公司治理、资本监管与银行风险承担

选取2007-2017年中国25家上市银行数据,采用面板回归模型对公司治理与资本监管对银行风险承担的影响进行实证分析。研究表明：股权集中度与银行风险承担之间呈正U型关系,较低的股权集中度会降低银行风险资产配置权重,股权集中度的提升会加大银行风险承担。董事会规模会促进银行风险承担,董事会规模过大将平滑单个董事表决权,导致董事会控制效率下降而引发银行经营决策频繁变动,由此加大银行风险承担。资本监管会抑制银行风险承担,资本监管的趋严促使银行减持风险资产进行资本补充;资本监管对股份制银行、国有大型银行与城农商银行风险承担的影响力度依次递减。货币供给增速的放缓将降低银行存款吸收能力,由此加大银行流动性风险,货币供给对银行信贷存在制约效应;经济增速的下调将降低企业盈利能力,由此加大银行风险承担,银行存在顺周期放贷倾向。     

Interest rates and bank risk-taking

A recent line of research views the low interest-rate environment of the early to mid 2000s as an element that triggered increased risk-taking appetite of banks in search for yield. This paper uses approximately 18000 annual observations on euro area banks over the period 2001-2008 and presents strong empirical evidence that low-interest rates indeed increase bank risk-taking substantially. This result is robust across a number of different specifications that account, inter alia, for the potential endogeneity of interest rates and/or the dynamics of bank risk. Notably, among the banks of the large euro area countries this effect is less pronounced for French institutions, which held on average a relatively low level of risk assets. Finally, the distributional effects of interest rates on bank risk-taking due to individual bank characteristics reveal that the impact of interest rates on risk assets is diminished for banks with higher equity capital and is amplified for banks with higher off-balance sheet items.     

The effect of TARP on bank risk-taking

One of the largest responses of the US government to the recent financial crisis was the Troubled Asset Relief Program (TARP). TARP was originally intended to stabilize the financial sector through the increased capitalization of banks. However, recipients of TARP funds were then encouraged to make additional loans despite increased borrower risk. In this paper, we consider the effect of the TARP capital injections on bank risk-taking by analyzing the risk ratings of banks’ commercial loan originations during the crisis. The results indicate that, relative to non-TARP banks, the risk of loan originations increased at large TARP banks but decreased at small TARP banks. Loan levels also moved in different directions for large and small banks and, in supporting evidence, these effects are evaluated based on loan size and TARP repayment. For large banks, the increase in risk-taking without an increase in lending is suggestive of moral hazard due to government support. These results may also be due to the conflicting goals of the TARP program for bank recapitalization and bank lending.     

Does the ownership structure matter for banks’ capital regulation and risk-taking behavior? Empirical evidence from a developing country

This paper applies the two-stage least squares (2SLS) estimator to examine the bi-directional relationship between banks’ capital regulation and risk-taking behavior concerning the impact of ownership structure. We have used a balanced panel dataset of banks from a developing country over the most recent period between 2006 and 2014. The empirical findings of this study suggest that higher capital regulation enhances banks’ stability when it combats with credit risk but higher credit risk often persuades abating capital ratio. Particularly, the key results are as follows: (i) the higher association of minority active shareholding in stability issues is positive; (ii) the higher contribution of active share holding promotes banks’ capital ratio; (iii) the lower ownership concentration prevents credit risk; (iv) private commercial banks are more risk averse and stable than state-owned banks and other type of banks; and (v) notably, Islamic banks show their superiority through overall performance despite their lower capital stability than conventional banks. Besides, no models show significant non-linear relationship between capital regulation and risk-taking except models of stability show a U-shaped relation in capital equation, indicating that when regulatory pressure works in a country then bank lose solvency at the initial stage. Finally, it also provides some imperative policy implications which will be very useful for a wide range of stakeholders.     

CEO pay incentives and risk-taking: Evidence from bank acquisitions

We analyze how the structure of executive compensation affects the risk choices made by bank CEOs. For a sample of acquiring U.S. banks, we employ the Merton distance to default model to show that CEOs with higher pay-risk sensitivity engage in risk-inducing mergers. Our findings are driven by two types of acquisitions: acquisitions completed during the last decade (after bank deregulation had expanded banks' risk-taking opportunities) and acquisitions completed by the largest banks in our sample (where shareholders benefit from ‘too big to fail’ support by regulators and gain most from shifting risk to other stakeholders). Our results control for CEO pay-performance sensitivity and offer evidence consistent with a causal link between financial stability and the risk-taking incentives embedded in the executive compensation contracts at banks.     

Monetary policy,ownership structure,and risk-taking at financial intermediaries

This paper examines how ownership structure interacts with monetary policy in shaping financial intermediaries' appetite for risk. By constructing a large panel of banks across Western Europe, we provide evidence that differences in bank ownership influence the transmission of monetary policy via the risk-taking channel. While shareholder banks actively adjust the riskiness of their portfolios to changes in interest rates, stakeholder banks appear to be less responsive to such changes. These findings call for greater attention to the nature of bank ownership when setting monetary policy.     

Post-privatization state ownership and bank risk-taking: Cross-country evidence

We examine the relation between state residual ownership and bank risk-taking for privatized banks from 45 countries. Applying propensity score matching, we find that privatized banks tend to exhibit higher levels of risk-taking post-privatization than their publicly listed non-privatized counterparts. Moreover, partially privatized banks exhibit higher levels of risk-taking than fully privatized banks. We also observe a positive and significant relation between the level of residual state ownership and risk-taking. These findings are consistent with the distorted objectives associated with government control, as suggested by the political benefits of control, and with the soft budget constraint views of state ownership. The distortion can be mitigated by the quality of a country's institutional and regulatory environments. Finally, our results show that the effect of state ownership on risk-taking is more pronounced in countries with a higher dominance of state-owned enterprises, and it was more prevalent during the global financial crisis.     

Auditor choice and bank risk taking

We investigate the importance of auditor choice on bank risk-taking in a cross-country setting for 5498 banks from 116 emerging and developed countries. Using the Z-score as our main proxy for bank risk, we report evidence that hiring a Big Four auditing firm reduces bank-risk even after controlling for bank and country variables. The reported evidence is valid for banks outside the United States and is robust to concerns relating to endogeneity and alternative banking risk measures. The results are economically meaningful. All else constant, the Z-score of a bank audited by a Big Four firm is 10.4% higher than a similar bank with a non-BIG Four auditor. Moreover, consistent with the view that Big Four auditors serve a corporate governance mechanism in emerging markets, we find that Big Four auditors maintain the ability to curb bank risk in countries characterized by weak institutions. Finally, our results suggest that while audit quality is associated with bank safety, its impact is reduced in countries that require audit-oversight.     

Loan Market Competition and Bank Risk-Taking

Recent literature (Boyd and De Nicoló, J Finance 60:1329–1343, 2005) has argued that competition in the loan market lowers bank risk by reducing the risk-taking incentives of borrowers. Using a model where competition arises from falling switching costs for entrepreneurs, we show that the impact of loan market competition on banks is reversed if banks can adjust their loan portfolios. The reason is that when borrowers become safer, banks want to offset the effect on their balance sheet and switch to higher-risk lending. They even overcompensate the effect of safer borrowers because loan market competition erodes their franchise values and thus increases their risk-taking incentives.     

Deposit insurance coverage,ownership, and banks' risk-taking in emerging markets

We ask how deposit insurance systems and ownership of banks affect the degree of market discipline on banks' risk-taking. Market discipline is determined by the extent of explicit deposit insurance, as well as by the credibility of non-insurance of groups of depositors and other creditors. Furthermore, market discipline depends on the ownership structure of banks and the responsiveness of bank managers to market incentives. An expected U-shaped relationship between explicit deposit insurance coverage and banks' risk-taking is influenced by country specific institutional factors, including bank ownership. We analyze specifically how government ownership, foreign ownership and shareholder rights affect the disciplinary effect of partial deposit insurance systems in a cross-section analysis of industrial and emerging market economies, as well as in emerging markets alone. The coverage that maximizes market discipline depends on country-specific characteristics of bank governance. This “risk-minimizing” deposit insurance coverage is compared to the actual coverage in a group of countries in emerging markets in Eastern Europe and Asia.     

货币政策和银行风险承担：一种非线性关系

宽松的货币政策会通过估值、收入和现金流机制,追逐收益机制以及中央银行沟通和反应机制等渠道增加银行风险承担,通过风险转移机制降低银行风险承担,从而导致货币政策与银行风险承担之间可能存在复杂的非线性关系。本文使用面板阈值模型,基于我国银行业数据研究了货币政策对银行风险承担的影响,发现我国货币政策对银行风险承担的影响存在门限效应,即货币政策对银行风险承担的影响取决于货币政策基准利率偏离泰勒规则利率的程度。当这种偏离小于门限值时,宽松货币政策会增加银行风险承担;当这种偏离大于门限值时,宽松货币政策会降低银行风险承担。本文研究对更好地理解我国货币政策对银行风险承担及金融稳定的影响有一定参考意义。     

The role of strategic interactions in risk-taking behavior: A study from asset growth perspective

This study uses panel data on Vietnamese commercial banks from 2008 to 2018 in order to investigate the role of strategic interactions in determining bank risk-taking behavior by considering bank asset growth. The results suggest that aggressive competition is less favorable for banks striving for stability and that a high value of competitive strategy measure (as a proxy for strategic interactions) encourages risk-taking incentives. We also find that the distributional effects of strategic interaction on bank risk-taking because of asset growth reveal that the uncertainty in strategic-interaction-driven profits diminishes in banks with higher growth. This finding is consistent with the idea that when competition becomes more aggressive, bank restructuring should focus on increasing total assets by merging and acquiring small- and medium-sized banks to stabilize the banking sector. Furthermore, the results demonstrate that banks with low leverage or under regulatory pressure engage in more risk-taking. Therefore, policymakers may not implement a tighter capital requirement that contributes to a heightened level of risk. The results are robust to alternative measures of risk-taking and monetary policy stance as well as different econometric specifications.     

Muslim CEOs and bank risk-taking: Evidence from Indonesia

This study investigates the relationship between Muslim CEOs and bank risk-taking based on Indonesian banks from 2010 to 2017. We find that there is no significant difference in risk-taking among Indonesian banks based on whether the banks have Muslim CEOs or not. However, we find that only state-owned banks with Muslim CEOs display significantly low risk-taking. We further find that foreign-owned banks with Muslim CEOs display a significant low risk-taking only in the presence of Muslim-dominated boards. We show that Muslims must be in the majority on 2-tier boards (board of directors and board of commissioners) to significantly influence Muslim CEOs' risk-taking. In addition, we find no related evidence from family-owned firms. Further analysis reveals that banks with a low concentration of ultimate ownership indicate Muslim CEOs' low risk-taking behaviour, and vice versa.     

Bank reforms,foreign ownership,and financial stability

Numerous studies have focused on foreign ownership of banks, but instead of linkages to financial stability, they typically analyzed other issues and used country-level data. This article fills the gap in the literature by applying the GMM techniques on dynamic panels using bank-level data for Asian countries to investigate the impact of foreign ownership on financial stability, as well as whether the relation between foreign ownership and stability changes under different conditions of bank reforms in the host country. Specifically, we reach five conclusions. First, the existence of the home field advantage hypothesis is supported; nevertheless, when considering the effects of bank reforms, the global advantage hypothesis holds. Second, an inverse U-shaped relation between foreign ownership and stability is supported. Third, a higher degree of credit control liberalization mitigates the negative effect of foreign ownership on stability. Fourth, liberalization of interest rate control and banking supervision do enhance stability. Fifth and finally, we confirm a significantly negative relation between an explicit deposit and stability.     

The Effects of the Sharing Economy: How Does Internet Finance Influence Commercial Bank Risk Preferences?

In this article, we provide an evidence on the effects of the sharing economy by studying internet finance. It aims to explore how internet finance affects the relationship between commercial bank risk preferences and monetary policy, and discusses whether this impact varies across heterogeneous banks. The results suggest that having a loose monetary policy encourages a preference for risk. In addition, internet finance alters the sensitivity of bank risk behavior to monetary policy. Internet finance has a heterogeneous influence, depending on a bank’s ownership (i.e., state or private) and size. At privately owned banks, internet finance has only a moderate impact on the bank risk-taking transmission channel of monetary policy, unlike the subsample of large banks.     

Quantifying and explaining parameter heterogeneity in the capital regulation-bank risk nexus

By examining the impact of capital regulation on bank risk-taking using a local estimation technique, this paper attempts to quantify for the first time the heterogeneous response of banks towards this type of regulation in banking sectors of western-type economies. Subsequently, using this information, we examine the sources of heterogeneity. The findings suggest that the impact of capital regulation on bank risk is very heterogeneous across banks and the sources of this heterogeneity can be traced into both bank and industry characteristics, as well as into macroeconomic conditions. An important implication of the findings is that common capital regulatory umbrellas are not sufficient to promote financial stability, especially if they are not accompanied by supervisory effectiveness. On the basis of our findings, we contend that more focus should be placed on the actions needed to restrain excessive risk-taking of banks.     

Credit unions vs. commercial banks,who takes more risk?

A unique feature of the financial services industry is that both shareholder-owned banks and member-owned credit unions coexist and compete against each other. In this study, we investigate two research questions. First, we compare risk-taking by banks and credit unions, with an additional consideration as to how regulatory oversight (state or federal) relates to such risk-taking. Second, we examine how competition affects the difference in risk-taking between these two types of financial institutions. To answer both questions, we rely on a matched sample (by loan type, size, and county) of commercial banks and credit unions, covering the period between 2010 and 2017. We use three empirical proxies for risk-taking, the Z-score, measuring an institution’s insolvency risk, as well as the ratios of non-performing loans to total loans and loan charge-offs to total loans, measuring the credit risk. Our results suggest that banks tend to engage in more risk-taking than credit unions; however, state regulatory oversight reduces the risk-taking gap, especially in terms of the Z-score. We further find that competition induces different risk-taking behaviors in banks and credit unions. Our results are robust to several alternative specifications.     

How Theories of Financial Intermediation and Corporate Risk-Management Influence Bank Risk-Taking Behavior

This paper examines the rationales for risk-taking and risk-management behavior from both a corporate finance and a banking perspective. After combining the theoretical insights from the corporate finance and banking literatures related to hedging and risk-taking, the paper reviews empirical tests based on these theories to determine which of these theories are best supported by the data. Managerial incentives are the most consistently supported rationale for describing how banks manage risk. In particular, moderate/high levels of equity ownership reduce bank risk while positive amounts of stock option grants increase bank risk-taking behavior. The review of empirical tests in the banking literature also suggests that financial intermediaries coordinate different aspects of risk (e.g., credit and interest rate risk) in order to maintain a certain level of total risk. The empirical results indicate hedgeable risks such as interest rate risk represent only one dimension of the risk-management problem. This implies empirical tests of the theories of corporate risk-management need to consider individual sub-components of total risk and the bank's ability to trade these risks in a competitive financial market. This finding is consistent with the reality that banks have non-zero expected financial distress costs and bank managers cannot fully diversify their bank-related personal investments.     

Do subordinated debt holders discipline bank risk-taking? Evidence from risk management decisions

I test the market discipline of bank risk hypothesis by examining whether banks choose risk management policies that account for the risk preferences of subordinated debt holders. Using around 500,000 quarterly observations on the population of U.S. insured commercial banks over the 1995–2009 period, I document that the ratio of subordinated debt affects bank risk management decisions consistent with the market discipline hypothesis only when subordinated debt is held by the parent holding company. In particular, the subordinated debt ratio increases the likelihood and the extent of interest rate derivatives use for risk management purposes at bank holding company (BHC)-affiliated banks, where subordinated debt holders have a better access to information needed for monitoring and control rights provided by equity ownership. At non-affiliated banks, a higher subordinated debt ratio leads to risk management decisions consistent with moral hazard behavior. The analysis also shows that the too-big-to-fail protection prevents market discipline even at BHC-affiliated banks.     

Can Banks in Emerging Economies Benefit from Revenue Diversification?

This paper investigates the effect of revenue diversification on bank performance and risk. Using a panel dataset of 226 listed banks across 11 emerging economies and a new methodological approach, System Generalized Method of Moments estimators (System GMM), the results in this paper provide empirical evidence of the impact of the observed shift towards non-interest income generating activities on insolvency risk and bank performance. The core finding is that diversification across and within both interest and non-interest income generating activities decrease insolvency risk and enhance profitability. The results also show that these benefits are largest for banks with moderate risk exposures. By extension, these results have significant strategic implications for bank managers, regulators and supervisors who share a common interest in boosting bank performance and stability.