Differences of opinion in sovereign credit signals during the European crisis

Motivated by the European debt crisis and the new European Union regulatory regime for the credit rating industry, we analyse differences of opinion in sovereign credit signals and their influence on European stock markets. Rating disagreements have a significant connection with subsequent negative credit actions by each agency. However, links among Moody’s/Fitch actions and their rating disagreements with other agencies have weakened in the post-regulation period. We also find that only S&P’s negative credit signals affect the own-country stock market and spill over to other European markets, but this is concentrated in the pre-regulation period. Stronger stock market reactions occur when S&P has already assigned a lower rating than Moody’s/Fitch prior to taking a further negative action.     

An asymmetric dynamic conditional correlation analysis of linkages of European financial institutions during the Greek sovereign debt crisis

This article employs the asymmetric dynamic conditional correlation (DCC) model to assess impacts of the recent sovereign debt crisis on the time-varying correlations of five European financial institutions holding large amounts of Greek sovereign bonds (National Bank of Greece, BNP Paribas, Dexia, Generali, and Commerzbank). Contrary to the results of preceding studies, we find significant increases in the correlations between several combinations of the financial institutions’ stock returns after the inception of the sovereign debt crisis, indicating contagion effects. Moreover, our findings show that the parameter of the standardized negative residuals is statistically significant in the case of DCC estimates between two specific institutions. This suggests that the conditional correlation of stock returns between the two institutions is more significantly influenced by negative shocks than by positive innovations to return.     

欧洲主权债务危机的发展与应对之策

受近期希腊债务违约风险上升、欧债危机向核心国蔓延、欧洲银行业融资缺口扩大等负面因素冲击,欧洲金融市场遭遇大幅动荡。文章指出,在短期内,防止希腊债务违约是遏制欧债危机进一步蔓延、防范债务危机与银行危机并发的关键;长期而言,欧元及欧盟运作机制的改革将不可避免,完善退出机制将是欧元区长期稳定运作的基石。     

欧洲主权债务危机给我国商业银行带来的机遇与挑战

本文对以希腊主权债务问题为代表的新一轮欧洲主权债务危机进行了专题研究,辩证地分析了危机给我国商业银行发展带来的挑战与机遇,并对下一步应采取的措施与转变等提出了相应的政策性建议。     

关于欧洲主权债务问题与欧元区域制度改革的思考

近来,希腊、葡萄牙、西班牙和爱尔兰等多个欧元区国家均面临主权债务违约风险。这一问题的发生,既有希腊等国自身财政管理的原因,也反映出欧元区体制中存在的一系列长期性、结构性和制度性问题。如果不能妥善解决欧元区国家的主权债务问题,不仅将拖累欧元区经济发展,也会对世界经济金融复苏造成冲击。欧洲主权债务问题的出现,对我国财政预算管理也有一定警示作用。     

Self-fulfilling dynamics: The interactions of sovereign spreads,sovereign ratings and bank ratings during the euro financial crisis

During the euro-area financial crisis, interactions among sovereign spreads, sovereign credit ratings, and bank credit ratings appeared to have been characterized by self-generating feedback loops. To investigate the existence of feedback loops, we consider a panel of five euro-area stressed countries within a three-equation simultaneous system in which sovereign spreads, sovereign ratings and bank ratings are endogenous. We estimate the system using two approaches. First we apply GMM estimation, which allows us to calculate persistence and multiplier effects. Second, we apply a new, system time-varying-parameter technique that provides bias-free estimates. Our results show that sovereign ratings, sovereign spreads, and bank ratings strongly interacted with each other during the euro crisis, confirming strong doom-loop effects.     

欧债危机的根源、前景与影响

欧债危机自2009年爆发以来,欧盟已采取了一系列措施,但欧债危机仍愈演愈烈。文章从债务问题国家自身经济结构性因素与欧元区制度性因素等方面分析了欧债危机产生的根源,指出欧债危机可能促使欧洲走向更为紧密的财政和政治联盟。针对欧债危机对我国经济的影响,我国应继续坚持经济结构调整政策,制定并积极实施金融业长期改革战略,不断提高金融服务于实体经济的能力。     

The systemic risk of European banks during the financial and sovereign debt crises

European banks became a source of risk to global financial markets during the financial crisis and attention to the European banking sector increased during the sovereign debt crisis. To measure the systemic risk of European banks, we calculate a distress insurance premium (DIP), which integrates the characteristics of bank size, probability of default, and correlation. Based on this measure, the systemic risk of European banks reached its height in late 2011 around €500 billion. We find that this was largely due to sovereign default risk. The DIP methodology is also used to measure the systemic contribution of individual banks. This approach identifies the large systemically important European banks, but Italian and Spanish banks as a group notably increased in systemic importance during the sample period. Bank-specific fundamentals like capital-asset ratios predict the one-year-ahead systemic risk contributions.     

The impact of the sovereign debt crisis on the activity of Italian banks

We examine the implications of the sovereign debt tensions on the Italian credit market by estimating the effect of the 10-year BTP-Bund spread on a wide array of bank interest rates, categories of loans and income statement variables. We exploit the heterogeneity between large and small intermediaries to assess to what extent the transmission of sovereign risk differed in relation with different banks’ balance-sheet characteristics and business strategies. Regarding the cost of funding, we find that changes in the BTP-Bund spread have a sizeable effect on the interest rates on term deposits and newly issued bonds but virtually no effect on overnight deposits. Furthermore, the sovereign spread significantly affects the cost of credit for firms and households and exerts a negative effect on loan growth. All these results are magnified when considering alone the five largest banks, which are typically less capitalized, have a larger funding gap and incidence of bad loans and rely more on non-traditional banking activities. Sovereign tensions also affect the main items of banks’ income statement.     

希腊主权债务危机的成因与影响

日益严重的希腊主权债务危机将希腊推向了欧元区主权债务问题的风口浪尖,由此也形成了影响欧元区稳定运行的严峻挑战。该文基于国际金融危机对希腊经济与财政运行状况的影响,分析了引起希腊主权债务危机的成因及解决途径,指出解决希腊主权债务危机除了希腊自身的努力外,依然需要国际社会尤其是欧盟的援助。从全球的角度看,其他经济体的主权债务问题也同样值得警惕和重视。     

CDOs and the financial crisis: Credit ratings and fair premia

We study risk and return characteristics of CDOs using the market standard models. We find that fair spreads on CDO tranches are much higher than fair spreads on similarly-rated corporate bonds. Our results imply that credit ratings are not sufficient for pricing, which is surprising given their central role in structured finance markets. This illustrates limitations of the rating methodologies that are solely based on real-world default probabilities or expected losses and do not capture risk premia. We also demonstrate that CDO tranches have large exposure to systematic risk and thus their ratings and prices are likely to decline substantially when credit conditions deteriorate.     

西班牙债务危机治理对于结构性改革的启示

文章剖析了西班牙主权债务危机的演变逻辑与救助改革举措所带来的启示。从其演变逻辑看,西班牙债务危机经历了房地产泡沫一银行业危机一主权债务信用危机的传导过程。文章回顾了西班牙政府采取的系列结构性改革举措,指出要将房地产泡沫作为经济偏离均衡的重要预警信号,警惕房地产泡沫通过地方政府债务向银行业信贷的风险传递,通过切实转变经济发展方式、协调产业发展层次来提高经济发展的质量。     

加强市场基础建设 提高风险预警能力——希腊主权债务危机的反思

近来,希腊债务危机成为全球经济舆论的焦点。文章指出,希腊债务危机是希腊经济自身缺陷、主权债务信息披露不完善、欧元区体制弊端等问题的集中体现。借鉴希腊债务危机的教训,我们应进一步强化信息披露对金融市场发展基础性作用的认识,通过发展直接融资促进地方政府融资的显性化,并尽快建立和完善我国金融市场的风险监控、预警和处理机制。     

欧洲主权债务危机的根源与出路

欧洲主权债务危机是主权问题与银行问题相互作用的结果,其根源在于欧洲银行体系和政治结构的特殊性。要化解主权债务危机需要实现财政政策的一体化和银行监管的一体化,同时进一步推动欧盟和欧元区改革。     

Quantitative easing and credit rating agencies

This paper investigates the behaviour of credit rating agencies (CRAs) using a natural experiment in monetary policy. We exploit the corporate QE of the Eurosystem and its rating-based specific design which generates exogenous variation in the probability for a bond of becoming eligible for outright purchases. We show that after the launch of the policy, rating activity was concentrated precisely on the territory where the incentives of market participants are expected to be more sensitive to the policy design. Our findings contribute to better assessing the consequences of the explicit reliance on CRAs ratings by central banks when designing monetary policy.     

Modelling correlation dynamics of EMU sovereign debt markets during the recent turmoil

The purpose of the present study is to explicitly model the correlation dynamics of Eurozone sovereign debt markets. Our analysis runs from 2000 through 2014. Time varying correlations are derived from a dynamic conditional correlation GARCH model (t-cDCC model). We document substantial variability in correlations that is time and region-dependent. Evidence suggests that the Lehman collapse coupled with the German banks’ bailout programme and the events that followed have undermined sovereign debt integration. Moreover, sensitivity analysis provides useful insights that global and regional risk factors play pivotal role in explaining correlation structure both before and after the onset of the Eurozone sovereign debt crisis. We believe that our results entail important implications for market authorities, international fixed income portfolio diversification and asset allocation.     

The relative contributions of equity and subordinated debt signals as predictors of bank distress during the financial crisis

Bank supervisors utilize early warning signals to predict which banks are likely to become distressed. Previous research has found that market discipline signals do not significantly improve out-of-sample forecasts relative to accounting-based signals. Most of that evidence, however, comes from periods in the 1990s when the U.S. economy and banking system were healthy, potentially neutralizing an advantage of market signals to incorporate new information quickly. For the period between the fourth quarters of 2006 and 2012, we assess the accuracy of two market signals – expected default frequency (EDF) and subordinated note and debenture (SND) yield spreads – relative to accounting-based signals in forecasting which publicly traded BHCs would become distressed. In 2008, EDF signals were relatively more accurate, but they did not lead to economically significant reductions in missed distress events relative to other signals. Supervisors would have been better off devoting slack resources to monitor BHCs with high commercial real estate concentrations. As the crisis subsided, a failure probability model developed from bank failures in the 1980s and early 1990s was consistently the most accurate signal. For the two dozen BHCs with actively traded SNDs, yield spreads over Treasuries were extremely poor predictors of distress because the spreads were distorted by too-big-to-fail subsidies. The Tier 1 leverage ratio was the most accurate distress signal for these large BHCs. In sum, the evidence to justify systematic reliance on market signals by supervisory agencies to forecast bank distress remains weak.     

Bank use of sovereign CDS in the Eurozone crisis: Hedging and risk incentives

Using a comprehensive dataset from German banks, we document the usage of sovereign credit default swaps (CDS) during the European sovereign debt crisis of 2008–2013. Banks used the sovereign CDS market to extend, rather than hedge, their long exposures to sovereign risk during this period. Lower loan exposure to sovereign risk is associated with greater protection selling in CDS, the effect being weaker when sovereign risk is high. Bank and country risk variables are mostly not associated with protection selling. The findings are driven by the actions of a few non-dealer banks which sold CDS protection aggressively at the onset of the crisis, but started covering their positions at its height while simultaneously shifting their assets towards sovereign bonds and loans. Our findings underscore the importance of accounting for derivatives exposure in building a complete picture and understanding fully the economic drivers of the bank-sovereign nexus of risk.     

Sovereign asset values and implications for the credit market

Using the contingent claim approach and market data on sovereign credit default swaps we assess the drivers of a country's risk perception. Deriving market-based asset values for a set of advanced economies we gain insights into the capital markets' perspectives on sovereign creditworthiness. We find the market-based asset values to be positively influenced by debt and to be an early risk indicator for economic developments. In a cross-section analysis we identify drivers of the economic risk of countries. Clustering the countries according to their debt to asset value ratios provides further insights into the market perceptions of sovereign credit risk. For example we find that the asset values of countries with higher ratios react to changes in the global equity market. Countries with a lower ratio react more to the political stability within the country.     

Investor information and bank instability during the European debt crisis

Outside of financial crises, investors have little incentive to produce private information on banks’ short-term liabilities held as information-insensitive safe assets. The same does not hold during crises. We compare the information effects of different policy interventions. We measure information production using credit default swap spreads during the Global Financial Crisis and the European debt crisis. We study abnormal information production around major events and find that capital injections reduced abnormal information production while early European stress tests increased it. High levels of information production predict bank balance sheet contraction and higher government expenditures to support financial institutions.