Institutional Environment and Sovereign Credit Ratings

We use a sample of 86 counties to examine the cross-sectional determinants of sovereign credit ratings. We find that the quality of a country's legal and political institutions plays a vital role in determining these ratings. A one-standard-deviation increase in our legal environment index results in an average credit rating increase of 0.466 standard deviations, even when we control for obvious factors such as GDP per capita, inflation, foreign debt per GDP, previous defaults, and general development. Although part of this effect is due to the legal environment's endogeneity, its relative importance is robust to endogeneity concerns.     

主权信用违约互换的运作及启示

欧洲各国主权债务危机的频发,使得主权CDS在全球范围内备受瞩目。本文分析了主权CDS的市场发展状况、运作及定价机制;考察欧洲主权债务危机中主权CDS的行为;提出对我国地方政府债务问题的启示。研究发现:(1)主权CDS息差变化受到了欧元区因素、本国因素、投机和代理对冲的影响;(2)短期主权CDS供不应求;(3)禁止主权CDS的裸卖空交易存在不合理性;(4)西欧主权风险外溢使得东欧及新兴市场国家的主权CDS市场波动加剧。     

国家主权信用评级质量检验方法研究

国家主权信用评级对当今国际经济和金融运行有着极为重要的影响力。但是,与其地位不相符的是,评级机构的评级结果事后多次被证明准确性和前瞻性较差。事先缺乏预警而事后大幅降级,甚至对加剧危机起到了推波助澜的作用。本文从国家主权信用评级质量的检验方法入手,系统分析了违约率和迁移率等传统方法在检验评级结果起到的作用及其不足,给出了检验评级质量的一般方法,并验证了该评级检验方法的科学性和准确性。     

The Real Effects of Credit Ratings: The Sovereign Ceiling Channel

We show that sovereign debt impairments can have a significant effect on financial markets and real economies through a credit ratings channel. Specifically, we find that firms reduce their investment and reliance on credit markets due to a rising cost of debt capital following a sovereign rating downgrade. We identify these effects by exploiting exogenous variation in corporate ratings due to rating agencies' sovereign ceiling policies, which require that firms' ratings remain at or below the sovereign rating of their country of domicile.     

Sovereign Default,Domestic Banks,and Financial Institutions

We present a model of sovereign debt in which, contrary to conventional wisdom, government defaults are costly because they destroy the balance sheets of domestic banks. In our model, better financial institutions allow banks to be more leveraged, thereby making them more vulnerable to sovereign defaults. Our predictions: government defaults should lead to declines in private credit, and these declines should be larger in countries where financial institutions are more developed and banks hold more government bonds. In these same countries, government defaults should be less likely. Using a large panel of countries, we find evidence consistent with these predictions.     

Local Currency Sovereign Risk

We introduce a new measure of emerging market sovereign credit risk: the local currency credit spread, defined as the spread of local currency bonds over the synthetic local currency risk‐free rate constructed using cross‐currency swaps. We find that local currency credit spreads are positive and sizable. Compared with credit spreads on foreign‐currency‐denominated debt, local currency credit spreads have lower means, lower cross‐country correlations, and lower sensitivity to global risk factors. We discuss several major sources of credit spread differentials, including positively correlated credit and currency risk, selective default, capital controls, and various financial market frictions.     

Crises, Cronyism, and Credit

This paper examines the effects of several potential explanatory factors related to the 1997–1998 East Asian crisis. We find that a crisis can improve a poorly functioning credit system by making domestic lending rates more responsive to market-based returns. We report that the responsiveness of short-term lending rates is directly related to the level of transparency in the economy. Thus, countries with greater transparency (less corruption) are more likely to make credit decisions based on market-wide forces rather than succumb to the influence of special interest groups. Nations with greater transparency also experience significantly shorter and less severe economic downturns.     

Monitoring and Forecasting Currency Crises

Can we improve forecasts of currency crises by using a large number of predictors? Which predictors should we use? This paper evaluates the performance of traditional leading indicators and a new Diffusion Index (DI) method as Early Warning Systems to monitor the risk and forecast the likelihood of the recent currency crises in East Asia. We find that the DI performs quite well in real time. For most countries, the forecasted probabilities of a crisis increase substantially around the actual time of the crisis. The economic variables that help in forecasting future crises are output growth, interest rates and money growth.     

The Impact of Sovereign Credit Ratings on Corporations: A Literature Review and Research Recommendations

During the financial crisis, sovereign ratings have come under increased public scrutiny due to their strong impact on sovereign borrowing costs and hence financial stability of countries. However, their influence on corporations within and outside the respective nations has so far attracted only limited attention, although several academics have provided intriguing insights in this regard. In order to obtain a structured overview of this relatively young strand of research, this paper reviews key insights and conclusions that the extant literature offers on the role of sovereign creditworthiness for corporations. Herein, it focuses on the effects that have been observed for the corporate business environment, access to capital, and foreign investment activities. Different research issues providing fertile ground for future studies are identified.     

Securitization,Ratings, and Credit Supply

We develop a framework to explore the effect of credit ratings on loan origination. We show that ratings endogenously shift the economy from a signaling equilibrium, in which banks inefficiently retain loans to signal quality, toward an originate-to-distribute equilibrium with zero retention and inefficiently low lending standards. Ratings increase overall efficiency, provided that the reduction in costly retention more than compensates for the origination of some negative net present value loans. We study how banks' ability to screen loans affects these predictions and use the model to analyze commonly proposed policies such as mandatory “skin in the game.”     

The Information Content of Ratings: An Analysis of Australian Credit Default Swap Spreads

We examine the information content of Australian credit rating announcements by measuring the abnormal changes in credit default swap (CDS) spreads. CDS spreads provide a direct view of credit quality and thus should impound information quickly when investors receive new credit risk related information via a rating event. Using an event study methodology, we show that watch downs and rating upgrades contain valuable information even after controlling for sources of contamination. We find that watch downs elicit statistically significant market reactions, while subsequent downgrades are anticipated. Upgrades are associated with a significant but small abnormal reduction in CDS spreads, whereas watch ups appear to contain no new information.     

Credit Reallocation,Deleveraging, and Financial Crises

This paper studies how the process of reallocation of credit across firms behaves before and after financial crises. Applying the methodology typically used for measuring job reallocation, we track credit reallocation across Korean firms for over three decades (1980–2012). The credit boom preceding the 1997 crisis featured a slowdown of credit reallocation. After the crisis and the associated reforms, the creditless recovery (deleveraging) masked a dramatic intensification and increased procyclicality of credit reallocation. The findings suggest that the intensification of reallocation was efficiency‐enhancing.     

Do Sovereign Re‐Ratings Destabilize Equity Markets during Financial Crises? New Evidence from Higher Return Moments

This study investigates the effects of S&P's sovereign re‐ratings on the higher moments of equity market returns over recent financial crises. Using a set of intraday stock market index prices and sovereign credit ratings for a sample of 36 countries that experienced sovereign rating changes over the period from 1996 to 2013, we find that the higher moments of stock market returns are significantly more responsive to sovereign re‐ratings during financial crises, but the effects on stock markets are not the same across different financial crises. The effects during crises are, however, magnified for large downgrades and those that are associated with a loss of investment grade status. We find that there are asymmetric effects during financial crises in that downgrades are consistently more significant than upgrades in increasing realized volatility and realized kurtosis. Both upgrades and downgrades affect realized skewness in times of crises in the expected direction.     

Effect of the Sovereign Credit Ratings in East Asia Countries: Evidence from Panel Vector Autoregression

We study the effect of the sovereign credit ratings on the economies of seven East Asian countries, applying panel vector autoregression (VAR). We find that rating has less effect than outlook of rating on the credit default swap (CDS) spreads, the stock indexes, and the GDP growth rates. Rating upgrade and positive outlook have stronger effects than rating downgrade and negative outlook, and the effects of positive outlook and rating are greater after the financial crisis. There is evidence of contagion in that the economic variables of a country seem to have been affected by the outlooks of the other countries.     

英国主权债务危机及启示

从上世纪80年代的拉美债务危机、90年代的东南亚金融危机直到最近爆发的欧洲主权债务危机,都充分说明了合理的政府债务规模和风险管理策略,对于政府积极面对金融危机的冲击、促进金融市场及汇率的稳定以及经济的快速复苏至关重要。宏观政策的制订必须从动态的、长远的视角去权衡审慎考虑,在实行宽松的货     

希腊债务危机:基于金融互换视角的分析

近期的欧洲可谓是一波未平一波又起,次贷危机所导致的衰退潮尚未退去,希腊的债务危机又在整个欧洲上空蒙上一层阴霾。而随着葡萄牙、西班牙、意大利等国也纷纷陷入债务危机这一旋涡,可以说,欧盟甚至整个欧洲,正在经受新一轮的挑战。冰冻三尺非一日之寒,希腊债务危机的爆发,有其深刻的历史原因。不合理的高福利体系令经济基础本来就比较薄弱的希腊政府     

金融双语信用违约互换

Credit default swaps can be thought of as an insurance against the default of some underlying instrument1, or as a put option on the underlying instrument. In a typical credit default swap, as shown in figure, the party selling the credit risk (or the "protection buyer") makes periodic payments to the "protection seller" of a negotiated number of basis points , times the notional amount of the underlying bond or loan.     

Fiscal Transparency,Fiscal Performance and Credit Ratings

Fiscal transparency can provide policymakers with incentives to adopt better policies by enhancing the public debate on the design and sustainability of fiscal policy and establishing accountability for their implementation. Fiscal transparency can also reduce uncertainty about fiscal policy and fiscal outturns by providing more information on the underlying fiscal position and fiscal risks. Both effects suggest that countries should benefit from adopting transparency enhancing policies through better market assessments of their sovereign risk. In this paper, we investigate whether fiscal transparency has an effect on market perceptions of sovereign risk, as measured by sovereign credit ratings, and if so, through which channels. We find that fiscal transparency has a positive and significant effect on ratings – one standard deviation increase in fiscal transparency increases credit ratings by 0.7 and 1 notches (or steps in the credit rating scale) in advanced and developing economies, respectively – but its effect works through different channels in advanced and developing economies. In advanced economies, fiscal transparency is associated with better fiscal outcomes, leading indirectly to higher credit ratings. In developing economies, the direct uncertainty‐reducing effect of fiscal transparency seems to be more important. Indeed, the effect of fiscal transparency on fiscal performance is found to increase with the level of institutional development.