Sovereign debt renegotiation and credit default swaps

A credit default swap (CDS) contract provides insurance against default. This paper incorporates the contract into a sovereign default model and demonstrates that the existence of a CDS market results in lower default probability, higher debt levels, and lower financing costs for the country. Uncertainty over the insurance payout when the debt is renegotiated explains why in the data, as the output declines, the CDS spread becomes lower than the bond spread. Finally, my results show that the 2012 CDS naked ban, that decreased the levels of CDS for European countries, is a welfare reducing policy.     

劳动保护、社保压力与企业违约风险——基于《社会保险法》实施的研究

本文利用2011年《社会保险法》实施的政策冲击所造成的准自然实验情境构建双重差分模型,考察了劳动保护对上市公司债务违约风险的影响。研究发现,劳动保护加强后,劳动密集型企业的违约风险显著提升了约1.5%。在此基础上,进一步检验了劳动保护影响企业违约风险的渠道,发现劳动保护提高了企业的经营性负债水平,并最终提高了违约风险。此外,在国有企业、融资约束水平较高、信息披露水平较低和创新水平较低的企业,劳动保护对企业违约风险的影响更加显著。本文拓展了劳动保护经济后果的研究,也为评价《社会保险法》的政策后果提供了新的经验证据。本研究可为"新冠"疫情期间政府制定政策减免企业社保支出提供参考。     

Borrowing constraints,the cost of precautionary saving and unemployment insurance

When it is costly for individuals to save or to borrow, unemployment insurance (UI) provides an alternative source of liquidity that smooths consumption over time and leads individuals to spend longer unemployed searching for a suitable job. We show in a tractable life-cycle model how the optimal unemployment replacement ratio and the fall in consumption on job loss depend on the cost of self-insurance and the cost of borrowing. This implies that the value of UI depends on age at job loss, consumption needs (such as the presence of children), discount rates, the return on saving, access to credit and the presence of other social insurance programmes. Optimal replacement rates vary substantially with plausible variation in these factors (from less than 20 percent to almost 60 percent).     

公司信用债违约风险预警与防范研究

我国债券规模位居世界第二,债券市场已成为企业直接融资的主要渠道;同时我国公司信用债违约频发,违约主体几乎涵盖了全部行业,永煤AAA债券违约事件引发各方关注。在此背景下,本文研究了信用债违约风险预警与防范,搭建了债券违约预警模型:一是深入分析了违约原因,提出了"经济下行加剧‘债务-通缩’""流动性分层导致再融资困难""民企互保引发违约风险串联"的观点;二是基于KLR信号分析法,以历史违约主体财报数据为基础构建了上市公司债违约预警模型,抽离出相关指标权重构成预警指标体系,并进行了实证检验;三是基于预警模型,提出加强动态监测、构建债券风险分类管理办法等政策建议。     

Distressed Debt Restructuring in the Presence of Credit Default Swaps

The availability of credit insurance via credit default swaps has been closely associated with the emergence of empty creditors. We empirically investigate this issue by looking at the debt restructurings (distressed exchanges and bankruptcy filings) of rated, nonfinancial U.S. companies over the period January 2007–June 2011. Using different proxies for the existence of insured creditors, we do not find evidence that the access to credit insurance favors bankruptcy over a debt workout. However, we document higher recovery prices following a distressed exchange in firms where empty creditors are more likely to emerge.     

Determinants of Mortgage Default and Consumer Credit Use: The Effects of Foreclosure Laws and Foreclosure Delays

The mortgage default decision is part of a complex household credit management problem. We examine how factors affecting mortgage default spill over to other credit markets. As home equity turns negative, homeowners default on mortgages and home equity lines of credit at higher rates, whereas they prioritize repaying credit cards and auto loans. Larger unused credit card limits intensify the preservation of credit cards over housing debt. Although mortgage nonrecourse statutes increase default on all types of housing debt, they reduce credit card defaults. Foreclosure delays increase default rates for housing and nonhousing debts. Our analysis highlights the interconnectedness of debt repayment decisions.     

Implicit government guarantees and credit ratings

Exploiting the first default of a state-owned enterprise (SOE) in China, we analyze the role of implicit government guarantees in credit ratings. We consider two causes of implicit government guarantees. First, we suggest a “too big to fail” effect by revealing positive associations between credit ratings and issuer size, number of employees and taxes paid. Second, we propose a “government link” effect by showing positive associations between credit ratings and an issuer's state ownership, indicators for SOEs and central SOEs. Importantly, after the first SOE default, both dimensions of implicit government guarantees are weakened when explaining credit rating variations. Extending to analyses of yield spreads, we find that debt pricing relies more on credit ratings after the default event, consistent with bond investors weighing credit ratings more with weakened beliefs in implicit government guarantees. Collectively, our study proposes two dimensions of implicit government guarantees in credit ratings and shows how the initial SOE default significantly changes the role of such guarantees in credit ratings.     

债务杠杆、财务脆弱性与家庭异质性消费行为

本文通过引入财务脆弱性来描述家庭无法及时或完全履行偿债义务而发生的财务困境,实证分析了债务杠杆对家庭消费的异质性影响。理论机制分析和基于中国家庭金融调查(CHFS)数据的实证研究表明,家庭债务杠杆会提升财务脆弱性,从而弱化跨期消费平滑能力,强化消费预算约束,导致家庭落入“高边际消费倾向、低消费支出水平”的低层次消费路径上。进一步分析发现,对于通过负债投资多套房的家庭而言,高债务杠杆会明显增加不确定冲击下的财务脆弱性,进而对消费产生更大的抑制效应;亲友民间借贷的履约机制相对灵活,可以缓解财务脆弱性对家庭消费的抑制效应;债务杠杆上升引致的财务脆弱性,对耐用消费品支出的压缩效应大于非耐用消费品,对农村家庭消费支出的挤占效应大于城镇家庭。本文的研究为我国“不宜依赖消费金融扩大消费”“规范发展消费信贷”等提供了理论解释,对金融服务促进消费发展具有一定政策启示。     

房价调控、地方政府债务与宏观经济波动

在地方政府债务高企的背景下,房价调控能否使资本流向非房地产部门？房价调控如果触发地方政府债务违约,宏观政策应如何应对？本文基于中国宏观经济的特征事实,引入地方政府的土地财政行为,将房价变动与地方政府的偿债能力联系起来。研究表明,由于地方政府依赖土地出让和土地抵押贷款筹集收入,房价管控导致的地价下降会带来地方政府收入的下降,直接影响地方政府的偿债能力。如果地方政府债务不出现违约,那么房价管控带来的地价下降会降低地方政府从金融部门获得的抵押融资额,使非基建部门的融资成本下降,非基建部门投资和产出上升。而如果调控房价带来的地价下降导致地方政府出现债务违约,金融部门资产受损,使金融中介减少贷款和提高贷款成本,带来整个社会的信贷紧缩,经济中各个部门的产出大幅下降。进一步的政策分析表明,有必要在避免地方政府债务违约的同时,使用财政资金补充银行资本金等多种方式稳定金融中介的资产负债表,从而将房价调控对经济的负面影响程度降到最低。     

Use of credit and arrears on debt among low‐income families in the United Kingdom

Household accumulation of debt and arrears on debt, especially among low‐income families, is an extremely topical issue in the UK media and in policy circles. This paper utilises data from the UK's Survey of Low Income Families in order to examine use of credit, and default and arrears, among low‐income families with children. It shows how credit use and accumulation of arrears differ between single parents and couples with children, and also between homeowners and renters. It also briefly examines the persistence of arrears on specific forms of credit using the panel element of the data‐set, now named the Families and Children Survey.     

Optimal Security Design and Dynamic Capital Structure in a Continuous-Time Agency Model

We derive the optimal dynamic contract in a continuous‐time principal‐agent setting, and implement it with a capital structure (credit line, long‐term debt, and equity) over which the agent controls the payout policy. While the project's volatility and liquidation cost have little impact on the firm's total debt capacity, they increase the use of credit versus debt. Leverage is nonstationary, and declines with past profitability. The firm may hold a compensating cash balance while borrowing (at a higher rate) through the credit line. Surprisingly, the usual conflicts between debt and equity (asset substitution, strategic default) need not arise.     

民营企业债务违约是内因驱动吗？——基于短贷长投和多元化经营视角的分析

不同于以往从外部因素的角度关注民营企业债务问题,本文从企业自身行为出发分析了民企债务违约是否由内因驱动。具体地,本文考察了短贷长投和多元化经营对民营企业债务违约的影响。结果发现,总体上短贷长投以及多元化程度提高了民企债务违约的可能性。从传导机制上看,短贷长投和多元化降低了企业的盈利水平、提高了过度负债、增加了代理成本,并通过以上三个渠道提高了企业债务违约的可能性。从异质性结果来看,信贷紧缩会加大短贷长投对债务违约的促进作用。对于政府支持的行业而言,短贷长投和多元化引发的债务违约问题更严重。最后,更多的短贷长投和多元化在决策得当情况下不会引发债务违约风险。本文的结果表明,民营企业债务违约主要是由内因驱动,即由企业在“求大”“上层次”的心理下实施的粗放式发展模式驱动。本文对于追溯民企违约的根源、精准施策进而更好地支持民企发展具有一定的启示。     

Dynamic risksharing in the United States and Europe

We use a panel VAR model to improve upon the existing methodologies to analyze interregional risksharing and consumption smoothing channels. First, we endogenize the output process within a more general multi-equation framework, capturing the dynamic feedback between output and various smoothing channels. Second, in line with dynamic general equilibrium open economy models of risksharing, we exploit impulse response functions to trace the role of each smoothing channel over time, in the presence of different structural shocks (temporary vs. permanent and output vs. smoothing channels). In the application to the US and OECD countries, we find different dynamic properties of different smoothing channels. We compare our results with the predictions of standard risksharing and consumption theories, and tackle some of the puzzles in the literature, such as the “international risksharing puzzle” and the “consumption-output correlation puzzle.” We are also able to address such policy issues as whether fiscal stabilizers have been substitutes or complements for financial market diversification activities and whether further financial market integration is likely to provide countries with more shock-absorption tools. A key result is the strong substitutability between capital and credit smoothing in the US, and between fiscal and credit smoothing in the OECD.     

From equity to default correlation with taxes

For fixed income investment, the preponderant risk is the clustering of defaults in the portfolio. Accurate prediction of such clustering depends on the knowledge of default correlation. We develop models with exogenous debt and endogenous debt to predict default correlations from equity correlations based on a self-consistent structural framework. We also examine how taxes affect the prediction of default correlations based on the two models. The empirical analysis shows that the corporate taxes tend to decrease default correlations, while personal taxes could increase or decrease default correlations. Our default correlation model with exogenous debt does a better job of predicting default correlations for high quality bonds, while the one with endogenous debt predicts more accurately for lower rated bonds. Our studies not only theoretically improve the modeling of default correlation in the structural setting but also shed new light on various aspects of default correlations and thereby help financial practitioners price credit derivatives more accurately and formulate more effective strategies to manage default risk of credit portfolios.     

经济政策不确定性、地区文化与保险需求

本文在拓展背景风险理论研究的基础上,揭示了经济政策不确定性对保险需求的影响及其受地区文化制约的理论机制。并利用2007-2017年中国30个地区的月度面板数据,检验了经济政策不确定性、地区文化与保险需求间的内在联系。结果发现:第一,经济政策不确定性会对保险需求产生显著正影响,且这种效应在地区人身险需求上表现更明显;第二,将地区文化指标集纳入经济政策不确定性与保险需求关系的研究框架,发现地区文化差异会对经济政策不确定性影响保险需求产生调节效应。因此政府需在充分重视经济政策波动和文化对经济活动的双重影响基础上,加强国内社会保障体系建设,建立更透明的信息传递渠道,培育人们主动抵抗风险的意识和文化习惯,调整保险供给结构,以减少不确定性对社会经济行为的负面冲击。     

Credit Card Debt and Default over the Life Cycle

This paper solves an empirically parameterized model of life cycle consumption, which allows for uncollaterized borrowing and the possibility of default. The simulation results show that: (i) "social stigma " and credit limit have a very large impact on default rates; (ii) education level also has a significant effect on the probability of default, namely, through differences in the shape of lifetime labor income profiles; and (iii) the response of simulated default rates to labor income shocks is determined by the nature of labor income uncertainty (temporary versus permanent). Additionally, the model generates simultaneous consumer holdings of credit card debt and liquid assets.     

经济政策不确定性与企业贷款成本

基于大样本微观银行信贷数据,本文研究经济政策不确定性对企业的银行贷款成本的影响。研究发现,经济政策不确定性升高导致企业的银行贷款成本增加,且使得在中小型银行贷款的企业成本增加更多。异质性分析表明,经济政策不确定性升高对受政策因素影响较大的企业如小微企业、私营企业等的银行贷款成本的影响更为明显。进一步,对企业的银行贷款违约风险的研究发现,随着经济政策不确定性升高,企业的银行贷款违约风险反而降低。这表明,经济政策不确定性升高使得银行选择风险评级更低的贷款,符合谨慎性动机。本文研究结论表明,经济政策不确定性升高时,银行“自我保险”动机的增强使得企业的银行贷款成本增加,这在中小型银行中表现得更加明显,同时也更多地转嫁给中小企业。本文为经济政策不确定性对企业投资、宏观经济波动等的研究提供了微观解释机制,并揭示了政府经济政策的一致性、稳定性对维护金融稳定的重要作用。     

Sovereign default risk,overconfident investors and diverse beliefs: Theory and evidence from a new dataset on outstanding credit default swaps

In standard public finance theory a government's cost of borrowing depends on the common beliefs held by rational investors regarding default risk. We advance understanding of the effects of diverse beliefs and overconfidence among investors in their ability to assess the sovereign's creditworthiness. Theoretically, we find that demand for insurance against default is positively related to the absolute difference between the market price of sovereign risk and the risk forecasted by the economy's fundamentals. We find preliminary support for this prediction in a newly available dataset on sovereign credit default swaps (CDSs): after controlling for the size of the public debt, the absolute size of the gap between the actual and forecasted spreads is positively related to the value of outstanding CDSs.     

A Macrofinance View of U.S. Sovereign CDS Premiums

Premiums on U.S. sovereign credit default swaps (CDS) have risen to persistently elevated levels since the financial crisis. We examine whether these premiums reflect the probability of a fiscal default—a state in which a balanced budget can no longer be restored by raising taxes or eroding the real value of debt by increasing inflation. We develop an equilibrium macrofinance model in which the fiscal and monetary policy stances jointly endogenously determine nominal debt, taxes, inflation, and growth. We show that the CDS premiums reflect the endogenous risk-adjusted probabilities of fiscal default. The calibrated model is consistent with elevated levels of CDS premiums but leaves dynamic implications quantitatively unresolved.     

Sign reversal in the relationship between income smoothing and cost of debt

Despite the fact that income smoothing by managers is a pervasive phenomenon that has been widely researched, extant literature provides incomplete evidence on how smoothing is associated with cost of debt in general, and in the private loan market in particular. The institutional factors associated with private loan contracts, combined with the theoretical motivations for smoothing, make it unclear whether smoothing will be positively, negatively, or not associated with loan spread. Using both cross‐country and within‐country analyses on an international sample of private loans, we predict and provide evidence that income smoothing is associated with lower cost of debt when the threat of private benefits consumption by managers is low, but is associated with higher cost of debt when the threat of private benefits consumption by managers is high. We provide the first evidence in the literature that the garbling effect of smoothing can predictably dominate the signaling view of smoothing in debt contract design, and we identify private benefits consumption threat as the feature of the contracting environment that empirically reveals a sign reversal in the relationship between smoothing and cost of debt.