基于边际效应的银行个体系统性风险贡献测度研究

本文使用系统性风险β值法度量我国上市银行的系统性风险以及上市银行对系统性风险的贡献度。研究结果表明,单个机构对系统性风险的贡献不仅取决于系统性风险β值,还受到其个体风险值的影响。总体而言,国有大型商业银行的系统性风险β值高于中小股份制商业银行,对系统性风险的边际贡献和影响也较大。但中小股份制商业银行抵御风险的能力相对较弱,尽管β值较小,一旦个体风险值急剧增加,其对系统性风险的影响也可能超过国有大型商业银行。因此,系统性风险的防范既要关注那些系统性风险β值大的银行,也要关注个体风险值可能出现剧烈波动的中小银行。     

金融衍生工具与银行系统性风险

从巴林银行倒闭到中航油、中石化衍生品交易巨亏,重新审视金融衍生工具与系统性风险的关系成为必然。金融衍生工具运用规模和比例呈急剧上升趋势,其初衷为对冲风险,契合金融服务实体经济功能,但由于其交易规则具有复杂性和不透明性,实施效果亟待检验。本文采用金融衍生工具视角,探索了分类金融衍生工具对银行系统性风险的影响及作用机理。结果表明,金融衍生工具会加剧银行系统性风险,包括外汇类和利率类金融衍生工具。金融衍生工具运用总体效果并不理想,且存在情境依赖,作用发挥呈现异质性。在后金融危机时代以及股市处于熊市时,金融衍生工具均加剧了银行系统性风险,在危机前则降低了银行系统性风险,但当处于牛市时则无显著影响。此外,在市场化进程高、机构持股比例高时,金融衍生工具加剧银行系统性风险的作用更为明显。本文从一个新的视角检验了银行系统性风险的影响因素,为探究其成因提供了新解释,也为未来系统性风险防控提供了新思路。     

Does financial connectedness predict crises?

The global financial crisis has reignited interest in models of crisis prediction. It has also raised the question whether financial interconnectedness—a possible source of systemic risk—can serve as an early warning indicator of crises. In this paper, we examine the ability of connectedness in the global network of financial linkages to predict systemic banking crises during the 1978–2010 period. Our results indicate that increases in a country’s own connectedness and decreases in its neighbours’ connectedness are associated with a higher probability of banking crises after controlling for macroeconomic fundamentals. Our findings suggest that financial interconnectedness has early warning potential, especially for the 2007–2010 wave of systemic banking crises.     

宏观审慎政策的国际协调问题研究--基于我国的DSGE模拟分析

本文在两国模型的DSGE框架下引入宏观审慎政策监管机制,把金融摩擦、国际资本流动和宏观审慎政策纳入同一个一般均衡分析框架。通过国际贸易和国际资本流动机制,考察宏观审慎政策的国际影响机制。基于我国的模拟分析结果表明,第一,对于我国来说,宏观审慎政策的国际合作不仅能够有效地应对国内经济冲击,也有助于抵御外部经济冲击。第二,我国推动构建国际宏观审慎政策长效合作机制,有助于积极应对国际资本流动,促进我国资本市场进一步开放。第三,我国宏观审慎政策存在国际溢出效应,但是对其他国家的影响并不明显。     

系统性金融风险的监测和度量——基于中国金融体系的研究

国际实践表明,系统性金融风险不仅危及金融稳定,更会给宏观经济和社会财富造成巨大损失。在国际金融危机带来的外部风险输入和我国转轨阶段自身周期性和结构性问题叠加的背景下,我国实体经济与金融体系面临的风险上升并逐步显现。如何构建系统性金融风险的监测和度量方法,从而有效地识别、防范和化解风险成为一个重要而紧迫的课题。本论文借鉴国内外最新的研究和实践成果,在国内外现有研究尚不成熟的方面深入探索。论文将系统性金融风险产生的原因归纳为内部和外部两大因素,将传导机制归纳为内部传导和跨境传导,将扩散机制归纳为信贷紧缩机制、流动性紧缩机制和资产价格波动机制。立足我国转轨体制特点和当前系统性金融风险状况,论文提出了包含7个维度的系统性金融风险综合指数,在采用马尔科夫状态转换方法对综合指数进行实证分析的基础上,识别和判断风险指标的状态和拐点,并度量和预警综合指数状态转移的信息,由此有效衔接宏观审慎和微观审慎,构建一个既可以综合分析整体风险,又可以分解进行局部研究的系统性金融风险监测和度量方法。综合指数模型还引入了指数修正机制以更好地适应中国金融市场的动态发展。     

How does deposit insurance affect bank risk? Evidence from the recent crisis

Deposit insurance is widely offered in a number of countries as part of a financial system safety net to promote stability. An unintended consequence of deposit insurance is the reduction in the incentive of depositors to monitor banks which lead to excessive risk-taking. We examine the relation between deposit insurance and bank risk and systemic fragility in the years leading up to and during the recent financial crisis. We find that generous financial safety nets increase bank risk and systemic fragility in the years leading up to the global financial crisis. However, during the crisis, bank risk is lower and systemic stability is greater in countries with deposit insurance coverage. Our findings suggest that the “moral hazard effect” of deposit insurance dominates in good times while the “stabilization effect” of deposit insurance dominates in turbulent times. The overall effect of deposit insurance over the full sample we study remains negative since the destabilizing effect during normal times is greater in magnitude compared to the stabilizing effect during global turbulence. In addition, we find that good bank supervision can alleviate the unintended consequences of deposit insurance on bank systemic risk during good times, suggesting that fostering the appropriate incentive framework is very important for ensuring systemic stability.     

普惠金融、金融深化与金融稳定--基于ARDL-ECM模型估计

本文利用中国1988~2016年宏观经济数据、金融数据,分别构建金融压力指数与普惠金融发展指数来反映我国的金融稳定状况和普惠金融发展状况,并利用ARDL-ECM模型来分析金融压力指数、普惠金融发展水平、金融深化水平之间的关系。实证结果表明我国普惠金融的发展虽然短期会加大系统性金融风险,但是长期来看是有利于金融稳定的。并且对于我国来说金融深化短期内有利于缓解系统性金融风险,但是长期不利于金融稳定。同时,长期内金融深化可以加大普惠金融对金融稳定的有利影响,但是短期却会加大普惠金融不利于金融稳定的作用。     

Assessing financial instability: The case of Brazil

In this paper we use the arbitrage pricing theory to infer the probability of financial institution failure for banks in Brazil. We build an index of financial stability for Brazilian banks. Empirical results seem to provide evidence that after the Russian crisis in 1998, systemic risk has increased in the country but this risk has decreased over time through 2002. Furthermore, for individual major banks the probability of failure has decreased monotonically after the Russian crisis with the adoption of a floating exchange rate regime, an inflation-targeting framework and the introduction of the new payment system.     

Can CoCo-bonds mitigate systemic risk?

After the 2008 financial crisis, the idea of contingent convertible (CoCo) capital was revived as a means to stabilize individual banks, and hence the entire banking system. The purpose of this paper is to empirically test, whether CoCo-bonds indeed improve the stability of the banking system and reduce systemic risk. Using the broadly applied SRISK metric, we obtain contradicting results, which are based on the accounting of the CoCo-bond as debt or equity. This observation is problematic, as CoCo-bonds generally increase the loss-absorbing capacity of a bank. We remedy this shortcoming by proposing an adjustment to the original SRISK formula. Using empirical tests, we show that the undue disparity has been solved by our adjustment, and that CoCo-bonds reduce systemic risk, irrespective of their accounting. Our results are robust to different parametrizations and accounting standards, as well as issuance effects.     

Econometric measures of connectedness and systemic risk in the finance and insurance sectors

We propose several econometric measures of connectedness based on principal-components analysis and Granger-causality networks, and apply them to the monthly returns of hedge funds, banks, broker/dealers, and insurance companies. We find that all four sectors have become highly interrelated over the past decade, likely increasing the level of systemic risk in the finance and insurance industries through a complex and time-varying network of relationships. These measures can also identify and quantify financial crisis periods, and seem to contain predictive power in out-of-sample tests. Our results show an asymmetry in the degree of connectedness among the four sectors, with banks playing a much more important role in transmitting shocks than other financial institutions.     

How likely is contagion in financial networks?

Interconnections among financial institutions create potential channels for contagion and amplification of shocks to the financial system. We estimate the extent to which interconnections increase expected losses and defaults under a wide range of shock distributions. In contrast to most work on financial networks, we assume only minimal information about network structure and rely instead on information about the individual institutions that are the nodes of the network. The key node-level quantities are asset size, leverage, and a financial connectivity measure given by the fraction of a financial institution’s liabilities held by other financial institutions. We combine these measures to derive explicit bounds on the potential magnitude of network effects on contagion and loss amplification. Spillover effects are most significant when node sizes are heterogeneous and the originating node is highly leveraged and has high financial connectivity. Our results also highlight the importance of mechanisms that go beyond simple spillover effects to magnify shocks; these include bankruptcy costs, and mark-to-market losses resulting from credit quality deterioration or a loss of confidence. We illustrate the results with data on the European banking system.     

关于系统性金融风险预警体系的建设--以吉林省吉林市为例

近年来,吉林省吉林市金融行业发展迅速,农村信用合作社和村镇银行等金融机构不断设立。人民银行金融稳定部门对金融机构的监测困难也日益加大。如果不及时的发现、处置风险隐患,就会造成系统性金融风险。故急需建立相应的系统性金融风险预警体系来监测金融机构,杜绝风险发生。本文分析了系统性金融风险的成因、风险传导机制,初步建立系统性金融预警体系。提出了相应的处置意见以及构建建议。     

我国系统性金融风险预警指标体系构建——基于证券市场视角

本文从证券市场视角出发,采用“冲击权重法”,选取宏观经济运行状态、股票市场、银行安全、上市公司质量、个体投资者情绪、债券市场、金融衍生品市场以及对外经济状况8个方面的29个指标,构建我国系统性金融风险预警指标体系,并运用证券市场数据对其进行验证,发现该风险预警指标体系较为有效。同时,本文检验了当前我国系统性金融风险水平,结果显示其处于可控范围内。最后,本文从证券市场的角度提出系统性金融风险防范的政策建议。     

Has the financial system become safer after the crisis? The changing nature of financial institution risk

Six years after the collapse of Lehman Brothers, the question of whether the U.S. financial system has become less risky remains unanswered. On the one side, new regulations including Dodd-Frank and Basel III have made improvements by requiring higher bank capital, and financial institutions themselves have reduced risk-taking activities. On the other side, it has been argued that “the fundamental risks remained and the efforts of regulators and politicians were simply rearranging the deckchairs on the Titanic.” (Baily and Elliott, 2013) This paper highlights the changing nature of financial institution risk from 2005 to 2011. It finds that while these institutions have become less risky individually after the crisis, the financial market has become more vulnerable to systemic contagion. The causal inference that the crisis and the post-crisis legislation have gradually changed the nature of financial institution risk is drawn from a quasi-experimental design. This finding suggests that the ever more integrated financial system might experience more synchronized contractions in future crises, providing empirical support for the proposals of the inter-bank collective regulation of banks by Acharya (2009) in addition to the intra-bank collective regulations as in Froot and Stein (1998) and BIS (1996, 1999).     

宏观审慎视角下的系统性金融风险研究

全球金融危机使监管者认识到仅靠微观审慎监管无法保证金融系统的稳定,必须加强逆周期的宏观审慎监管。本文首先回顾了对系统性金融风险、宏观审慎监管等重要概念的认识和发展;其次比较了美国、欧盟的逆周期宏观审慎政策框架;再次对我国的信贷投放、资本监管和贷款损失拨备的顺周期性进行了实证检验;最后,本文对我国的逆周期宏观审慎监管提出了相关建议。     

尾部风险研究进展与评述

由于部分业务、部门或市场的尾部风险溢出不仅会引发金融体系的“多米诺骨牌”效应,而且会对实体经济产生巨大负外部性,因此尾部风险事件极易引起金融市场震荡。鉴于此,识别与监测尾部风险是有效防控系统性金融风险爆发与传染的起点。本文首先以全球金融危机为节点,根据文献厘清尾部风险测度指标在危机前后的脉络。其次,介绍与尾部风险传染密切相关的尾部风险相依、金融关联网络的相关研究进展,在此基础上对尾部风险溢出强度及溢出方向展开讨论。再次,本文归纳了引发尾部风险溢出的宏观、中观和微观层面的影响因素以及尾部风险管理的路径选择。最后,对当前及未来尾部风险相关研究进行评述与展望。据此,力求为我国进一步提高防范化解金融风险能力、统筹推进疫情防控和经济社会发展、促进国民经济稳健运行和良性循环提供借鉴。