市场结构、资本管制与银行冒险行为

针对资本管制对商业银行冒险行为的管制效应,本文从理论上推导出资本管制在银行业不同市场结构中作用机理不同,并提出"资本管制效应"假说。然后利用61个国家421家银行数据进行实证检验,研究发现:在集中度低的市场中,商业银行特许权价值低,具有为增加特许权价值银行采取冒险策略的动机,资本管制能有效减轻其风险行为;而在高集中度市场里,对银行冒险行为管制效果不明确。考虑到金融业发展、法律效应及国家和银行其它相关潜在因素的影响,结论仍然保持不变。     

Cyclical behavior of the financial stability of eurozone commercial banks

In light of the financial crisis and the European sovereign debt crisis, we investigate the cyclical behavior of the financial stability of banks of the Eurozone, using an unbalanced dynamic panel of 722 commercial banks covering the period 1999–2013, and the generalized method of moments system. We find a negative relationship between business cycle and bank risk-taking, indicating that financial stability is procyclical. In addition, the study shows that lending activity increases risk-taking while rising capital requirements boost financial stability. Moreover, our findings suggest positive co-movements between the business cycle and lending, compared to bank's capital, whereby the procyclicality of lending and bank capital have negative effects on the financial stability of commercial banks in the Eurozone. We notice then that the cyclical behavior of commercial banks, in terms of capital requirements and lending activities, depends on their size. Therefore, lending and capital of smaller banks are procyclical while lending and capital of larger banks are countercyclical. Finally, we find the Troika institutions’ bailouts programs significantly impacted banking stability in the Eurozone.     

公司治理与银行风险承担行为——基于我国上市商业银行的研究

以我国13家上市商业银行为样本,利用2001--2012年的半年度数据,采用非平衡面板模型对我国上市商业银行公司治理与风险承担行为之间的关系进行实证研究。结果表明,股权集中度与银行风险承担呈显著的倒u型关系;第一大股东的政府性质能够约束商业银行的冒险行为;高管人员薪酬越高时,银行的风险承担越小;而董事会规模和董事会独立性等董事会治理因素并没有对银行的风险承担行为产生显著影响。     

中国商业银行规模、治理与风险承担的实证研究

基于2000-2010年中国13家商业银行的非平衡面板数据对中国商业银行规模、银行治理与风险承担关系进行的实证研究,结果表明银行规模与风险承担呈U形关系;银行治理水平与风险承担呈负向关系;大型商业银行治理引起的风险承担比股份制商业银行高。因此,必须适当限制商业银行的规模扩张,加强商业银行的安全网建设,加大对大型、系统重要性商业银行的监管力度,提高商业银行尤其是大型商业银行的治理水平。     

Financing Channels and Monetary Policy in a Dual Banking System: Evidence from Islamic Banks in Indonesia

Using Indonesian Islamic banking data from 2003 to 2014, this article employs a panel regression methodology to investigate the responses of Islamic banks to changes in financing rates and monetary policy, which may differ depending on their characteristics. The results suggest that the financing rate has a negative impact on financing at Islamic banks, while bank‐specific characteristics have a positive influence on it. The size and amount of capital have a greater impact than liquidity on financing at Islamic banks. However, changes in monetary policy are insignificant on bank financing, which implies that the transmission of monetary policy through the Islamic segment of the banking sector is weak. Furthermore, the weak impact of monetary policy on bank financing can be explained by the dramatic expansion of Islamic banks during the sample period, which contributed to a substantial increase in deposit growth and a high liquidity position.     

Management Behaviour in Vietnamese Commercial Banks

This study identifies managerial behaviour in Vietnamese banks between the years 2000 and 2014, based on the managerial framework of banks, as identified by Rossi et al. ( 2009 ). This framework is built on the interrelationships between efficiency, risk, capital and diversification. This study uses the Z‐score to measure insolvency risk, the SFA to estimate cost efficiency, the ratio of total equity to total assets to capture bank capital and the HHI index to measure the diversification of revenue and earning assets. The results from the 3SLS estimator indicate that revenue diversification has an insignificant impact on insolvency risk, capital ratio and cost efficiency, but earning assets diversification has a negative effect on these three variables, supporting ‘classical diversification’, ‘economic capital’ and ‘monitoring’ behaviours. Moreover, a decline in cost efficiency leads to a rise in insolvency risk, implying ‘bad management’ behaviour; an increase in risk results in a reduction in cost efficiency, indicating ‘bad luck’ behaviour; and a reduction in capital ratio in the poorly capitalised banks leads to a growth in risk, suggesting ‘moral hazard’ behaviour. The results remain strongly robust when using an alternative risk measurement (the loan loss provision ratio) and an alternative SFA model.     

货币政策对金融生态的影响机理及实证检验——基于上市商业银行面板数据的分析

传统的货币理论忽视了货币政策对银行风险承担及金融生态的影响,文章从商业银行的微观视角出发研究了货币政策对金融生态的影响机理。理论层面,金融生态与货币政策制度供给、传导机制和有效性相互关联,货币政策则通过资产价格或估值机制、收入及现金流机制、追求收益机制、杠杆调整机制、道德风险机制和风险转移机制影响商业银行的风险承担;实证层面,构建了货币政策影响商业银行信贷投放和风险承担的数理模型,选取国有和股份制两类共12家上市商业银行2008-2013年的面板数据进行固定效应模型实证检验。结果表明,宽松货币政策导致商业银行的信贷投放规模增加、风险承担意愿增强,有利于优化金融生态,反之则反是;国有商业银行对货币政策变化更敏感,而股份制商业银行对金融生态更敏感。因此,在我国宏观经济管理中,需要货币政策与宏观审慎政策相互协调配合。     

非利息收入和银行规模对其风险的影响——基于中国16家上市银行的实证分析

利用2003—2012年中国16家上市商业银行的面板数据,对其非利息收入和规模与其所承担风险的关系进行实证研究。结果表明:中国商业银行的非利息收入与银行风险并不显著关联,其原因可能在于中国商业银行的非利息收入与净利息收入高度相关;银行规模与银行风险之间的关系曲线呈U形。提出:中国商业银行应发展和创新非利息收入业务以降低对利息收入业务的依赖;中国政府监管部门应适当限制商业银行的规模扩张。     

Determinants of income diversification: evidence from Chinese banks

This article presents an analysis of the determinants of Chinese commercial banks’ income diversification decisions. Using a panel dataset comprising 88 Chinese domestic banks from 2003 to 2010, we find that bank diversification reflects a variety of managerial abilities: insolvency risks, cost, capital position, asset scale and ownership structure. A larger ratio of banking assets to gross domestic product and lower interest spread lead to a higher level of diversification. Moreover, national banks and regional banks have different strategic responses to the macroeconomic, and indeed, regulatory environment. Resisting shocks from the banking sector and the macro economy, and supplementing liquidity shortages from intermediation business seem to be the driving forces of national banks to operate in non-banking sectors.     

Banking deregulation and allocative efficiency in Pakistan

This article examines the impact of deregulation policies on allocative efficiency of banks in Pakistan. It investigates whether deregulation has impacted the pattern of allocative efficiency of banks and explores which bank ownership segment has been more responsive. It uses data from 1991 to 2005 and explicitly models allocative inefficiency by using the translog shadow cost-share system. Empirical results show that overregulation and imperfect market structure hampers the ability of banks to make competitive decisions. We find evidence of allocative inefficiency leading to over-utilization of labour and deposits vis-à-vis operating cost. Empirical results for time-varying allocative efficiency show declining levels of allocative inefficiency for state-owned and private banks in post-reform period. Deregulation policies induce state-owned banks to decrease over-utilization of labour relative to deposits and operating cost while private banks succeed in using operating cost closer to optimal levels. Hence, policymakers have latitude to introduce more reforms without jeopardizing allocative efficiency.     

中国上市商业银行治理绩效的实证研究——来自沪深两市的经验证据

以中国沪深两市14家上市商业银行作为研究样本,使用其2007年度财务报告数据,运用最小二乘估计（OLS）方法,从股东、董事会和高级管理层三个维度对公司治理与经营绩效（ROA、NPL）之间的关系进行实证分析表明,国家控股、股权集中度和战略投资者对银行公司治理绩效不存在显著影响,内部执行董事比例、高管薪酬与其经营绩效呈负相关关系;而高管持股则和经营绩效存在正相关关系。     

Ex ante capital position,changes in the different components of regulatory capital and bank risk

We investigate the impact of changes in capital of European banks on their risk-taking behaviour from 1992 to 2006, a time period covering the Basel I capital requirements. We specifically focus on the initial level and type of regulatory capital banks hold. First, we assume that risk changes depend on banks’ ex ante regulatory capital position. Second, we consider the impact of an increase in each component of regulatory capital on banks’ risk changes. We find that, for highly capitalized, adequately capitalized and strongly undercapitalized banks, an increase in equity or in subordinated debt positively affects risk. Moderately undercapitalized banks tend to invest in less risky assets when their equity ratio increases but not when they improve their capital position by extending hybrid capital or subordinated debt. On the whole, our conclusions support the need to implement more explicit thresholds to classify European banks according to their capital ratios but also to clearly distinguish pure equity from hybrid and subordinated instruments.     

管理防御对公司业绩影响实证分析——来自中国上市公司的证据

在信息不对称和契约不完备的情况下,自利管理者与股东之间的利益冲突,引发了管理者固守职位并最大化自身效用的管理防御行为。本文从影响管理防御的管理者特征、管理者激励和管理者监督3个方面选择了8个变量,选取2003—2008年这6年连续上市的A股公司的面板数据,考察管理防御与公司业绩之间的关系。研究表明,管理者防御程度会对公司业绩产生负面影响,其中管理者年龄、管理者受教育水平、管理者薪酬和董事会独立性与上市公司业绩显著正相关,管理者任期、管理者持股比例对业绩有负面影响,股权集中度与公司业绩呈U型关系。     

Charter value,risk-taking and systemic risk in banking before and after the global financial crisis of 2007-2008

ABSTRACT

We investigate how bank charter value affects risk for a sample of OECD banks by using standalone and systemic risk measures before, during, and after the global financial crisis of 2007–2008. Prior to the crisis, bank charter value is positively associated with risk-taking and systemic risk for very large ‘too-big-too-fail’ banks and large U.S. and European banks but such a relationship is inverted during and after the crisis. A deeper investigation shows that such a behaviour before the crisis is mostly relevant for very large banks and large banks with high growth strategies. Banks’ business models also influence this relationship. We find that for banks following a focus strategy, higher charter value amplifies both standalone and systemic risk for large U.S. and European banks. Our findings have important policy implications and cast doubts on the relevance of the uniform more stringent capital requirements introduced by Basel III.     

经济政策不确定性、银行集中度与银行风险

本文基于2007—2018年30家上市商业银行季度面板数据,首次针对不同方面的银行风险,采用固定效应模型详细探讨经济政策不确定性、银行集中度与银行风险之间的关系。研究结果表明：（1）经济政策不确定性会加剧银行经营风险和信用风险,但会降低银行风险承担;（2）银行集中度的上升会导致银行经营风险和信用风险上升,但对银行风险承担的作用不显著;（3）集中度在经济政策不确定性对银行风险的影响中具有调节效应,随着银行集中度上升,经济政策不确定性会更加剧银行经营风险和信用风险,且会进一步减弱银行风险承担。本文采用不同的银行集中度变量并涵盖多种银行风险衡量指标的实证结果均稳健。进而笔者基于实证结果,在银行风险防控方面对政策制定者及监管部门提出一些建议。     

What Do Data Say About Monetary Policy,Bank Liquidity and Bank Risk Taking?

This paper tests empirically the linkage between banks' investment and interbank lending decisions in response to interest rate changes. We draw conclusions for the monetary policy, which uses the interest rate as its main tool. Across European countries we find that the risk-free (i.e. monetary policy) interest rate negatively affects the liquidity retained by banks and the decision of a bank to be a lender in the interbank market. Instead, the interbank interest rate has a positive impact on these decisions. We also find that banks who lend show less risk-taking behaviour and tend to be smaller than those who are borrowers. Most importantly, the risk-free interest rate is positively correlated with loans investment and bank risk-taking behaviour.     

Does ownership concentration affect banks’ credit risk? Evidence from MENA emerging markets

The purpose of this study is to explore the impact of ownership concentration on banks’ credit risk. The study employs a dynamic panel approach using data from 98 banks listed in the 10 Middle East and North African (MENA) emerging stock markets between 2003 and 2016. To better understand the nature of the relationship between ownership concentration and bank credit risk and how this relationship is shaped by the recent financial crisis, we conducted a pre- and postcrisis analysis. Our findings document a positive relationship between ownership concentration and nonperforming loans in the precrisis period, which surprisingly reverses during the postcrisis period. We argue that the reversal of this relationship is driven by changes in controlling shareholders’ risk aversion, behavior, and attitude prompted by the financial crisis. Given that central banks are entrusted with forestalling banks’ failure, incorporating ownership concentration, as a fundamental determinant of banks’ credit risk, is crucial to anticipate future financial calamities. Our findings highlight the gravity of agency problems in emerging MENA markets. Reinforcing firm-level as well as country-level governance mechanisms is crucial to restore a sound banking system, enhance markets’ integrity, and increase investors’ confidence.     

Competition Among Banks, Capital Requirements and International Spillovers

The design of prudential bank capital requirements interacts with the industrial organization of the banking sector, in particular, with the level of competition among banks. Increased competition leads to excessive risk-taking by banks which may have to be counteracted by tighter capital requirements. When capital requirements are internationally uniform but the levels of competition among banks in different countries are not, international spillovers arise on financial integration of these countries. This result begs a more careful analysis of the effect of financial liberalization on the stability of banking sectors in emerging countries. It also calls into question the merits of employing uniform capital requirements across countries that diverge in the industrial organization of their banking sectors.
(J.E.L.: G21, G28, G38, F36, E58, D62)     

Does a one-size-fits-all approach to financial regulations alleviate default risk? The case of dual banking systems

Financial regulations are developed to curb financial and economic fragility costs without undermining the economic contributions of banks to economic development. To understand the impact financial regulations have on reducing the financial fragility of banks we use the probability-of-default of banks as a proxy for bank failure. After analyzing data collected from 15 countries with a dual banking system for the period 2000–2015, we find convincing evidence that not all financial regulations have risk-reducing benefits for banks and the impact of financial regulations on default risk is not the same for conventional banks (CBs) and Islamic banks (IBs). The empirical evidence suggests that regulations that lessen overall default risk have a greater impact on IBs while those increasing default risk have a greater impact on CBs. Based on our findings we recommend that regulators should consider the different natures of CBs and IBs and tailor financial regulations to suit these operationally distinct financial intermediaries.     

股权结构、治理机制与城市银行绩效--来自山东、河南两省的调查证据

银行体系的重要地位和银行危机的频繁发生显示了加强银行公司治理的重要性 ,在我国银行体制改革的背景下 ,研究商业银行公司治理问题具有重要的现实意义。本文利用山东、河南两省 2 8家城市银行的调查样本对我国地方商业银行的股权结构、治理机制及其效果进行了实证分析。结果发现 ,虽然我国地方性银行国有和集中的股权结构特征明显 ,但大股东的国有性质并没有对银行绩效产生影响 ,同时集中型股权结构对银行绩效有明显的积极影响。银行高管人员薪酬有较明显的负激励效果。此外我们还发现 ,外部董事比例和银行规模基本没有对银行绩效产生影响 ,而且山东、河南两省城市银行在公司治理方面也不存在省际间的显著差异。