商业银行银行账户利率风险管理面临的挑战

银行账户利率风险是目前商业银行面临的主要市场风险之一。该文基于当前商业银行风险管理实践揭示其银行帐户利率风险管理在计量、运用方面面临的挑战,指出商业银行必须从制度、计量、监测、控制等方面逐步建立相应体系,以强化银行账户利率风险管理,适应监管要求和新资本协议要求。     

Does prudential regulation contribute to effective measurement and management of interest rate risk? Evidence from Italian banks

This paper contributes to prior literature and to the current debate concerning recent revisions of the regulatory approach to measuring bank exposure to interest rate risk in the banking book by focusing on assessment of the appropriate amount of capital banks should set aside against this specific risk. We first discuss how banks might develop internal measurement systems to model changes in interest rates and measure their exposure to interest rate risk that are more refined and effective than are regulatory methodologies. We then develop a backtesting framework to test the consistency of methodology results with actual bank risk exposure. Using a representative sample of Italian banks between 2006 and 2013, our empirical analysis supports the need to improve the standardized shock currently enforced by the Basel Committee on Banking Supervision. It also provides useful insights for properly measuring the amount of capital to cover interest rate risk that is sufficient to ensure both financial system functioning and banking stability.     

What Is Systemic Risk?

The traditional view of risk in a financial system is that it is the summation of individual risks within the system. However, the financial crisis that started in 2007 has driven home that this view of risk is inadequate. It is the interactions of financial institutions and markets that determine the systemic risks that drive financial crises. We identify four types of systemic risk. These are (i) panics—banking crises due to multiple equilibria; (ii) banking crises due to asset price falls; (iii) contagion; and (iv) foreign exchange mismatches in the banking system.     

The integrated impact of credit and interest rate risk on banks: A dynamic framework and stress testing application

Credit and interest rate risk are the two most important risks faced by commercial banks in their banking book. In this paper we derive a consistent and comprehensive framework to measure the integrated impact of both risks. By taking account of the repricing characteristics of assets, liabilities and off balance sheet items, we assess the integrated impact of credit and interest rate risk on banks’ economic value and capital adequacy. We then stress test a hypothetical but realistic bank using our framework and show that it is fundamental to measure the impact of credit and interest rate risk jointly.     

Network,market, and book-based systemic risk rankings

We investigate the information content of stock correlation based network measures for systemic risk rankings, such as SIFIRank (based on Google’s PageRank). Using European banking data, we show that SIFIRank is empirically equivalent to a ranking based on average pairwise stock correlations as developed in this paper. The correlation based network measures complement currently available alternative systemic risk ranking methods based on book or market values. A further analytical investigation shows that the value-added appears to be mainly attributable to pairwise cross-sectional heterogeneity rather than to more subtle network relations and feedback loops.     

收益率曲线动态与银行经济价值的利率风险

本文在收益率曲线动态的主成分分析基础上,运用MonteCarlo模拟的主成分VaR方法,以我国五家商业银行为样本研究银行账户经济价值利率风险的计量方法,并与巴塞尔委员会标准久期法的结果进行比较。同时,对VaR模型的有效性进行了样本外的返回检验。研究发现,五家银行的经济价值面临的是利率上升的风险;非正态主成分VaR模型估计的经济价值利率风险,都要大于正态主成分VaR模型的结果,这反映了利率波动的厚尾特征,正态假设有可能低估风险。     

Value relevance of banks: global evidence

Using 28,785 observations of 813 banking institutions in 38 countries during the 1993–2004 period, this study investigates among others, the role of transparency, accounting standards, legal, financing, corporate, and banking environments at the country level and size, risk, and organization form at the bank-specific level affecting the extent of value relevance. The evidence indicates that at the macro-level, the extent of mandated accounting disclosure, differences in accounting measurement practices, and type of legal environment, were the most influencing factors affecting the extent of value relevance of earnings and book values. At the bank-level, the organizational form and risk had the most impact.     

Bank portfolio exposure to emerging markets and its effects on bank market value

This study estimates a model of banking company equity returns taking into consideration book value and market value measures of their exposure to emerging markets debt. In this estimation, general systematic market factors, such as the rate of return on the S&P500 stock index and yields on a constant maturity 5-year Treasury note, are held constant such that the exposure variables are accounting for effects due to banks’ exposure to emerging market debt. The results, although not uniform among banking companies, support the hypothesis that the extent of exposure to emerging market debt are factored into the valuation of banking company equity contemporaneously. The inclusion of a market value indicator adds to the explanation of equity returns of some banks. It is also clear that knowing the extent of the exposure on a book value basis is important information alone that may allow investors to take account of or evaluate the effects of changes in banking company equity valuation from LDC debt exposures. We also perform an event study for three major debt crises to determine whether the market recognizes the effects of these events on bank valuation. The event study results show that there is little information from identifying the time period of the crises on banking company equity returns. Explanations for this are that the information of these possible crises has been embedded in bank changes in exposure and that the market valuation of the emerging market debt is already accounted for by our model.     

Reforming Banks Without Destroying Their Productivity and Value

Government‐protected banking systems tend to blow up, imposing huge losses on taxpayers. In a recent much‐publicized book, The Bankers' New Clothes, Anat Admati and Martin Hellwig propose to fix this problem by forcing banks to maintain 25% of their assets in the form of equity rather than debt. But this author argues, the book overstates the benefits and understates the costs of the proposed reform, while also failing to identify additional necessary reforms. Because bank equity is not true equity, and equity must be evaluated only in relation to risk, increasing required book equity ratios will not necessarily reduce the risk of bank failure significantly. Raising equity requirements is also socially costly because it reduces banks' willingness to lend. When banks need to raise their equity‐to‐asset ratios, they often choose to do so by cutting back on new loans, rather than paying the high costs of raising new equity. The reduction in loan supply that comes from raising equity ratios can be substantial, and is not just a one‐time cost. Balancing the costs and benefits of higher equity implies a much lower required equity ratio than the 25% posited in The Bankers' New Clothes. Finally, because equity ratios relative to risk should be the focus of prudential regulation, additional regulatory policy reforms that strengthen incentives for more effective risk management are needed in addition to higher capital ratios.     

银行资本管理工程化的逻辑框架与实施策略

银行资本管理是基于风险管理、财务管理基础上的战略管理,是衡量与协调风险、收益、规模和成长性的最有效工具之一,在现代银行经营管理中作用日益重要。本文首先总结了资本管理的相关理论,阐述了以经济资本管理为主,账面资本管理和资本充足率管理为辅的现代商业银行资本管理的总体架构。在此基础上提出了以工程化方式,统筹协调、循序渐进,逐步构建现代银行资本管理体系。现代银行资本管理体系建设内容主要包括过程管理、制度体系和信息系统三方面,其中,过程管理是资本管理体系的核心;现代化银行资本管理体系实施途径主要包括组织因素和阶段因素。     

我国商业银行经营投资银行业务对风险影响的实证研究

本文以2009-2018年19家商业银行为研究对象,运用波动性分析、相关性分析及面板数据回归分析方法,考察了经营投资银行业务对银行风险的影响。研究结果表明,投资银行收入无明显周期性趋势,波动性明显高于利息净收入,经营投资银行业务会加剧银行业收入的不确定性,但由于收入占比较小,投资银行业务并非造成我国银行业收入波动的主要因素。多数银行的投资银行收入与利息净收入表现为正相关性,银行难以通过经营投资银行业务实现风险分散目的。投资银行业务对银行风险影响的回归结果较为显著,随着投资银行收入在银行收入结构中的权重越来越大,银行多元化收入程度随之加深,银行风险也随之下降。     

Geographic diversification in banking

In the aftermath of the 2007–2009 crisis, banks claiming positive diversification benefits are being met with skepticism. Nevertheless, diversification might be important and sizable for some large internationally active banking groups. We use a universally applicable correlation matrix approach to calculate international diversification effects, in which bank subsidiaries are treated as individual assets of the banking group portfolio. We apply the framework to 49 of the world's largest banking groups with significant foreign business units over the 1992–2009 period. Focusing on the most important risk in banking, credit risk, we find that allowing for geographical diversification could reduce banks’ credit risk by 1.1% on average, with risk reduction ranging from negligible up to 8%.     

The value relevance of IFRS in the European banking industry

The main purpose of the paper is to investigate the market valuation of accounting information in the European banking industry before and after the adoption of IFRS, the latest version of International Accounting Standards. In a value relevance framework, we apply panel methods to a multiplicative interaction model, in which the partial effects of earnings and book value on share prices are conditional on the adoption of IFRS. According to our evidence, the IFRS introduction enhanced the information content of both earnings and book value for more transparent banks. By contrast, less transparent entities did not experience significant increase in the value relevance of book value.     

Japan’s banking crisis: An event-study perspective

We calculate abnormal stock returns for Japanese non-financial companies around major events associated with the banking crisis (1995–2000), and find that not all companies were equally sensitive to the malaise of the banking sector: the most affected were small, leveraged, low-tech companies with low credit ratings and low market to book ratios. This is consistent with “credit crunch” theories (companies with limited access to financial markets are sensitive to changes in bank lending) and with claims that innovation is rarely financed by bank debt. We do not find much evidence on the alleged misallocation of loans to support ailing bank clients.     

The quest for monetary and financial stability: a review of professor Dilip M. Nachane,critique of the new consensus macroeconomics and implications for India

We review Professor Nachane’s book on New Consensus Macroeconomics. The Review argues that such a consensus is possible not at theoretical level, but at policy level, clarifies the link of Keynes’s General Theory to his Treatise, introduced in the book, brings out contributions of Wicksell, Clower, and Schumpeter, missed out in the book, and evaluates the discussion of issues in central banking/financial sector reforms. The book emphasizes monetary/financial stability. We recommend applying a proposal for regulatory veto to securitized bundles of loans issued by different lenders. These represent business or gambling bets rather than theoretically possible aggregation of risks.     

Measuring systemic importance of financial institutions: An extreme value theory approach

This paper proposes a set of market-based measures on the systemic importance of a financial institution or a group of financial institutions, each designed to capture different aspects of systemic importance of financial institutions. Multivariate extreme value theory approach is used to estimate these measures. Using six big Canadian banks as the proxy for Canadian banking sector, we apply these measures to identify systemically important banks in Canadian banking sector and major risk contributors from international financial institutions to Canadian banking sector. The empirical evidence reveals that (i) the top three banks, RBC Financial Group, TD Bank Financial Group, and Scotiabank, are more systemically important than other banks, while we also find that the size of a financial institution should not be considered as a proxy of systemic importance; (ii) compared to the European and Asian banks, the crashes of the U.S. banks, on average, are the most damaging to Canadian banking sector, while the risk contribution to the Canadian banking sector from Asian banks is quite lower than that from banks in the U.S. and euro area; (iii) the risk contribution to Canadian banking sector exhibits “home bias”, that is, cross-country risk contribution tends to be smaller than domestic risk contribution.     

中国国有商业银行激励机制:一个新的非线性激励契约

我国传统的银行管理人激励方法是根据银行最终实现的收益决定对管理人的奖励,一般是线性的。本文通过对这种线性激励契约的剖析,发现由于银行管理人的有限责任以及企业软约束的存在,银行的预期收益与风险水平呈倒U字的二次关系,因此线性激励契约只会使管理人过度冒险,而无益于银行的预期收益。因此,本文构建了修正的资本资产定价模型,并在此基础上提出了一个新的非线性激励契约:对管理人的奖励计划不再是连续的,而是提供一个有限的奖励范围以避免银行管理人的过度冒险;只有当银行管理人选择的风险水平不超过最优风险水平时,他才可以拿到与其努力水平相等的奖金。     

对外开放是否导致银行业的风险上升？——基于外资持股比例与海外资产占比的实证检验

对外开放是否导致商业银行的风险上升,以往学者的研究结论并不统一。本文基于中国392家商业银行的微观数据,检验了“引进来”(用外资持股比例作为替代指标)与“走出去”(用海外资产占比作为替代指标)对商业银行风险承担行为的影响。结果显示,对外开放与商业银行的风险之间呈现非线性曲线特征并存在临界点;对中小型商业银行而言,过高的外资持股比例与过低的境外投资规模会带来风险;对大型商业银行而言,境外投资规模存在一个阈值区间,在阈值区间内,可能导致银行风险上升。政策建议是:外资参股中小型商业银行的比例可能不宜过高,鼓励中小型商业银行加大境外投资力度,大型商业银行可以根据特定时期的目标来调整对外开放策略,同时应强化风险预警与防范手段,在坚持与扩大银行业对外开放的背景下,实施宏观审慎原则,维护我国金融体系的整体稳定。     

改进的效率测算模型、影子银行与中国商业银行效率

商业银行及其效率的高低是金融供给侧结构性改革的关键环节,而可以压缩的“坏”投入和影子银行对商业银行效率产生重要影响。本文首次建立理论模型并分析影子银行影响商业银行效率的路径;方法上,同时区分投入和产出的“好”或“坏”,拓展只区分产出的“好”或“坏”的效率测算模型;实证上,首次测算并分析“坏”投入、影子银行业务对商业银行利润、风险和效率的影响。结果表明:理论上,影子银行会同时增加风险承担和利润,但无法确定经风险调整后的利润增加能否提升效率;只区分产出的模型高估了效率,尤其是显著高估四大行和股份制商业银行第一阶段的效率,大型商业银行依靠网点的扩张不利于效率的提升;影子银行业务提升了四大国有银行尤其是股份制银行的效率,但对中小型商业银行效率影响较小。总的来看,压缩“坏”投入和规范影子银行是增加有效金融供给、优化金融供给结构和提升银行效率的重要途径。     

Market discipline in international banking regulation: Keeping the playing field level

The focus of this article is the debt market as a powerful disciplinarian source for large and complex banking organizations around the world. We empirically study the interactions between reinforcing banks’ market discipline and preserving a level playing field in international banking. Our approach consists of conducting cross-country comparisons of the secondary market prices sensitivity to market measures of bank risk (traditional and financial strength ratings). The results are generally consistent with the market discipline paradigm. However, much progress still needs to be made (especially in Japan and certain European countries) in order to make the level playing field principle compatible with the reinforcement of market discipline on an international level.