中国公司债券利差影响因素研究--基于评级信息的分析

本文以信用利差分解理论为基础,结合债券评级信息,基于市场实际数据实证研究了中国公司债券市场信用利差的决定因素。结果表明,预期违约损失在税后信用利差中只占很小的比例,无风险利率的期限结构、流动性风险因子、宏观经济指标等因子都对信用利差有较显著的解释力。     

Yield spreads on EMU government bonds — How the financial crisis has helped investors to rediscover risk

This study analyses the determinants of EMU member states’ government bond yield spreads from January 2000 until September 2010. Using a dynamic panel regression approach, the authors show that before the outbreak of the financial crisis investors generally ignored fundamental sovereign bond risk factors. However, with the beginning of the financial crisis yield spreads for many member countries escalated. The results indicate not only that investors began to re-evaluate countries’ credit risks (measured by projections of debt-to-GDP ratios), but also that risk aversion in the markets, which increased significantly during the crisis, became a major determinant of sovereign bond spreads.     

Does governing law affect bond spreads?

Controlling for bond and issuer characteristics, bond spreads are expected to be equal across different legal jurisdictions, and differences are expected to disappear through arbitrage. However, an analysis of 490 U.S. dollar–denominated bonds issued by 53 emerging market sovereigns during 1990–2015 reveals that after the financial crisis of 2008, launch spreads of sovereign bonds issued under U.K. law have been higher than those issued under U.S. law, by 130 basis points for BB+ bonds and 175 basis points for B− bonds. This effect was not significant for investment grade bonds. On average, bonds issued under U.K. law had weaker ratings and shorter tenors post-crisis. The post-crisis impact of governing law on sovereign bond spreads is not explained by collective action clauses, or first-time bond issuances. Instead, the difference seems to be related to the perception that U.S. law offers stronger investor protection, and that the investor base for bonds issued under U.S. law is larger than that for bonds issued under U.K. law. The difference in spreads persists in the secondary market even after 180 days, perhaps because of the lack of liquidity, as investors tend to buy and hold these more attractive bonds on a longer-term basis.     

Information Economics of Asian Bond Markets: A Comparative Analysis of Credit Agencies

ABSTRACT

This paper examines financial data and credit ratings of corporate bond issuers in East Asia. The empirical results suggest that the U.S.-based credit agency principally monitors issuers' creditworthiness as a determinant of corporate bond ratings. In contrast, local agencies focus on profitability and firm size. We consider that the similarities and differences in determinants originate from the following: (1) the business experience of agencies; and (2) the degree of development of each individual market.     

The effect of oil price shocks on asset markets: Evidence from oil inventory news

We quantify the reaction of U.S. equity, bond futures, and exchange rate returns to oil price shocks driven by oil inventory news. Across most sectors, equity prices decrease in response to higher oil prices before the 2007/2008 crisis but increase after it. Positive oil price shocks cause a depreciation of the U.S. dollar against a broad range of currencies but have only a modest effect on bond futures returns. The evidence suggests that changes in risk premia help to explain the time-varying effect of oil price shocks on U.S. equity returns.     

Institutional quality and sovereign credit default swap spreads

We examine how the quality of political, legal, and regulatory institutions impacts sovereign risk premia. An improvement in institutional quality significantly lowers a country's sovereign credit default swap (CDS) spread, even after controlling for domestic and global macroeconomic factors. The incremental effect of institutional quality may also be economically important in explaining the variations in the level of sovereign CDS spreads. The basic results are robust to alternative model specifications, samples, control variables, measures of institutional quality, estimation methods, and controls for endogeneity. Overall, the evidence suggests that institutional quality may play a significant role in explaining sovereign CDS spreads.     

Identifying risks in emerging market sovereign and corporate bond spreads

This paper investigates the systematic risk factors driving emerging market (EM) credit risk by jointly modeling sovereign and corporate credit spreads at a global level. We use a multi-regional Bayesian panel VAR model, with time-varying betas and multivariate stochastic volatility. This model allows us to decompose credit spreads and build indicators of EM risks. A key result is that indices of EM sovereign and corporate credit spreads differ because of their specific reactions to global risks (risk aversion, liquidity and US corporate risk). For example, following Lehman's default, EM sovereign spreads ‘decoupled’ from the US corporate market, whereas EM corporates ‘recoupled.’     

Real earnings management and the cost of new corporate bonds

We examine the association between real earnings management and the cost of new bond issues of U.S. corporations. We consider three types of real earnings management: sales manipulation, overproduction, and the abnormal reduction of discretionary expenditures. We find that overproduction impairs credit ratings and that sales manipulation and overproduction are associated with higher bond yield spreads. Overall, our results imply that credit rating agencies and bondholders perceive real earnings management as a credit risk-increasing factor and thus require high risk premiums.     

Vehicle currency use in international trade

We explore the major driving forces for currency invoicing in international trade with a simple model and a novel dataset covering 24 countries. We contrasts a “coalescing” effect, where exporters minimize the movements of their prices relative to their competitors', with incentives to hedge macroeconomic volatility and transaction costs. The key determinants of invoice currency choice are industry features and country size, with some role for foreign-exchange bid–ask spreads. The coalescing effect also goes a long way to explaining the well-known dominance of the dollar. Trade flows to the United States are predominantly invoiced in dollar, as foreign exporters face competition with U.S. firms. The use of the dollar in trade flows that do not involve the United States reflects trade in homogeneous products where firms need to keep their price in line with their competitors'.     

Counter‐Credit‐Risk Yield Spreads: A Puzzle in China's Corporate Bond Market

In this paper, using China's risk‐free and corporate zero yields together with aggregate credit risk measures and various control variables from 2006 to 2013, we document a puzzle of counter‐credit‐risk corporate yield spreads. We interpret this puzzle as a symptom of the immaturity of China's credit bond market, which reveals a distorted pricing mechanism latent in the fundamental of this market. We also find interesting results about relationships between corporate yield spreads and interest rates and risk premia and the stock index, and these results are somewhat attributed to this puzzle.     

The cyclical behavior of household and corporate credit in emerging economies

Standard consumption-investment theory predicts counter-cyclical (pro-cyclical) behavior of household (corporate) credit whereby households' consumption smoothing and firms' investment motives are aligned. Counter to the theoretical symbiosis consistent with U.S. data, we demonstrate not only in South Korea, but also in 19 emerging economies that the pro-cyclical behavior of household credit dominates that of corporate credit. Our analysis further reveals that dominant, pro-cyclical household credit accompanied by (collateral) assets and fueled by external debt generates counter-cyclical behavior in interest rates, amplifies credit market fluctuation, and hinders the growth of small- and medium-size businesses in the South Korean economy.     

Rating standards around the world: A puzzle?

Using panel data on S&P's credit ratings for firms from 63 countries over the 2000–2016 period, we uncover divergent patterns in the rating standards over time. Standards strengthen by 1.5 notches for U.S. firms and by 2.2 notches for other developed country firms, but weaken by 1.2 notches for emerging country firms. Default and credit spread tests show that standards tightening for U.S. and other developed country firms is likely unwarranted, whereas standards loosening for firms in emerging economies appears to be justified. This novel and puzzling evidence suggests that S&P does not adopt consistent global standards over time.     

Sovereign default and debt renegotiation

This paper develops a small open economy model to study sovereign default and debt renegotiation for emerging economies. The model features both endogenous default and endogenous debt recovery rates. Sovereign bonds are priced to compensate creditors for the risk of default and the risk of debt restructuring. The model captures the interaction between sovereign default and ex post debt renegotiation. We find that both debt recovery rates and sovereign bond prices decrease with the level of debt. In a quantitative analysis, the model accounts for the debt reduction, volatile and countercyclical bond spreads, countercyclical trade balance, and other empirical regularities of the Argentine economy. The model also replicates the dynamics of bond spreads during the debt crisis in Argentina.     

MODELING SOVEREIGN RISKS: FROM A HYBRID MODEL TO THE GENERALIZED DENSITY APPROACH

Motivated by the European sovereign debt crisis, we propose a hybrid sovereign default model that combines an accessible part taking into account the evolution of the sovereign solvency and the impact of critical political events, and a totally inaccessible part for the idiosyncratic credit risk. We obtain closed‐form formulas for the probability that the default occurs at critical political dates in a Markovian setting. Moreover, we introduce a generalized density framework for the hybrid default time and deduce the compensator process of default. Finally, we apply the hybrid model and the generalized density to the valuation of sovereign bonds and explain the significant jumps in long‐term government bond yields during the sovereign crisis.     

The role of country-specific fundamentals in sovereign CDS spreads: Eastern European experiences

We investigate the determinants of sovereign CDS spreads on a sample of Eastern European data. A dynamic hierarchical factor model is used to aggregate information in indicators of economic fundamentals. CDS spreads are regressed on forecasts of factors. We find that domestic fundamentals explain more of CDS spread variance than global factors, largely due to their ability to explain differences in sovereign risk across countries. The effects on CDS spreads are found to be time-varying. In terms of economic significance, the factor of institutional-political strength stands out. We apply the model to study CDS spreads of Poland, Russia and Turkey.     

Impact of wage rigidity on sovereign credit rating

Sovereign credit rating is a condensed assessment of a country's ability to repay its public debt in a timely fashion. Downward wage rigidity has been considered as a critical determinant of various macroeconomic and financial phenomena. This study examines the effect of a country's wage rigidity on its sovereign credit rating after measuring downward wage rigidities based on a regime-switching model. The results indicate that greater wage rigidity induces lower sovereign credit rating. We find that wage rigidity amplifies cash flow fluctuations and magnified cash flow volatility negatively affects sovereign credit rating.     

Accounting for sovereign tail risk in emerging economies: The role of global and domestic risk factors

This paper evaluates the role of global and domestic risk factors in explaining sovereign tail risk for 18 emerging economies. Sovereign tail risk is defined as the likelihood of a sharp rise in sovereign credit risk. We find that both global and domestic risk factors contribute significantly to sovereign tail risk, with explanatory power increasing with the severity of tail risk in a non-linear fashion. Indeed, their contributions have become stronger following the global financial crisis. In particular, global liquidity conditions, commodity prices and economic growth are ranked as the major risk factors for sovereign tail risk among the EMEs.     

Mexico's integration into the North American capital market

We explore a model of time varying regional market integration that includes three factors for the North American equity market, the local Mexican equity market and the peso/dollar exchange rate. We argue that a useful instrument for the degree of integration is the sovereign yield spread. Applying our methodology to Mexico over the 1991–2002 period, we show that the degree of market integration was higher at the end of the period than at the beginning but that it exhibited wide swings that were related to both global as well as local events. We also discover that Mexico's currency risk is priced. Further, the currency returns process reveals strongly significant asymmetric volatility that is strongly related to the asymmetric volatility of the Mexican equity market returns process. A plausible reason for these results is that currency devaluations in emerging markets like Mexico can cause default-risk crises in local banking systems that mismatch local-currency assets and hard currency liabilities, whereas appreciations produce no such problems. Devaluations that destabilize banking systems are, therefore, more likely than appreciations to increase the volatilities of both the currency's and the equity market's returns.     

Sovereign credit ratings,capital flows and financial sector development in emerging markets

How does the sovereign credit ratings history provided by independent ratings agencies affect domestic financial sector development and international capital inflows to emerging countries? We address this question utilizing a comprehensive dataset of sovereign credit ratings from Standard and Poor's from 1995–2003 for a cross-section of 51 emerging markets. Within a panel data estimation framework, we examine financial sector development and the influence of sovereign credit ratings provision, controlling for various economic and corporate governance factors identified in the financial development literature. We find strong evidence that our sovereign credit rating measures do affect financial intermediary sector developments and capital flows. We find that i) long-term foreign currency sovereign credit ratings are important for encouraging financial intermediary development and for attracting capital flows. ii) Long-term local currency ratings stimulate domestic market growth but discourage international capital flows. iii) Short-term ratings (both foreign and local currency denominated) retard all forms of financial developments and capital flows. There are important implications in this research for policy makers to encourage the provision of longer-term credit ratings to promote financial development in emerging economies.     

Small business loan securitization and interstate risk sharing

Do credit risk transfers in general, and loan sales and securitizations in particular, by financial institutions enhance credit availability and financial stability? Or do they allow assets of poor credit quality to spread to unprotected investors, and thus create financial crises and destroy values? In this paper, we contribute to the continuing debate by examining the effect of small business loan securitizations on interstate personal income insurance. Using data of U.S. banks for the period 1995–2008, we find that small business loans securitizations contribute to the smoothening of state personal income volatility, and that this contribution is stronger in states where small businesses play a more important role in the local economy.