The Role of CDS Market in the Price Discovery Process of the “PIIGS” Countries Sovereign Credit Risk During the Recent Decade of Monetary Easing

The aim of this paper is to analyze the long-lasting dynamic relationship between the credit default swap (CDS) premia and the government bond spreads (GBS), with regard to the sovereign credit risk. The practical focus is to evaluate whether the CDS market effectively is the leading or the lagging market in the credit risk price discovery process during the last decade of monetary easing. The analysis extends to all “sensitive” countries in the Eurozone, the so-called “PIIGS” countries (excluded Greece) for the interval 2007-2017. JEL classification numbers: G01, G12, G14, G20. Keywords: CDS spread, Government bond spread, Sovereign credit risk, Cointegration, Vector error correction model, Granger-causality.

Measuring Sovereign Credit Risk of the EU countries

European countries have increased significantly their public debt since the Global Financial Crisis. The increasing trend and the high concentration of public debt in portfolios of financial institutions can lead to a financial turmoil we witnessed during the European Sovereign Debt Crisis. Financial stability authorities therefore look for models to measure the sovereign credit risk and develop“what-if”scenarios to assess a potential repercussion of a financial institution rescue or of an economic contraction on sovereign credit risk. The presented article introduces adjustments to the sovereign contingent claims analysis that is based on the Merton´s Credit Risk Model and the Black-Scholes option pricing techniques. The article proposes adjustments by introducing a new view on a stylised liability side of a central government balance sheet, seniority of its items, and a new proxy for risk measure of junior claims. We show reliable results using derived risk sensitivities for 20 EU countries with decent forward looking ability and propose potential stress-testing framework with an application for the Czech Republic.

The COVID-19 pandemic and sovereign credit risk

PurposeThe purpose of this study is to examine the effects of the coronavirus disease 2019 (COVID-19) pandemic on sovereign credit default swap (CDS) spreads using a large sample of countries.Design/methodology/approachIn this paper, the authors use a wide set of the sovereign CDS data of 78 countries. To measure the magnitude of the COVID-19 pandemic, the authors use the daily change of confirmed cases collected from Our World in Data. They use panel regressions to estimate the impact of the COVID-19 pandemic on sovereign credit risk.FindingsThe authors show how sovereign CDS spreads have widened significantly in response to the COVID-19 pandemic. Based on the most conservative estimate, a 1% increase in COVID-19 infections leads to a 0.17% increase in sovereign CDS spreads. Furthermore, this effect is stronger for developing countries and countries with worse healthcare systems. Government policies partially offset the impact of the COVID-19 pandemic, although these same policies also lead to widening sovereign CDS spreads. Sovereign CDS spreads narrow dramatically several months after the outbreak of the COVID-19 pandemic. Overall, the results suggest that the ongoing COVID-19 pandemic has been a massive shock to the global financial stability.Originality/valueThis paper provides new evidence that COVID-19 widens sovereign CDS spreads. The authors further show that this widening effect is felt most strongly in developing economies.

ECB's unconventional monetary policy and spillover effects between sovereign and bank credit risk

PurposeThe paper examines the impact of the deteriorating fiscal conditions of Eurozone countries on spillover effects on bank credit margins. It is investigated whether these effects have been reduced after European Central Bank’s (ECB) signaling of pursuing an expansionary, unconventional, monetary policy to address the debt crisis in Eurozone.Design/methodology/approachA general econometric panel model is applied to investigate spillover effects between Eurozone countries and bank credit margins. In total, three periods are examined: the period before the peak of the global financial crisis and the beginning of the Irish banking crisis, the period during the debt and bank crisis in Eurozone and the period after ECB's signaling of extremely aggressive monetary easing.FindingsAccording to empirical results, before the peak of the global financial crisis there was no substantial credit risk transfer from Eurozone sovereigns to banks. During the period of debt and bank crisis in Eurozone, the deterioration of the fiscal situation of Eurozone countries had a significant impact on bank Credit Default Swap (CDS) spreads. After ECB's signaling of extremely aggressive monetary easing, it does not seem to be any significant relationship between Eurozone sovereigns and bank CDS spreads. These findings reinforce the assessment that ECB's measures were effective, achieving the key objective of normalizing economic conditions and ensuring financial stability in Eurozone.Research limitations/implicationsA question is whether effects can change when the corresponding contraction will lead to a reinstatement of “normal” conditions. Would there be a reversal of risk premium trends in bond markets? Although the answer from casual observations seems to be negative, it is a valid research question to be examined. An interesting issue concerning the unconventional monetary policy measures implemented by ECB concerns the issues of moral hazard that they incorporate, something that could not be addressed. Another research perspective could be the use of the beta coefficient to measure the systematic and unsystematic risk of banking sector shares.Practical implicationsThe results have strong implications for ECB and European banking regulation. Regulators should mainly pay more attention to the amount and concentration of sovereign debt held by banks. Eurozone financial system could be less vulnerable to the sovereign credit risk. It raised the critical question of whether a more strict regulation is needed. Regulators should not intervene if not necessary, but they must prevent the transmission of crises between markets. This will likely bring trust to the developed countries' sovereign debt and the portfolios of the financial institutions, which hold most of this debt will be considered safe as well.Social implicationsThe conclusions provide a safe counterweight in various respects. First, the negative effects and the need to rapidly cease or limit such policies. Second, the financial stability aimed by ECB. Such policies contain the possibility of a subsequent moral hazard related to Member State and bank behavior. However, these contingencies need to be assessed with the benefits resulting from the restoration of financial markets and the disconnection between banking and sovereign credit risk. This leads Eurozone's financial system to become less vulnerable to the sovereign credit risk and therefore more safe, helping to restore confidence in the real economy.Originality/valueContribution in terms of methodology and conclusions. It offers important conclusions regarding the limitations of yields and volatility of CDS spreads. It examines the spillover effects of the fiscal situation of Eurozone countries on banking institutions by extending the existing methodology and introducing new questions focusing on the reaction of CDS market to the ECB monetary policy, the reduction of risk premiums at sovereign and banking level and the gradual reduction of interdependence between them.

Banks’ international assets and sovereign default risk

Purpose This paper aims to investigate the nexus between banks’ foreign assets and sovereign default risk in a panel of 15 developed economies. The empirical evidence suggests that banks’ foreign exposure is an important determinant of sovereign default probability. Design/methodology/approach Using data from the consolidated banking statistics (total foreign claims on ultimate risk basis) by the Bank of International Settlements, the author constructs a measure of bank international exposure to peer countries. This measure is then used as the target variable in a panel regression for sovereign credit default swaps. The model includes 15 European and non-European developed economies. Identification is discussed extensively in the paper. Findings Quantitatively, a 1% increase in banks’ cross-border claims increases sovereign default risk by about 0.19%. The relationship is weaker when banks are more capitalised. On the other hand, governments are more vulnerable to credit risk spillovers from banks’ international portfolios when having higher debt to GDP ratios. Originality/value To the best of the author’s knowledge, this is the first paper that attempts explicitly to establish an empirical connection between banks’ international assets and sovereign default risk. To the author’s opinion, this paper represents a contribution to our understanding of how sovereign credit risk spills over across countries. It also extends significantly the existing literature on the determinants of sovereign risk (that primarily focused on fundamentals, market characteristics – such as liquidity – and global factors). This paper ultimately sheds some new light on the role of intermediaries in the international transmission of credit risk, also adding to today’s discussion about the linkages between banks and sovereigns.