Liquidity Coinsurance and Bank Capital

Banks can deal with their liquidity risk by holding liquid assets (self‐insurance), by participating in interbank markets (coinsurance), or by using flexible financing instruments, such as bank capital (risk sharing). We use a simple model to show that undiversifiable liquidity risk, that is, the liquidity risk that banks are unable to coinsure on interbank markets, represents an important risk factor affecting their capital structures. Banks facing higher undiversifiable liquidity risk hold more capital. We posit that, empirically, banks that are more exposed to undiversifiable liquidity risk are less active on interbank markets. Therefore, we test for the existence of a negative relationship between bank capital and interbank market activity and find support in a large sample of U.S. commercial banks.     

The determinants of U.S. banks’ international activities

This paper develops a model and structural dynamic estimation of bank behavior to map the relationship between U.S. banks’ choices of foreign banking activities, and bank and foreign market traits. This estimation framework is applied to a unique bank-level dataset compiled from regulatory sources, covering U.S. banks’ foreign activities in 83 host markets over the 2003–2013 period. Bank traits are better able to explain the evolving patterns of foreign banking than host market characteristics. After controlling for these traits, the post-financial crisis period shows a structural shift away from cross-border claims towards foreign affiliate activities. Structural estimates of foreign market entry costs and regulatory attitudes towards risk are derived. Simulation exercises confirm the strong impact of banks’ and regulators’ risk stance on bank profits and portfolio composition.     

Banks and sovereign risk: A granular view

We investigate the determinants of sovereign bond holdings of German banks and the implications of such holdings for bank risk. We use granular information on all German banks and all sovereign debt exposures in the years 2005–2013. As regards the determinants of sovereign bond holdings of banks, we find that these are larger for weakly capitalized banks, banks that are active on capital markets, and for large banks. Yet, only around two thirds of all German banks hold sovereign bonds. Macroeconomic fundamentals were significant drivers of sovereign bond holdings only after the collapse of Lehman Brothers. With the outbreak of the sovereign debt crisis, German banks reallocated their portfolios toward sovereigns with lower debt ratios and bonds with lower yields. With regard to the implications for bank risk, we find that low-risk government bonds decreased the risk of German banks, especially for savings and cooperative banks. Holdings of high-risk government bonds, in turn, increased the risk of commercial banks during the sovereign debt crisis.     

Funding liquidity and bank risk taking

This study examines the relationship between funding liquidity and bank risk taking. Using quarterly data for U.S. bank holding companies from 1986 to 2014, we find evidence that banks having lower funding liquidity risk as proxied by higher deposit ratios, take more risk. A reduction in banks’ funding liquidity risk increases bank risk as evidenced by higher risk-weighted assets, greater liquidity creation and lower Z-scores. However, our results show that bank size and capital buffers usually limit banks from taking more risk when they have lower funding liquidity risk. Moreover, during the Global Financial Crisis banks with lower funding liquidity risk took less risk. The findings of this study have implications for bank regulators advocating greater liquidity and capital requirements for banks under Basel III.     

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.     

Lending relationships in the interbank market

We use a unique dataset to show that relationships are an important determinant of banks' ability to access interbank market liquidity. More precisely, we find that: (i) banks with a larger reserve imbalance are more likely to borrow funds from banks with whom they have a relationship, and to pay a lower interest rate than otherwise; (ii) smaller banks and banks with more non-performing loans tend to have limited access to international markets, and rely more on relationships; (iii) relationships are established between banks with less correlated liquidity shocks. These results suggest that relationships allow banks to insure liquidity risk in the presence of market frictions such as transaction and information costs. Our analysis explicitly controls for the endogeneity of bank relationships.     

我国金融市场与流动性关联研究——基于VAR模型的实证分析

本文运用结构型多向量自回归模型SVAR揭示了M2的变动对金融子市场的整体影响,结果显示M2的变动能在约7个月后对各金融子市场达到影响最大化。脉冲模拟则显示M2的变动容易造成股票市场短期波动而长期影响却不明显,对银行间债券市场的流动性则影响显著,其预测误差贡献率达到28%,从侧面证明银行间债券市场流动性风险易集聚。进一步的模型检验证明：银行间债券市场存在正反馈交易情况最为强烈,发生流动性黑洞可能性大于其它市场。最后,本文对实证结果作了原因分析并提出建议。     

Monitoring and Controlling Bank Risk: Does Risky Debt Help?

We examine whether mandating banks to issue subordinated debt would enhance market monitoring and control risk taking. To evaluate whether subordinated debt enhances risk monitoring, we extract the credit‐spread curve for each banking firm in our sample and examine whether changes in credit spreads reflect changes in bank risk variables, after controlling for changes in market and liquidity variables. We do not find strong and consistent evidence that they do. To evaluate whether subordinated debt controls risk taking, we examine whether the first issue of subordinated debt changes the risk‐taking behavior of a bank. We find that it does not.     

What slice of the pie? The corporate bond market boom in emerging economies

This paper studies the determinants of shifts in debt composition among emerging market non-financial corporates. We show that the determinants of bond market access in EMs vary with global cyclical conditions and across local and foreign currency markets. We find that the role for institutions and macro fundamentals in creating an enabling environment for markets increased during the post-crisis period for local currency markets. Foreign bank linkages additionally explain why local currency bond markets increasingly substituted for banks in channeling liquidity to EMs. In the case of foreign currency markets, in turn, global cyclical factors accounted for most of the variation. Furthermore, a country’s relative sensitivity to global factors appears to vary with the size of its foreign currency bond market rather than local fundamentals. Our results highlight the risk of capital flow reversal in those EMs that benefited from the upturn in the global financial cycle mostly due to the relative size of their bond markets rather than strong fundamentals.     

市场模式、政府模式与城商行流动性风险化解—一个三期博弈的分析框架

分析城商行流动性风险化解中的政府手段和市场机制,对于下一步规范城商行营商环境、化解流动性风险具有参考意义。本文首先通过银行间的博弈模型,发现政府持股比例越高会增加城商行同业负债比例,进而提高流动性风险发生的可能性;当经济处于下行周期时,全社会资金需求不足,大型银行资金投放的机会成本降低,有利于城商行获得同业负债,但却进一步积累了流动性风险。其次,通过系统GMM对2011—2018年80家城商行的非平衡面板数据进行分析,实证结果验证了理论假说。最后,结合理论与实证分析,进一步提出政府行为边界,破除隐性担保,建立城商行资金内部定价机制以及完善城商行监管体系等方面的政策建议。     

The relationship between liquidity risk and credit risk in banks

This paper investigates the relationship between the two major sources of bank default risk: liquidity risk and credit risk. We use a sample of virtually all US commercial banks during the period 1998–2010 to analyze the relationship between these two risk sources on the bank institutional-level and how this relationship influences banks’ probabilities of default (PD). Our results show that both risk categories do not have an economically meaningful reciprocal contemporaneous or time-lagged relationship. However, they do influence banks’ probability of default. This effect is twofold: whereas both risks separately increase the PD, the influence of their interaction depends on the overall level of bank risk and can either aggravate or mitigate default risk. These results provide new insights into the understanding of bank risk and serve as an underpinning for recent regulatory efforts aimed at strengthening banks (joint) risk management of liquidity and credit risks.     

Bank size, market concentration, and bank earnings volatility in the US

We examine whether bank earnings volatility depends on bank size and the degree of concentration in the banking sector. Using quarterly data for non-investment banks in the United States for the period 2004Q1-2009Q4 and controlling for the quality of management, leverage, and diversification, we find that bank size reduces return volatility. The negative impact of bank size on bank earnings volatility decreases (in absolute terms) with market concentration. We also find that larger banks located in concentrated markets have experienced higher volatility during the recent financial crisis.     

结售汇如何影响银行风险承担水平?——基于银行资产负债表的视角

本文构建了一个基于银行资产负债表的理论模型,研究了结售汇对银行风险承担水平的影响机制,并采用结售汇报表数据进行实证检验。结果表明,为实现利润最大化,银行会将外汇流入创造的流动性用于投放较高风险的贷款,导致净结汇对银行风险承担水平有正向影响,异质性分析结果显示大型银行受影响程度高于中小银行。本文结论意味着,当考虑结售汇波动可能进一步加剧时,有必要出台更多结构性政策,补足外汇流入减少带来的货币缺口,优化存款市场结构,稳定金融机构流动性预期,以缓冲外需冲击可能带来的影响,并激励银行服务重心进一步下沉,为小微企业提供更多信贷支持,完成好金融服务实体经济的重要使命。     

The impacts of risk-taking behaviour and competition on technical efficiency: Evidence from the Chinese banking industry

This paper tests the impact of risk and competition on efficiency in the Chinese banking industry over the period 2003–2013. Comprehensive types of risk-taking behaviour are considered including credit risk, liquidity risk, capital risk, and insolvency risk. Competition is measured by the Lerner index. The results are cross-checked using an alternative econometric technique as well as an alternative competition indicator. The findings show that the technical and pure technical efficiencies of Chinese commercial banks are significantly and negatively affected by liquidity risk. They further show that greater competition precedes declines in technical and pure technical efficiencies of Chinese commercial banks. The results suggest that Chinese bank efficiency is significantly affected by bank diversification, banking sector development, stock market development, inflation and GDP growth rate. The findings also indicate that, compared to state-owned commercial banks, joint-stock commercial banks and city commercial banks have lower technical and pure technical efficiencies.     

Does foreign bank penetration affect the risk of domestic banks? Evidence from emerging economies

We investigate whether foreign bank penetration affects the risk of domestic banks in emerging economies. By using bank-level data from 35 markets during the period of 2000–2014, we find significant evidence that the risk of domestic banks increases with the presence of foreign banks in the host economy, and this finding is shown to be consistent in a series of robustness tests. We also find that the incidence of such effects is more pronounced for domestic banks which are less efficient and less based on traditional activities. Foreign banks exert more pronounced impacts on domestic banks’ risk when they enter the host market via M&A, as opposed to greenfield investments, and when they belong to foreign conglomerates which provide strong internal support.     

Do non-traditional banking activities reduce bank liquidity creation? Evidence from Vietnam

The study analyzes the impact of engaging in non-traditional banking activities on bank liquidity creation. This strand of research has almost gone unnoticed by academics so far. Based on a dataset of Vietnamese commercial banks from 2007 to 2018, we document that the liquidity creation function of banks decreases with the income from non-traditional banking segments. This impact is observed in both on- and off-balance sheets across multiple robustness tests of the static and dynamic panels regressed by the ordinary least squares method and the generalized method of moments. Further decomposing the non-interest income sources, we find that banks that engage more in non-traditional activities for fees and commissions tend to reduce the liquidity creation more compared to other counterparts. The findings offer insightful implications for regulatory agencies and bank managers in the determination of liquidity creation behavior in emerging markets.     

The Cross‐Market Spillover of Economic Shocks through Multimarket Banks

This study investigates the mortgage lending of banks operating in multiple U.S. metropolitan areas during the housing market collapse of 2007–09. We show that multimarket banks reduced local portfolio lending in response to high overall mortgage delinquencies in their other markets, consistent with the view that local economic shocks can be transmitted to other regions through banks’ internal capital markets. This spillover was greatest when the bank lacked a branch presence and when the market was highly peripheral to the bank in terms of its total mortgage lending. These effects were not fully offset by securitization or other portfolio lenders.     

Money and liquidity in financial markets

We argue that there is a connection between the interbank market for liquidity and the broader financial markets, which has its basis in demand for liquidity by banks. Tightness in the market for liquidity leads banks to engage in what we term “liquidity pull-back,” which involves selling financial assets either by banks directly or by levered investors. Empirical tests on the stock market are supportive. Tighter interbank markets are associated with relatively more volume in more liquid stocks; selling pressure, especially in more liquid stocks; and transitory negative returns. We control for market-wide uncertainty and in the process also contribute to the literature on portfolio rebalancing. Our general point is that money matters in financial markets.     

宏观流动性过剩与商业银行流动性风险管理

流动性过剩是近年来全球宏观经济领域的一个显著特征。在此背景下,商业银行流动性管理遇到了新的挑战。商业银行资金来源更加依赖金融市场,市场上的任何风吹草动都会影响到商业银行的流动性,甚至出现从流动性过剩到流动性不足的突然转化。有效管理商业银行流动性需要各国中央银行、金融监管者以及商业银行经营者的共同努力。     

The conditioning role of performance on the bank risk-taking channel of monetary policy: Evidence from a multiple-tool regime

The study investigates how monetary policy affects bank risk-taking under a multiple-tool regime of Vietnam during 2007–2018. Particularly, we also consider the conditioning role of bank performance, broken down by bank profitability and cost efficiency, in this nexus. Using both dynamic and static panel models, we show that the liquidity injection initiated by the central bank’s asset purchases induces banks to take more risks, captured by the traditional Z-score and two alternative measures of credit risk. However, monetary policy easing through decreased interest rates is beneficial to the credit portfolio and financial stability of banks, which therefore challenges the functioning of the bank risk-taking channel. This startling result is robust across three different interest rate measures, including lending rates, refinance rates and rediscount rates. Further analysis reveals that our observed effects are alleviated for banks with higher performance — i.e., more profitable and efficient banks. This in-depth finding offers more insights into the “search for yield” incentive, based on the theory of information asymmetry and the two competing hypotheses of “bad management” and “cost skimping”.