Value at Risk in the Basel Context
Klečka, Adam ; Krištoufek, Ladislav (advisor) ; Avdulaj, Krenar (referee)
1 Abstract There is a discrepancy between two important horizon for Value at Risk modelling in the Basel context. We take 10-day values for determining the regulatory capital but we consider 1-day models for backtesting. The main objective of this thesis is to examine the suitability of the currently used Square Root of Time rule for Value at Risk scaling. We compare its performance with the method utilizing Hurst exponent. Our analysis is performed for both the normal and stable distribution. We conclude that the normality assumption and the Square Root of Time rule prevail under the regulatory parameters. The results of the Hurst exponent method are not favourable under normality. On the other hand, the performance for the stable distribution is quite satisfactory under non-Basel parameters and the Hurst exponent complements this distribution very well. Therefore, the use of stable distribution and the Hurst exponent method is justified when dealing with complex non-linear instruments, during turbulent periods, or for general non-Basel setting. In general however, our results are strongly data-dependent and further evidence is needed for any conclusive implications. JEL Classification G21, G28, C58, G32, C14, G18 Keywords value at risk, backtesting, volatility scaling, Basel II, stable distribution, Hurst...
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Stressed Value-at-Risk: Assessing extended Basel II regulation
Pižl, Vojtěch ; Šopov, Boril (advisor) ; Avdulaj, Krenar (referee)
This thesis investigates recently proposed enhancements to the Basel II market risk framework. The Basel Committee on Banking Supervision introduced a stressed Value-at-Risk, calculated from one year long period of financial stress, to be added to the current VaR as a reaction to the shortage in capital reserves of banks and thus their inability to cover extensive losses observed during the recent crisis. We present an empirical evidence that such an extension of the regulatory capital is not optimal. Firstly, supplementing an unconditional methods of VaR estimation, i.e. normal parametric VaR and historical simulation, by SVaR only lead to unnecessarily high capital requirements even in a low volatile periods whilst the same amount of capital during the crisis could be achieved using either the conditional GARCH VaR with student's-t innovations or the volatility weighted historical simulation. Moreover, we showed that all unconditional methods fail to capture volatility clusters such as the 2008 crisis.
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Procyclicality in Basel II and Basel III
Šobotníková, Petra ; Teplý, Petr (advisor) ; Jakubík, Petr (referee)
The term procyclicality refers to the ability of a system to amplify business cycles. The recent financial crisis has revealed that the current regulatory framework, Basel II, affects the business cycle in exactly that manner. The newly published Basel III therefore sought to include tools that would mitigate the procyclical nature of regulatory framework. The aim of the thesis is to analyze whether such tools are effective and whether the procyclicality under Basel III has been mitigated when compared to Basel II. In order to conduct such analysis we employ a simple model with the households and firms sector. Using the OLS estimation method we estimate the sensitivity of Basel risk weights to the business cycle under both Basel II and Basel III conditions. As the Basel III framework has been published only recently, there are few studies that would analyze its effect on procyclicality. The main contribution of this thesis consists of implementation of Basel III countercyclical tools and the comparison between both frameworks. The thesis further contributes to the existing literature by conducting the analysis on the data for the Visegrád Group, that is for the Czech Republic, Slovakia, Hungary and Poland. JEL Classification E32, E44, E58, G21 Keywords procyclicality, Basel II, Basel III, banking...
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Optimization capital charges in VaR model utilizing dynamic risk management strategies
Kyjonková, Petra ; Baxa, Jaromír (advisor) ; Doležel, Pavel (referee)
Diploma thesis "Optimization capital charges in VaR model utilizing dynamic risk management strategies" deals with banks opportunity to reduce Basel capital requirements via estimation volatility in VaR model for separate time periods differently. It analyses current crisis, its sources, process, but especially its influence of new worldwide accepted regulatory standards, which require nearly doubled regulatory capital. Regarding high impact to industry return on equity the thesis discusses the possibility of dynamic capital optimization based on alternating conservative and aggressive risk management strategies. Empirical part of thesis tests outcomes of volatility modeling based on historical quotes of six European indexes since 2003, which are classified by volatility levels and broken down into several time periods. We suggest approach which enables financial institutions to reduce the impact of new Basel rules on their ROE, while they meet all VaR model conditions defined by the regulator. However, there are also negative consequences of this lowering level of capital represented by increasing failure rates of models. Although banks are able by suggested approach to achieve capital reduction by 20 percent, they are in the same time forced to use one of a very aggressive strategies. Dynamic...
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Interbank contagion under the Basel III regulatory framework
Chleboun, Jakub ; Jakubík, Petr (advisor) ; Lešanovská, Jitka (referee)
This study assesses the impact of the Basel III regulatory framework on interbank contagion. It focuses on the direct interbank contagion that spreads via interbank foreign claims among national banking sectors. A balance sheet-based network model employs the quarterly consolidated banking statistics, collected by the Bank for International Settlements, to simulate the consequences of credit and funding shock under stressed market conditions. Compared to the Basel II, the Basel III regulatory framework reduces the probability of interbank contagion (following a simulated default of one banking sector) from 31% to 14% and lowers the impact of contagion by 63% in terms of average loss for a banking sector. The simulations under both regulatory frameworks show that relatively smaller banking sectors can trigger severe interbank contagion comparable to large banking sectors. Throughout the 2005-2009 period, the Basel III regulatory framework stabilizes the fluctuations of the scope of interbank contagion.
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