This thesis deals with the impact of quantitative easing on public sector bond yields of selected countries in the world. It mentions channels of standard monetary policy tools and channels of quantitative easing, which can be included among unconventional monetary policy tools. This thesis analyses the impacts of quantitative easing, which was done by the Federal Reserve System, the Bank of England and the European Central Bank. Firstly, all these institutions fought against the financial crisis with standard monetary policy tools. However, those tools were not very effective, therefore the institutions moved to non-standard tools. After the analysis based on event-study method was carried out, it was found out that mainly the first announcements about the policy of quantitative easing were always the most effective in decreasing government bond yield. The subsequent expansion of the policy of quantitative easing did not have such impact. The main benefit of this thesis is in the examination of the impact of later statements regarding quantitative easing on government bond yield, which were not effective in decreasing government bond yield.

This thesis examined the effect of non-financial motives, namely pro-environmental or sustainability preference, in bond pricing on the European secondary market before and during the COVID-19 crisis over the period 02.01.2019-26.02.2021. To estimate the potential yield spread between green bonds and matched conventional bonds, we applied a stringent matching method and fixed-effect regression to explore the green bond premium. The result indicated a small positive premium of 0.46 bps before the COVID-19 (01.2019-02.2020) and a small negative premium of 0.2 bps during the ongoing COVID-19 crisis (03.2020-02.2021), and the premiums have significantly changed between the two study periods, implying that the COVID-19 had a significant effect on the GB premium. Thus, before the pandemic, investors demanded compensation in the form of a higher yield return on investing in green bonds; however, during the pandemic, investors are willing to accept a lower yield on the GBs in comparison to the equivalent CB to finance environmentally-friendly projects. Additionally, the paper investigated bond volatility by analyzing the standard deviation of the daily yield. Although green bonds tended to have a higher volatility, no robust conclusion could be drawn due to a lack of statistical significance.

While numerous studies have investigated the impact of oil prices on the stock market, Chapter 2 is the first to examine the association between corporate bond yields and oil returns. We examine the association between oil-returns and corporate bond yields of four major U.S. industrial and financial sectors (including thirteen sub-sectors). Chapter 3 examines the reaction of stock markets in the U.K. and the Netherlands to a major composite event in the oil industry – the merger of the Royal Dutch Shell (RDSA) and the BG Group (BRGYY) on April 8, 2015, and the subsequent discovery of oil in southern England on April 9. We employ an exponential autoregressive conditionally heteroskedastic (EGARCH (1, 1)) framework in both Chapters, which allows for asymmetry of the effects between positive and negative external shocks including oil return shocks, shows the effects on both the yields/stock returns and their volatilities, and permits the persistence of the shocks to be measured. Three main results are obtained in Chapter 2. First, oil returns are significantly associated with the yield levels of corporate bonds issued in ten out of the thirteen sub-sectors considered within the oil-substitute, oil-related, oil-user, and financial services sectors. The three exceptions are the Petroleum Refinery, Building, and Chemical sub-sectors. Second, the return volatilities of corporate bonds issued in the Plastic & Rubber sub-sector demonstrate asymmetric responses to positive and negative shocks. To elaborate, negative shocks lead to lower volatility in the Plastic & Rubber sub-sector than positive shocks of the same magnitude. Third, the half-life, or the time it takes for the volatility of the portfolio of bonds in the Industrial Machinery sub-sector to move halfway back to its conditional mean after a shock is introduced, is 8.6 months. For bonds in all other sub-sectors, the half-life is less than 2.5 months. We obtain several results in Chapter 3. First, the composite event of merger and oil discovery generated significant abnormal returns in six out of the thirteen sub-sectors considered in the U.K. and three out of ten sub-sectors in the Netherlands. The remaining seven sub-sectors in the U.K. and the other seven sub-sectors in the Netherlands show no sensitivity in returns to the shock. Second, there is evidence of some information leakage about the composite event as demonstrated in the significant abnormal returns for Coal, Oil & Gas Extraction, Depository Institute, Chemical and Plastic & Rubber sub-sectors in U.K. and Coal, Depository Institute and Air Transportation sub-sectors in the Netherlands up to three days before the announcement of the composite event. Third, the behavioral patterns of four of the thirteen sub-sectors considered in the U.K. and four of the ten sub-sectors considered in the Netherlands demonstrate asymmetry in response to external shocks to their respective returns. These results have three main implications. First, investors holding bonds issued by the two sub-sectors with asymmetric oil shock effects need to add bonds from oil-related and oil-substitute sectors to lower the volatility of their bond portfolio because the latter do not exhibit asymmetry. Second, considering the overall finding of sensitivity to oil price changes, institutional investors need to examine the sensitivity of their bond portfolios to oil return changes and to guard against excessive risk. Similarly, corporations should monitor oil price variations and hedge the volatility risk accordingly. Finally, stock investors in the U.K. and the Netherlands might benefit from monitoring the key events that may affect the oil supply and oil prices, and acting accordingly. / Economics

Diploma Thesis focuses on Fed Model testing and its credibility on market data. The research is based on Gordon Model and Capital Asset Pricing Model (CAPM), it explains, what the basic features of the Fed Model are and describes its derivation from Gordon Model. The Thesis shows possible Fed Model limitation. It uses the US market, Great Britain and Germany 1979 -- 2011 data to demonstrate validity of the model. Eventually possible reasons of Fed Model development in period 2002 -- 2011 are presented.

Thesis deals with the attraction of Czech government bonds from the perspective of foreign investors in relation with the current economic development in CEE region, and further in the rest of the world. Analysis is targeted to issue of the Czech government bonds in turn of 2009 and 2010. After the analysis and description of foreign investors representing huge part of the entire demand for the Czech government bonds on the domestic and foreign markets the paper further covers individual pros and cons of the instrument. The empirical analysis is conducted as the comparison of the yields and risk of Czech goventment bonds with the similar instruments issued by Hungarian and Slovakian governments. Separate part of the thesis covers the characteristics of used instruments (Czech T-Notes and T-Bills) and legal adjustments of the auctions through which these instruments are placed on the domestic market. Thesis also contains a separate chapters covering the results of former issues of the Czech government bonds abroad and the analysis of tax consequences resulting from holding and selling the Czech government bonds by foreign investors.

Cette thèse étudie le risque de crédit souverain et son impact sur les banques et les entreprises. Le premier essai montre que le risque de crédit bancaire est lié au risque de crédit souverain via l’exposition commune au risque systémique au lieu du sauvetage implicite ou de l’exposition excessive aux obligations émises par le pays d’origine. Dans le deuxième essai, je construis un modèle de structure du capital qui prédit une corrélation négative entre le niveau d’endettement des grands entreprises et le risque de crédit souverain à cause du sauvetage implicite. Cette prédiction est confirmée en suite par des preuves empiriques des entreprises dans la zone euro. Le troisième essai donne un modèle joint de CDS et d’obligation pour identifier les composantes de défaut et de liquidité dans les spreads de CDS et les rendements obligataires. Je trouve une composante de liquidité importante dans les spreads de CDS des pays périphériques de la zone euros et conclus que le fait de ne pas prendre en compte de l’illiquidité des CDS conduit à surestimer la composante de défaut dans le rendement obligataire. / This thesis studies sovereign credit risk and its impact on banks and industrial firms. The first essay shows that bank credit risk is linked to sovereign credit risk through common exposure to systemic risk instead of implicit bailout or excessive holding of home country bonds. In the second essay, I build a trade-off model of capital structure which predicts negative correlation between optimal leverage of big firms and sovereign credit risk due to implicit bailout. The model prediction is confirmed by empirical evidence from firms in the euro area. The third essay provides a joint pricing model of CDS and bond to disentangle the default and liquidity component in CDS spread and bond yield spread. I find a remarkable liquidity component in the CDS spreads of peripheral euro area countries and conclude that ignoring CDS illiquidity leads to overestimation of default component in bond yield.

This diploma thesis focuses on the issue of the Central European bond market and the analysis of state securities of the Vysegrad Region. The first chapter describes the state bond and its typical features. The second chapter is devoted to two specific forms of a bond, namely an inflated bond and a zero-coupon bond. This part is not only theoretical, but is also practically focused on the analysis of these less widely used forms of bonds. The third chapter discusses the knowledge gained in the theoretical portion, through the comparison of government bonds and the empirical yield curve. The second half is focused on the comparison of sovereign bond trades and rating developments in the countries concerned.

Cette thèse s'intéresse aux questions d'accès aux marchés financiers dans les économies émergentes et en développement. La première partie donne un aperçu général des conséquences macroéconomiques de l'un des régimes de politique monétaire le plus favorable au marché - le ciblage d'inflation - en utilisant le cadre d'analyse de la méta-analyse. La deuxième partie analyse le risque et la stabilité des marchés obligataires des États. La troisième et dernière partie examine les effets disciplinaires résultant de la participation aux marchés obligataires souverains. Plusieurs résultats émergent. Au chapitre 1, les résultats indiquent que la littérature sur les effets macroéconomiques du ciblage d'inflation est sujette à des biais de publication. Après avoir purgé ces biais, le véritable effet du ciblage d'inflation reste statistiquement et économiquement significatif à la fois sur le niveau de l'inflation et la volatilité de la croissance économique, mais ne l’est pas sur la volatilité de l'inflation ou le taux de croissance économique réel. Aussi, les caractéristiques des études déterminent l’hétérogénéité des résultats de l'impact du ciblage d’inflation dans les études primaires. Le chapitre 2 montre que l'adoption d'un régime de ciblage d'inflation réduit le risque souverain dans les pays émergents. Cependant, cet effet varie systématiquement en fonction du cycle économique, de la politique budgétaire suivie, du niveau de développement et de la durée dans le ciblage. Le chapitre 3 montre que les envois de fonds des migrants, contrairement aux flux d'aide au développement, permettent de réduire le risque souverain. Cette réduction est plus marquée dans un pays avec un système financier moins développé, un degré d'ouverture commerciale élevé, un espace budgétaire faible et sans effet dans les pays dépendants des envois de fonds. Le chapitre 4 montre que les pays ayant des contrats d’échange sur risque de crédit sur leurs dettes sont plus sujets à des crises de dette. Il constate également que cet effet reste sensible aux caractéristiques structurelles des pays. Le chapitre 5 montre que la participation aux marchés obligataires de long terme (domestiques et internationaux) encourage les gouvernements des pays en développement à accroître leurs recettes fiscales intérieures. Il révèle également que l'effet favorable dépend du niveau des recettes de seigneuriage, d’endettement, du régime de change, du niveau de développement économique, du degré d’ouverture financière, et du développement financier. Le chapitre 6 montre que la présence de marchés obligataires domestiques, de long terme et liquides réduit considérablement le degré de dollarisation financière dans les pays en développement. Cet effet est plus important dans les pays avec un régime monétaire de ciblage d’inflation ou de change flottant, et à règles budgétaires. Enfin, il constate que la présence de marchés obligataires domestiques réduit la dollarisation financière à travers la baisse du niveau et de la variabilité de l'inflation, de la variabilité du taux de change nominal, et des revenus de seigneuriage. / This thesis focuses on some critical issues of the access to international financial markets in developing and emerging market economies. The first part provides a general overview of the macroeconomic consequences of one of the most market-friendly monetary policy regime—inflation targeting—using a meta-regression analysis framework. The second part analyses government bond market risk and stability. The last part investigates the disciplining effects of government bond market participation—bond vigilantes. In Chapter 1, the results indicate that the literature of the macroeconomic effects of inflation targeting adoption is subject to publication bias. After purging the publication bias, the true effect of inflation targeting appears to be statistically and economically meaningful both on the level of inflation and the volatility of economic growth, but not statistically significant on inflation volatility or real GDP growth. Third, differences in the impact of inflation targeting found in primary studies can be explained by differences in studies characteristics including the sample characteristics, the empirical identification strategies, the choice of the control variables, inflation targeting implementation parameters, as well as the study period and some parameters related to the publication process. Chapter 2 shows that the adoption of inflation targeting regime reduces sovereign debt risk in emerging countries. However, this relative advantage of inflation targeting—compared to money or exchange rate targeting—varies systematically depending on the business cycle, the fiscal policy stance, the level of development, and the duration of countries’ experience with inflation targeting. Chapter 3 shows that remittances inflows significantly reduce bond spreads, whereas development aid does not. It also highlights that the effect of remittances on spreads arises in a regimes of lower developed financial system, higher degree of trade openness, lower fiscal space, and exclusively in non-remittances dependent regimes. Chapter 4 indicates that countries with credit default swaps contracts on their debts have a higher probability of experiencing a debt crisis, compared to countries without credit default swaps contracts. It also finds that the impact of credit default swaps initiation is sensitive to several structural characteristics including the level of economic development, the country creditworthiness at the timing of credit default swaps introduction, the public sector transparency, the central bank independence; and to the duration of countries’ experiences with credit default swaps transactions. Chapter 5 shows that bond markets participation encourages government in developing countries to increase their domestic tax revenue mobilization. Finally, it finds that bond markets participation improves the mobilization of internal taxes, compared to tax on international trade, and reduces their instability. Chapter 6 shows that the presence of domestic bond markets significantly reduces financial dollarization in domestic bond markets countries. This effect is larger for inflation targeting countries compared to non-inflation targeting countries, is apparent exclusively in a non-pegged exchange rate regime, and is larger when there is a fiscal rule that constrains the conduct of fiscal policy. Finally, it finds that the induced drop in inflation rate and its variability, nominal exchange rate variability, and seigniorage revenue are potential transmission mechanisms through which the presence of domestic bond markets reduces financial dollarization in domestic bond markets countries.

聯邦模型（Fed Model）為一簡單股市報酬估計模型，認為股市之報酬率與政府十年期公債殖利率相近。本研究以此模型對亞太地區十個市場進行探討，並以反序累積平方和（Reversed Ordered Cusum squared，ROC）的方式偵測市場之結構變異，以做出更精確的預測與分析。所研究的市場包括澳洲、紐西蘭、日本、台灣、南韓、新加坡、香港、泰國、馬來西亞、以及菲律賓。我們得到的結論認為聯邦模型在澳洲、紐西蘭、日本、南韓、新加坡、及菲律賓的確有其效果存在，且在考量可能產生結構變異的時間點後，可使預測準確度提高。因此，我們可採用聯邦模型，做為資產在股市與債市間配置之參考工具。 / The Fed Model indicates that the stock market returns are very close to the long-term government bond yields. This article examines the Fed model in 10 main Asia-Pacific markets- Australia, New Zealand, Japan, Taiwan, Korea, Singapore, Hong Kong, Thailand, Malaysia, and Philippine. The Reversed Ordered Cusum squared (ROC) test is used to detect the structural changes, and improve the out-of-sample forecasting results. We conclude that the Fed Model has some prediction power in these 10 markets, and can be considered as a useful dynamic asset allocation tool.