Modeling the business risk of financially weakened firms: A new approach for corporate bond pricing

Most structural models of default risk assume that the firm's asset return is normally distributed, with a constant volatility. By contrast, this article details the properties that the process of assets should have in the case of financially weakened firms. It points out that jump-diffusion processes with time-varying volatility provide a refined and accurate perspective on the business risk dimension of default risk. Representative Arrow-Debreu state price densities (SPD) and term structures of credit spreads are then explored. The credit curves show that the business uncertainties play a major in the pricing of corporate liabilities.     

Dispersion in news sentiment and corporate bond returns

We construct a news sentiment index at the firm level by using textual analysis of news articles and find that dispersion in news sentiment is a significant predictor of corporate bond returns. Bonds of firms with high dispersion in news sentiment have a highly significant average return of 7.38 percent. A portfolio that longs bonds with high dispersion in news sentiments and shorts bonds with low dispersion earns an average biweekly return of 8.53 percent. This finding is in line with an argument that dispersion in news sentiment is a proxy for future cash flow uncertainty.     

Exploring the components of credit risk in credit default swaps

In this paper, we test the influence of various fundamental variables on the pricing of credit default swaps. The theoretical determinants that are important for pricing credit default swaps include the risk-free rate, industry sector, credit rating, and liquidity factors. We suggest a linear regression model containing these different variables, especially focusing on liquidity factors. Unlike bond spreads which have been shown to be inversely related to liquidity (i.e., the greater the liquidity, the lower the spread), there is no a priori reason that the credit default swap spread should exhibit the same relationship. This is due to the economic characteristics of a credit default swap compared to a bond. Our empirical result shows that all the fundamental variables investigated have a significant effect on the credit default swap spread. Moreover, our findings suggest that credit default swaps that trade with greater liquidity have a wider credit default swap spread.     

An agent-based model of corporate bond trading

We construct an heterogeneous agent-based model of the corporate bond market and calibrate it against US data. The model includes the interactions between a market maker, three types of fund, and cash investors. In general, the sensitivity of the market maker to demand and the degree to which momentum traders are active strongly influence the over- and under-shooting of yields in response to shocks, while investor behaviour plays a comparatively smaller role. Using the model, we simulate experiments of relevance to two topical issues in this market. Firstly, we show that measures to reduce the speed with which investors can redeem investments can reduce the extent of yield dislocation. Secondly, we find the unexpected result that a larger fraction of funds using passive investment strategies increases the tail risk of large yield dislocations after shocks.     

韩国公司债市场及其对我国的启示

韩国早期的金融环境与我国相比有一些相似之处。该文分析了韩国公司债市场的发展历程和当前的现状，并结合我国实际为我国公司债券市场发展提出了相关建议。     

Credit ratings and IPO pricing

We examine the effects of credit ratings on IPO pricing. The evidence from U.S. common share IPOs during 1986–2004 shows that when firms go public, those with credit ratings are underpriced significantly less than firms without credit ratings. Credit rating levels, however, do not have a significant effect on IPO underpricing. The existence of credit rating reduces uncertainty about firm value. It is the value certainty that matters, not the value per se. Credit ratings also reduce the degree of price revision during the bookbuilding process and the aftermarket volatility in the post-IPO period. The evidence suggests that credit ratings convey useful information in reducing value uncertainty of the issuing firms as well as information asymmetry in the IPO markets.     

Leverage, options liabilities, and corporate bond pricing

The two major problems with typical structural models are the failure to attain a positive credit spread in the very short term, and overestimation of the overall level of the credit spread. We recognize the presence of option liabilities in a firm’s capital structure and the effect they have on the firm’s credit spread. Including option liabilities and employing a regime switching interest rate process to capture the business cycle resolves the above-mentioned drawbacks in explaining credit spreads. We find that the credit spread overestimation problem in one of the structural models, Collin-Dufresne and Goldstein (J Finan 56:1929–1957, 2001), can be resolved by combining option liabilities and the regime-switching interest rate process when dealing with an investment grade bond, whereas with junk bonds, only the regime-switching interest rate process is needed. We also examine vulnerable option values, debt values, and zero-coupon bond values with different model settings and leverage ratios.      

Confucian culture and the external pay gap

We examine the impact of Confucian philosophy on external pay gaps, and find that a Confucianist atmosphere is negatively associated with firms’ external pay gaps for both executives and employees. Mechanistically, the Confucian concept of “righteousness” reduces the self-interested motivation of management, in turn reducing executives’ external pay gap; “humaneness” causes management to focus on protecting employees’ rights and interests, benefiting employees’ compensation; and “honesty” improves information disclosure, reducing the external compensation gap for both executives and general employees. The inhibitory effect of Confucian culture on the external pay gap is greater in regions with weak formal institutions and non-state-owned firms, while foreign cultural shocks attenuate the Confucian influence. Finally, the Confucian culture-driven reduction of the external pay gap improves enterprises’ economic efficiency.     

Structural models of corporate bond pricing with personal taxes

The structural approach offers an integrated framework to deal with yield spreads and default probability simultaneously. However, structural models perform poorly in predicting corporate bond spreads. It is unclear whether this poor performance is caused by characteristics of individual models, missing factors, or different calibration procedures. This study evaluates the performance of four structural models by incorporating two important factors, personal taxes and the liquidity factor, and calibrating these models to data. To ensure our results are not contingent on the calibration method, we further apply the maximum likelihood estimation method to a large sample of individual bonds. Results consistently show that the ability of structural models to predict spreads improves considerably when personal taxes and liquidity are taken into account. Our findings suggest that the poor performance of standard structural models is more likely due to missing factors than the characteristics of individual models or the calibration procedure.     

Bankruptcy probability changes and the differential informativeness of bond upgrades and downgrades

Prior studies have found that stock returns around announcements of bond upgrades are insignificant, but that stock prices respond negatively to announcements of bond downgrades. This asymmetric stock market reaction suggests either that bond downgrades are timelier than upgrades, or that voluntary disclosures by managers preempt upgrades but not downgrades. This study investigates these conjectures by examining changes in firms’ probabilities of bankruptcy (assessed using bankruptcy prediction models) and voluntary disclosure activity around rating change announcements. The results indicate that the assessed probability of bankruptcy decreases before bond upgrades, but not after. By contrast, the assessed probability of bankruptcy increases both before and after bond downgrades. We also find that controlling for potential wealth-transfer related rating actions, which can impact stock returns differently, does not alter our results. Tests of press releases and earnings forecasts issued by firms suggest that the differential informativeness of upgrades and downgrades is not caused by differences in pre-rating change voluntary disclosures by upgraded and downgraded firms. The results support the hypothesis that downgrades are timelier than upgrades.     

Credit risk and bond pricing of local government in China

The relationship between credit risk and the pricing of local government bonds in China is explored in this paper. The pricing of local government bonds was found to reflect credit risk, but the risk premium was small. The type of bond (‘directional’ or ‘non-directional’) significantly affected pricing. Repayment source had no effect. The authors make recommendations for the central government, local governments and investors.     

Modeling Eurobond credit ratings and forecasting downgrade probability

This article proposes and empirically tests a two-step model to forecast the downgrade probability of sterling-denominated Eurobonds. In the first step, the conditional expectation of credit rating is estimated, employing an ordered probit. In the second step, the likelihood of downgrade is modeled using credit rating, as obtained from the conditional mean in the first step, alongside with traditional operating measures in a binary-probit framework. By parameterizing a system of two equations, we are able to accommodate the disentangled effect of credit quality and company financial information on the downgrade risk. We find evidence of a nonlinear response to shifts in both credit rating and leverage. The model's forecasting performance is ascertained by means of cross validation and is benchmarked against both a naive model and a neural network model.     

Corporate bond liquidity and yield spreads: A review

Secondary market illiquidity is an important non-default factor affecting yield spreads. Yet, a review of the literature suggests the findings are mixed, both regarding the relative size of the default versus non-default components as well as the relative importance of liquidity premium for investment-grade and high-yield bonds. While in theory country and currency risk might affect international bonds' yield spreads, empirical findings show that international corporate bonds pricing and liquidity are generally affected by the same factors as the U.S. market. We identify several other areas of disagreement and challenges in the literature that warrant further research.     

Margin trading,short selling,and bond yield spread

Using a quasi-natural experiment, this study examines the effects of margin trading and short selling on bond yield spread in China. It finds that both margin trading and short selling can reduce bond yield spread. Additionally, it finds that margin trading lowers firms’ debt ratios and increases their credit ratings, which explains the reduced spread. In other words, margin trading can impact investors’ decisions by revealing positive information about a firm. Another finding is that short selling lowers the bond yield spread by decreasing earnings management, suggesting that short selling has an impact on investors’ decisions through its effect on corporate governance. Our results suggest that margin trading transmits positive information and short selling impacts firms’ policies. These results provide support for future regulations of margin trading and short selling.     

Yield spreads,agency costs and the corporate bond call feature

This paper theoretically compares yields and optimal default policies for callable and non-callable corporate debt. It shows that, contrary to the conventional wisdom, it is possible for the yield spread (callable minus non-callable) to be negative. It also identifies the key determinants of the yield spread. Next, it shows that the optimal default trigger for non-callable debt is higher than the trigger for callable debt, resulting in additional default-related costs. Thus, the use of non-callable debt gives rise to an indirect agency cost of early default, which is the difference in total firm value with callable and non-callable debt. This agency cost provides a rationale for the existence of callable debt. By examining the determinants of the magnitude of this agency cost, the conditions that make callable debt more attractive (to the issuing firm) relative to non-callable debt are identified. This allows certain predictions to be made regarding the likelihood of a call feature in a corporate bond. The model's implications are supported by existing empirical studies.     

State ownership and the cost of debt: Evidence from corporate bond issuances in China

Corporate credit risk can be reduced through implicit government guarantees. State-owned enterprises (SOEs) in China provide a distinctive setting to investigate government roles in corporate debt financing. We find that non-SOEs’ corporate bond issuance costs are significantly higher than those of SOEs. We also observe relatively lower bond issuance costs for firms controlled by the central government (CSOEs) than those controlled by local governments (LSOEs). In addition, we demonstrate that compared with SOEs, non-SOEs’ financial constraints are mitigated to a larger extent after the bond issuances. Overall, we show that state ownership plays an important role in determining corporate bond issuance costs.     

An empirical analysis of the determinants and pricing of corporate bond clawbacks

This paper presents empirical analysis of the factors that affect a firm's decision to use a clawback provision in debt and the yield impact of including the clawback provision. The results show that relatively smaller firms with low credit rating and low profitability favor the usage of clawback provisions. We also find that debt with clawback provisions have the highest yield spread followed by callable bonds and straight debt. Convertible bonds that offer investors the option to convert to equity have lower yield spread. This implies that issuers can trade off flexibility for higher interest cost and that the clawback feature may be a significant financial innovation which reduces information asymmetry and creates an entry point for small firms to gain access to the public bond markets.     

The market for corporate control and the cost of debt

How do bondholders view the existence of an open market for corporate control? Between 1985 and 1991, 30 states in the U.S. enacted business combination (BC) laws, raising the cost of corporate takeovers. Relying on these exogenous events, we estimate the influence of the market for corporate control on the cost of debt. We identify different channels through which an open market for corporate control can benefit or harm bondholders: a reduction in managerial slack or the “quiet life,” resulting in higher profitability and firm value; a coinsurance effect, in which firms become less risky after being acquired; and an increasing leverage effect, in which bondholder wealth is expropriated through leverage-increasing takeovers. Consistent with the first two mechanisms, we find that the cost of debt rose after the passage of the BC laws; moreover, it rose sharply for firms in non-competitive industries, and for firms rated speculative-grade. In contrast, there is virtually no effect for firms in competitive industries, or firms rated investment-grade.     

Contagion effect on bond portfolio risk measures in a hybrid credit risk model

This paper illustrates how modelling the contagion effect among assets of a given bond portfolio changes the risk perception associated to it. This empirical work is developed in a hybrid credit risk framework that incorporates recovery rate risk. Dependence structures among firms and between external shocks affecting firms together are considered. The presence of correlations among firm leverage ratios and the interrelation between default probabilities and recovery rates produces clusters of defaults with low recovery rates. This has a major impact on standard risk measures such as Value-at-Risk and conditional tail expectation. Consequently, an appropriate measurement of the contagion has a tremendous effect on the capital requirement of many financial institutions.