An Empirical Study of International Spillover of Sovereign Risk to Bank Credit Risk

The severity and complexity of the recent financial crisis has motivated the need for understanding the relationships between sovereign ratings and bank credit ratings. This is the first study to examine the impact of the “international” spillover of sovereign risk to bank credit risk through both a ratings channel and an asset holdings channel. In the first case, the downgrade of sovereign ratings in GIIPS (Greece, Italy, Ireland, Portugal, and Spain) countries leads to rating downgrades of banks in the peripheral countries. The second channel indicates that larger asset holdings of GIIPS debt increases the credit risk of cross‐border banks, and hence, the probabilities of downgrade.     

财务重述影响供应商向企业提供商业信用吗——来自A股上市公司的经验证据

以我国2007-2014年上市公司为样本,实证检验财务重述对供应商向企业提供商业信用融资规模的影响.研究结果表明:财务重述引起了供应商对目标企业会计信息质量的关注,导致企业商业信用融资规模减少,并且在非国有企业、市场地位低的企业以及金融生态环境较差的地区更为显著.进一步研究发现,上述结论因财务重述性质的异质性而存在差异.     

Modeling severity risk under PD–LGD correlation

In this article, a generic severity risk framework in which loss given default (LGD) is dependent upon probability of default (PD) in an intuitive manner is developed. By modeling the conditional mean of LGD as a function of PD, which also varies with systemic risk factors, this model allows an arbitrary functional relationship between PD and LGD. Based on this framework, several specifications of stochastic LGD are proposed with detailed calibration methods. By combining these models with an extension of CreditRisk+, a versatile mixed Poisson credit risk model that is capable of handling both risk factor correlation and PD–LGD dependency is developed. An efficient simulation algorithm based on importance sampling is also introduced for risk calculation. Empirical studies suggest that ignoring or incorrectly specifying severity risk can significantly underestimate credit risk and a properly defined severity risk model is critical for credit risk measurement as well as downturn LGD estimation.     

Rollover risk and credit risk under time-varying margin

For a firm financed by a mixture of collateralized (short-term) debt and uncollateralized (long-term) debt, we show that fluctuations in margin requirements, reflecting funding liquidity shocks, lead to increasing the firm’s default risk and credit spreads. The severity with which a firm is hit by increasing margin requirements highly depends on both its financing structure and debt maturity structure. Our results imply that an additional premium should be added when evaluating debt in order to account for rollover risks, especially for short-matured bonds. In terms of policy implications, our results strongly indicate that regulators should intervene fast to curtail margins in crisis periods and maintain a reasonably low margin level in order to effectively prevent creditors’ run on debt.     

A structural framework for modelling contingent capital

This paper develops a structural model of contingent capital. In contrast to existing approaches we explicitly link the firm’s total payout to its cost of debt, leading to a total payout that is linear in—as opposed to proportional to—asset value. In the special case that asset value evolves as affine geometric Brownian motion we derive closed-form expressions for limiting (i.e. perpetual) bond values. The proposed model is flexible, so that it can be used to gauge the relative merits of different variations of contingent capital, and parsimonious, so that it is relatively easy to implement in practice. An empirical example using data from the Canadian banking sector is provided that illustrates how the model can generate insights into problems that are of interest to both regulators and issuers of contingent capital (e.g. what range of conversion prices would be consistent with regulatory guidelines, and how expensive is contingent debt over this range).     

论法律信仰之中的道德精神

在当前的法治进程之中,道德精神对于树立法律信仰具有重要意义。使公民树立法律信仰,法律必须蕴涵公民认同的道德精神,诸如和谐、正义、诚信等要素必须成为法律价值的指引。     

Reducing tariff evasion: The role of trade facilitation

Can simplifying customs procedures reduce tariff evasion? We measure tariff evasion as the mis-representation of import values in response to increasing tariffs. In a dataset covering 121 countries and the whole set of HS6 product categories in 2012, 2015, and 2017, we show that simplifying border procedures, that is trade facilitation, reduces tariff evasion. Holding tariff rate constant at its mean, improving a country’s overall trade facilitation performance from the 25th percentile to the median reduces tariff evasion by almost 20%. The moderating effect is especially due to improving the pre-shipment legal certainty of customs procedures. Among the potential mechanisms, improving trade facilitation performance is effective in reducing tariff evasion due to under-reporting of import prices, as well as in countries with weaker control of corruption. The results suggest that countries can gradually implement trade facilitation reforms to cost-effectively minimize tariff evasion.     

B2B电商平台供应链金融典型模式及其比较分析

在对电商平台供应链金融模式进行总结的基础上,聚焦B2B电商平台的供应链金融业务,对9家典型B2B电商平台开展的供应链金融业务及其产品进行了描述,并从平台涉及领域、供应链金融开始时间、金融产品模式等六个方面进行了对比分析。结果表明:B2B电商平台往往是采取与金融机构合作的方式获取供应链金融资金需求;开展大宗物资交易的B2B电商平台开展供应链金融业务相对较早;与传统线下供应链金融业务相比,B2B电商平台供应链金融在信用融资和订单融资方面更有优势;B2B电商平台供应链金融产品可以根据不同平台以及买卖双方的特点进行创新设计,最后为电商供应链融资业务的发展提出建议。     

资本约束背景下定向降准对企业信贷的定向引导效果

2017年,央行将普惠金融和定向降准相结合,定向降准能否精准引流决定着政策的成败。基于上市公司2011年至2019年的面板数据,采用双重差分法检验定向降准是否能够实现其政策目标,定向向三农和小微企业引导信贷资源,并用三重差分法引入资本约束这一调节变量,检验资本约束的增强是否对定向降准的实施效果有影响。结果表明:定向降准能够达到政策目标,增加三农和小微企业可获得的信贷资源,此外资本约束对定向降准的实施效果无显著影响。     

我国数字贸易发展:现状、挑战与策略研究

借助互联网新技术的发展与应用推广,全球数字贸易得以快速发展,市场规模增速已经超过传统货物贸易及服务贸易,成为世界贸易发展新动能。我国数字技术和数字经济的高速发展使传统制造业与服务业融合加深,贸易服务性更强,因此我国数字贸易正面临着前所未有的发展机遇。但数字贸易作为数字经济的重要表现形式,其经营模式以及国际间的冲突摩擦,又致使其面临诸多发展挑战,由此提出从内部制度和外部环境两方面同时进行改进与完善,进而推动我国数字贸易发展。