影子银行：体系、内生性风险及国际监管取向

摘要：全球金融危机后,国际社会从一个新的视角——影子银行体系来分析现代金融体系,并重构现代国际金融监管制度。影子银行体系的有效监管必须具有翔实的微观基础,比如体系边界、风险特征及表现形式等。国际上对影子银行体系并无公认的定义。影子银行具有证券化程度高、信息不透明、杠杆率较高等特征,这直接引致其存在诸多内生性金融风险,国际社会倾向于采用“类银行化”的监管路径对影子银行进行金融监管。国际社会采取的一系列法律、政策措施对我国影子银行监管具有一定的启示。     

Financial markets development,business cycles,and bank risk in South America

In this paper, we examine whether banking crises or business cycles affect the influence of financial markets development on bank risk in a sample of 37 publicly listed commercial banks in seven South American countries over a 22-year period between 1991 and 2012. Banking crises in this region offer a natural setting in which the impact of financial markets development on bank risk is examined. We find that financial markets development improves banks’ capitalization ratio and reduces their exposure to non-traditional banking activities, suggesting that financial markets development on average reduces bank risk. In addition, banking crises and business cycles appear to moderate the impact of financial markets development on bank risk. In the aftermath of banking crises, banks appear to concentrate more on their core traditional banking activities.     

银行表外国际融资业务快速增长带来的风险和管理思考

2010年以来,随着我国经济逐步走出金融危机的影响以及外贸形势的好转,银行表外国际融资业务增长迅猛,在给银行带来经营收入的同时,其风险也不容忽视。该文阐述了银行表外国际融资业务快速增长的成因,及其潜在的宏观与微观风险,并从加强银行内部管理和外部监管两个层面就完善表外国际融资业务的风险管理提出建议。     

Derivatives holdings and systemic risk in the U.S. banking sector

This paper studies the impact of the banks’ portfolio holdings of financial derivatives on the banks’ individual contribution to systemic risk over and above the effect of variables related to size, interconnectedness, substitutability, and other balance sheet information. Using a sample of 95 U.S. bank holding companies from 2002 to 2011, we compare five measures of the banks’ contribution to systemic risk and find that the new measure proposed in this study, Net Shapley Value, outperforms the others. Using this measure we find that banks’ aggregate holdings of five classes of derivatives do not exhibit a significant effect on the bank’s contribution to systemic risk. On the contrary, the banks’ holdings of certain specific types of derivatives such as foreign exchange and credit derivatives increase the banks contributions to systemic risk whereas holdings of interest rate derivatives decrease it. Nevertheless, the proportion of non-performing loans over total loans and the leverage ratio have much stronger impact on systemic risk than derivatives holdings. Therefore, the derivatives’ impact plays a second fiddle in comparison with traditional banking activities related to the former two items.     

Competition and risk‐taking in investment banking

How does competition affect the investment banking business and the risks individual institutions are exposed to? Using a large sample of investment banks operating in seven developed economies over 1997–2014, we apply a panel VAR model to examine the relationships between competition and risk without assuming any a priori restrictions. Our main finding is that investment banks’ higher risk exposure, measured as a long‐term capital‐at‐risk and return volatility, was facilitated by greater competitive pressures for both boutique investment banks and full‐service investment banks. Overall, we find some evidence that more competition leads to more fragility before and during the recent financial crisis.     

The systemic risk of European banks during the financial and sovereign debt crises

European banks became a source of risk to global financial markets during the financial crisis and attention to the European banking sector increased during the sovereign debt crisis. To measure the systemic risk of European banks, we calculate a distress insurance premium (DIP), which integrates the characteristics of bank size, probability of default, and correlation. Based on this measure, the systemic risk of European banks reached its height in late 2011 around €500 billion. We find that this was largely due to sovereign default risk. The DIP methodology is also used to measure the systemic contribution of individual banks. This approach identifies the large systemically important European banks, but Italian and Spanish banks as a group notably increased in systemic importance during the sample period. Bank-specific fundamentals like capital-asset ratios predict the one-year-ahead systemic risk contributions.     

Off-balance sheet exposures and banking crises in OECD countries

Against the background of the acknowledged importance of off-balance-sheet exposures in the sub prime crisis, we seek to investigate whether this was a new phenomenon or common to earlier crises. Using a logit approach to predicting banking crises in 14 OECD countries we find a significant impact of a proxy for the ratio of banks’ off-balance-sheet activity to total (off and on balance sheet) activity, as well as capital and liquidity ratios, the current account balance and GDP growth. These results are robust to the exclusion of the most crisis prone countries in our model. For early warning purposes we show that real house price growth is a good proxy for off balance sheet activity prior to the sub-prime episode. Variables capturing off-balance sheet activity have been neglected in most early warning models to date. We consider it essential that regulators take into account the results for crisis prediction in regulating banks and their off-balance sheet exposures, and thus controlling their contribution to systemic risk.     

Fund Management and Systemic Risk – Lessons from the Global Financial Crisis

Fund managers play an important role in increasing efficiency and stability in financial markets. But research also indicates that fund management in certain circumstances may contribute to the buildup of systemic risk and severity of financial crises. The global financial crisis provided a number of new experiences on the contribution of fund managers to systemic risk. In this article, we focus on these lessons from the crisis. We distinguish between three sources of systemic risk in the financial system that may arise from fund management: insufficient credit risk transfer to fund managers; runs on funds that cause sudden reductions in funding to banks and other financial entities; and contagion through business ties between fund managers and their sponsors. Our discussion relates to the current intense debate on the role the so‐called shadow banking system played in the global financial crisis. Several regulatory initiatives have been launched or suggested to reduce the systemic risk arising from non‐bank financial entities, and we briefly discuss the likely impact of these on the sources of systemic risk outlined in the article.     

Banks’ capital buffer,risk and performance in the Canadian banking system: Impact of business cycles and regulatory changes

Using quarterly financial statements and stock market data from 1982 to 2010 for the six largest Canadian chartered banks, this paper documents positive co-movement between Canadian banks’ capital buffer and business cycles. The adoption of Basel Accords and the balance sheet leverage cap imposed by Canadian banking regulations did not change this cyclical behavior of Canadian bank capital. We find Canadian banks to be well-capitalized and that they hold a larger capital buffer in expansion than in recession, which may explain how they weathered the recent subprime financial crisis so well. This evidence that Canadian banks ride the business and regulatory periods underscores the appropriateness of a both micro- and a macro-prudential “through-the-cycle” approach to capital adequacy as advocated in the proposed Basel III framework to strengthen the resilience of the banking sector.     

商业银行影子银行业务风险监管研究

美国金融危机的爆发,使影子银行成为国际社会关注的焦点。由于我国稳健货币政策的实施,使得商业银行传统信贷业务被进一步压缩,一些商业银行纷纷通过业务创新来寻找新的利润增长点。我国商业银行在进行金融创新的同时,影子银行业务也得到不断发展。但是,这些影子银行业务将传统的表内资产转到表外,具有监管套利的性质,给影子银行的运行带来较大的潜在风险,同时也加大了政府宏观调控的难度。本文结合当前国内商业银行影子银行业务发展现状,对商业银行影子银行业务的风险监管进行了研究,并提出相关监管对策。     

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%.     

我国商业银行私人金融业务的风险特征及管理对策

近年来,私人金融业务在商业银行中的战略地位日益重要.但与此同时,作为推动这项业务持续发展的重要保障,私人金融业务的风险管理也必须同步完善.本文认为,相对于公司业务和以储蓄业务为主的传统私人金融业务而言,现代私人金融业务具有其鲜明而迥异的风险特征.而对这些风险特征的忽略,导致了当前我国商业银行的风险管理体系仍然沿用以公司业务为重点的传统模式,风险管理模式的转型滞后于私人金融业务战略地位的转型.为此,作者指出,必须针对私人金融业务的风险特征,重新构建商业银行的风险管理体系,并相应完善商业银行风险管理的外部环境.     

美国的影子银行系统

影子银行是指游离于传统商业银行体系之外的、从事与传统银行相类似的金融活动但却不受监管或几乎不受监管的金融实体。次贷危机爆发前,美国的影子银行体系发展达到巅峰状态。在本次金融危机中,影子银行系统备受诟病,被认为是此次危机的罪魁祸首。文章对美国影子银行系统的构成、业务流程及投融资活动等进行了梳理,以期为理解次贷危机前美国金融体系的运行特征提供启示。     

The Wealth and Risk Effects of the Gramm‐Leach‐Bliley Act (GLBA) on the US Banking Industry

Abstract:   The Gramm‐Leach‐Bliley Act (GLBA) of 1999 marks the end of Depression era regulations like the Glass‐Steagall Act of 1933 and Bank Holding Company Act of 1956. These acts have restricted banks from securities and insurance underwriting business. This paper examines the impact of the GLBA on the banking industry. We find that the banking industry has a welfare gain from this law. We investigate two different categorizations of the banking industry. We find that Money Center banks followed by the Super Regional banks benefited most from this deregulation. On the other hand, banks that had Section 20 investment subsidiaries gained more than other banks in the second category. The results also show that the exposure to systematic risk for different categories of banks decreased after the passage of this law, which implies that the GLBA is fairly successful in containing the risk that accompanied the act and also created diversification opportunities. For Money Center banks, Super Regional Banks, banks with a section 20 subsidiary and banks with a new financial subsidiary, a shift in the exposure to systematic risk can explain the overall cross sectional variation in return from the deregulation. In both categorizations we find that larger banks gained more, while the overall explanatory power of profitability is not conclusive.     

Determinants of risk in the banking sector during the European Financial Crisis

Risk assessment in the banking sector has been a prominent topic in the banking literature and has gained attention especially since the recent financial crises. In particular, the European crisis, which was the first since the formation of the Eurozone, underlined a number of significant problems and increased concerns on the tail or crash risk of banks. In the present study, we seek to examine whether information asymmetry, the importance of banks in the financial system and systemic risk play significant roles in the evolution of stock crashes in the banking sector. Information asymmetry is proxied by opacity, the importance of a bank in a financial network is proxied by network centrality, and systemic risk is proxied by clustering. The research framework considers a number of regulatory, reporting and financial market factors that have also been determined to relate to stock crashes and shows that all of the above factors are related to (idiosyncratic) stock crash risk under specific conditions.     

The impact of central bank transparency on systemic risk—Evidence from Central and Eastern Europe

The aim of this paper is to analyze the impact of central bank transparency on systemic risk in emerging banking markets using a sample composed of 34 banks from Central and Eastern Europe for a period spanning from 2005 through 2012. Results indicate a positive and significant relationship between central bank transparency and financial institutions’ contribution to systemic risk. On the other side, increased central bank transparency significantly reduces the idiosyncratic risk of banks. The relationship is influenced by the restrictiveness of regulatory framework. We argue that a more transparent central bank is beneficial for the banking sector from a microprudential perspective. However, it may create incentives for financial institutions to engage in risky activities and through herd behavior may increase individual contribution to the risk of the banking system.     

论商业银行集团化经营的法律风险及其防控机制

集团化是现代银行最突出的特征之一。银行的集团化发展,可达到协同经营的目标,打破传统金融机构的竞争格局,使集团获得经营一体化带来的好处。但另一方面,复杂的股权关系、组织结构、内部往来、业务合作,也使得银行集团暴露于特殊的法律风险当中。在金融危机后,金融监管的严格化和法律环境的快速变化,使得银行集团面临的法律风险更为严峻。     

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.     

Nontraditional banking activities and bank failures during the financial crisis

We test whether income from nontraditional banking activities contributed to the failures of hundreds of U.S. commercial banks during the financial crisis. Estimates from a multi-period logit model indicate that the probability of distressed bank failure declined with pure fee-based nontraditional activities such as securities brokerage and insurance sales, but increased with asset-based nontraditional activities such as venture capital, investment banking and asset securitization. Banks that engaged in risky nontraditional activities also tended to take risk in their traditional lines of business, suggesting that deregulation was neither a necessary nor a sufficient condition for bank failure during the crisis.     

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.