关于我国利率和利率传导关系的思考

当前我国银行体系利率大致可分为货币市场利率和信贷市场利率,其中由央行指定的利率主要有存贷款基准利率、再贴现率等。在货币市场上,隔夜同业拆借利率具有基准利率的地位。在信贷市场上,在特定时期,保持适当的存贷款利差具有积极意义。由于一些阻碍信贷市场与货币市场统一的制度安排的存在,这两个市场间的利率传导呈现出一定的不对称性。为推进利率市场化,进一步完善我国利率体系,下一步应逐步弥合市场分割,加强货币市场基准利率建设,培育商业银行利率定价能力。     

2010年3季度银行间市场运行报告

2010年第三季度,银行间市场创新频出、整体运行平稳。银行间外汇市场引入人民币兑林吉特交易,支持跨境贸易人民币结算业务的发展;人民银行发布通知允许境外人民币清算行等三类机构进入银行间债券市场,拓宽人民币回流渠道;银行间市场贷款转让业务上线交易,丰富银行业金融机构主动管理资产的手段。第三季度,货币市场资金面复杂多变,短期货币市场利率波动明显,市场交易大幅增长;银行间国债指数继续上行,债券交易增长明显;外汇市场上人民币汇率连创新高,价格波动较大,市场交易趋于谨慎;利率和汇率衍生品市场整体保持较快发展。     

我国商业银行贷款定价方法探讨

随着利率市场化进程的加快,我国商业银行的贷款定价体系面临着越来越严峻的考验。为了适应利率市场化的需要,应该改进国内现有的贷款定价方法,建立一个“以贷款平均收益率为基准利率,兼顾贷款风险溢价以及银行与客户整体关系”的贷款定价模型。     

Liquidity Crunch in the Interbank Market: Is it Credit or Liquidity Risk, or Both?

The interplay between liquidity and credit risks in the interbank market is analyzed. Banks are hit by idiosyncratic random liquidity shocks. The market may also be hit by bad news at a future date, implying the insolvency of some participants and creating a lemons problem; this may end up with a gridlock of the interbank market at that date. Anticipating such possible contingency, banks currently long of liquidity ask a liquidity premium for lending beyond a short maturity, as a compensation for the risk of being short of liquidity later and being forced to liquidate some illiquid assets. When such premium gets too high, banks currently short of liquidity prefer to borrow short term. The model is able to explain some stylized facts of the 2007–2009 liquidity crunch affecting the money market at the international level: (i) high spreads between interest rates at different maturities; (ii) “flight to overnight” in traded volumes; (iii) ineffectiveness of open market operations, leading the central banks to introduce some relevant innovations into their operational framework.     

Interbank market failure and macro-prudential policies

This paper analyses the effects of several macro-prudential policy measures on the banking sector and its linkages to the macroeconomy. We employ a dynamic general equilibrium model with sticky prices, in which banks trade excess funds in the interbank lending market. We find that an increase in the liquidity requirement effectively reduces the impact of an interbank shock on the real and financial sector, while an increased capital requirement propagates only through nominal variables as inflation and interest rates. We conclude that stricter liquidity measures which limit inside money creation, dampen the severity of a breakdown in interbank lending. Targeting interbank financing directly through liquidity measures along with a moderate capital requirement generates lower welfare losses. We thereby provide a comprehensive rationale in favor of the regulatory measures in Basel III.     

The banking industry under uncertain monetary policy

The optimal loan decisions of banks are shown to be dependent on the banks' rational forecast of the future federal funds rate which in turn is related to the policy rule used by the Fed. Consequently, a change in the policy of the Fed will alter the reduced form model of the banking industry. This result brings into question the Fed's ability to predict and control the money stock under the procedure adopted by the Fed between October 1979 and September 1982.     

中国银行业系统流动性风险考察与控制——基于资产抛售价格视角

基于银行业在宏观风险来临时出现的流动性不足和系统性风险,通过建立 DSGE-VAR 模型,考量银行业在宏观经济运行框架下的系统流动性风险,结果发现:银行同业借贷、其他证券资产和交易性负债业务的综合作用会使得银行系统流动性风险总体增大,银行如果想要降低存款提取率对其流动性的影响,就要在银行间市场停止拆出资金、出售政府证券及其他流动资产,并出售潜在的流动性较低的资产.从监管层面来讲,应当通过监管的引导效应将交易性负债进行转化,引导同业借贷和其他证券资产业务向平衡区域集中,并在一定范围内减少银行其他证券资产业务的规模.     

Monetary policy,doubts and asset prices

Asset prices and the equity premium might reflect doubts and pessimism. Introducing these features in an otherwise standard New-Keynesian model changes optimal policy in a substantial way. There are three main results: (i) asset-price movements improve the inflation-output trade-off so that average output can rise without much inflation costs; (ii) a “paternalistic” policymaker – maximizing the expected utility of the consumers under the true probability distribution – chooses a more accommodating policy towards productivity shocks and inflates the equity premium; (iii) a “benevolent” policymaker – maximizing the objective through which decisionmakers act in their ambiguous world – follows a policy of price stability.     

存款保险、市场竞争与银行经营稳健性

本文基于银行存款市场空间竞争模型,探讨存款保险制度的实施效果和福利效应,及其与市场竞争政策的交互作用。研究表明,政府隐性担保尽管能够保障存款人利益,但会降低存款人对银行经营稳健性的要求,使得银行追求高风险高收益资产从而降低经营稳健性;而市场化的存款保险制度通过费率与风险挂钩的激励机制,能够有效提升银行经营稳健性,同时避免过高政策成本负担,实现较高的社会福利水平。随着市场竞争强化,引入风险差别费率保险制度,在提升银行经营稳健性和增进社会福利方面的效果逐渐增强。模型分析表明,当长期允许机构自由进出市场时,政府强化竞争政策短期可能降低银行的经营稳健性,但长期内高风险银行逐渐退出市场而更有效率的低风险银行进入市场,这种柔性市场退出机制使得银行业整体经营稳健性增强。因此,在金融市场中强化竞争政策,推行并完善当前市场化的风险差别费率存款保险制度,长期内有助于在保护存款人利益的同时,提升银行稳健性和社会福利。     

Explaining cross-border large-value payment flows: Evidence from TARGET and EURO1 data

We analysed the distribution of the TARGET cross-border interbank payment flows from both a cross-section and a time-series point of view using average daily data for the period 1999–2002. Our findings were, first, that “location matters” in the sense that bilateral payment flows seem to reflect an organisation of interbank trading between countries in which the size of the banking sector, geographic proximity and cultural similarities play a significant role. This result was also confirmed by a model developed drawing on the gravity models literature. Second, we found that the payment traffic in TARGET is strongly affected by technical market deadlines. In addition, such traffic is positively related mainly to the liquidity conditions and to the turnover of the euro area money market (particularly the unsecured overnight segment). Our model also provides a good explanation of the determinants of the interbank payments settled in the EURO 1 system.     

Large audit firm premium and audit specialisation in the public sector

The outsourcing of public‐sector audits to the private sector is an important issue. This study examines the fee premium in the public sector by comparing audit fees between the government auditor and the Big5. The study (i) statistically adjusts for self‐selection bias, (ii) allows the slope coefficients in the audit fee model to vary between the Big5 and the government audit and (iii) estimates the counterfactual audit fee premium. The Big5 premium is around 23 percent. However, the variation in premium depends on whether the Big5 auditor is an industry or city specialist.     

Systemic liquidity shortages and interbank network structures

This paper aims to shed light on the systemic nature of liquidity risk and to propose a method for calculating systemic liquidity shortages. Our method incorporates not only direct liquidity shortages but also indirect liquidity shortages due to the knock-on effects through interbank linkages. We perform a simulation with a simple banking system model and find that a deficit bank can mitigate a liquidity shortage by holding more claims on a surplus bank. Meanwhile, a greater imbalance in liquidity positions across banks tends to aggravate the liquidity shortage of a deficit bank. According to comparative analysis between different types of network structures, a core-periphery network with a deficit money center bank gives rise to the highest level of systemic liquidity shortage, and a banking system becomes more vulnerable to liquidity shocks as its interbank network becomes more ill-matched.     

Rules versus discretion in loan rate setting

Loan rates for seemingly identical borrowers often exhibit substantial dispersion. This paper investigates the determinants of the dispersion in interest rates on loans granted by banks to small and medium sized enterprises. We associate this dispersion with the loan officers’ use of “discretion” in the loan rate setting process. We find that “discretion” is most important if: (i) loans are small and unsecured; (ii) firms are small and opaque; (iii) the firm operates in a large and highly concentrated banking market; and (iv) the firm is distantly located from the lender. Consistent with the proliferation of information-technologies in the banking industry, we find a decreasing role for “discretion” over time in the provision of small credits to opaque firms. While widely used in the pricing of loans, “discretion” plays only a minor role in the decisions to grant loans.     

The impact of the euro on risk exposure of the world’s major banking industries

In this paper, we examine if the introduction of the euro impacted the risk exposures, risk premiums and, hence, the cost of equity of the banking industry of 11 Eurozone countries, five non-Eurozone European countries, and three non-European countries. Using a multi-factor asset-pricing model that allows time variation in the risk exposures, we find a statistically significant and economically large decline in the cost of equity of the banking industry across the three groups of countries following the introduction of the euro. Though we find an increase in the market and currency exposures after the euro, consistent with increased competition among banks, the fall in the cost of equity arises from an economically large decline in the currency premium. As expected, the Eurozone banking industry experienced the largest decrease. Our results are inconsistent with the argument that increased banking competition arising from the legislative changes accompanying the introduction of the euro would result in an increase in the overall risk premium of the banking sector.     

Cross-border interbank networks,banking risk and contagion

Recent events have highlighted the role of cross-border linkages between banking systems in transmitting local developments across national borders. This paper analyzes whether international linkages in interbank markets affect the stability of interconnected banking systems and channel financial distress within a network consisting of banking systems of the main advanced countries for the period 1994–2012. Methodologically, I use a spatial modeling approach to test for spillovers in cross-border interbank markets. The results suggest that foreign exposures in banking play a significant role in channeling banking risk: I find that countries that are linked through foreign borrowing or lending positions to more stable banking systems abroad are significantly affected by positive spillover effects. From a policy point of view, this implies that in stable times, linkages in the banking system can be beneficial, while they have to be taken with caution in times of financial turmoil affecting the whole system.     

信贷损失准备计提的理论分析

本文在预期损失与损失准备概念的基础上,通过对贷款价值、预期损失与违约升水之间关系的分析提出了信贷损失准备计提的理论与方法,指出基于未来现金流量折现法的信贷准备计提方法更能反映贷款的真实价值。最后结合银行信贷损失准备计提的实践,对理论方法与实践中的作法进行了简要的评析。     

Interbank liquidity risk transmission to large emerging markets in crisis periods

In this paper, we conduct two investigations regarding funding liquidity risk in large emerging economies: Brazil, Russia, India, China, and South Africa — BRICS. In the first, we track the relevance of monetary policy decisions originating in developed economies for interbank funding liquidity risk in BRICS economies during crisis periods by applying a time-varying parameter model in a Bayesian framework. The results indicate weak associations between interbank credit market and US monetary policy and market conditions. In contrast, the Federal Reserve's National Financial Conditions Index (NFCI) — a representative of the health of both real and financial sectors in the US — matters more. The temporal patterns of the results imply that key central banking decisions precede or coincide with low degrees of associations. In the second, we examine whether interbank credit crunch exerts an influence on market liquidity risk in BRICS economies using a Granger causality approach. The results reveal that interbank credit crunch depresses market liquidity in the corresponding domestic market and that the state of fear and credit market conditions in the US exert some influence in this regard. Overall, our findings hint at judicious market intervention and liquidity management by BRICS central banks.     

Interbank tiering and money center banks

This paper provides evidence that interbank markets are tiered rather than flat, in the sense that most banks do not lend to each other directly but through money center banks acting as intermediaries. We capture the concept of tiering by developing a core-periphery model, and devise a procedure for fitting the model to real-world networks. Using Bundesbank data on bilateral interbank exposures among 2000 banks from 1999 to 2012, we find strong evidence of tiering in the German banking system. This extent of tiering is unlikely to arise in standard random networks. Indeed, we show that bank specialization and balance sheet variables predict how banks position themselves in the interbank market. This link provides a promising avenue for understanding the formation of financial networks.     

影子银行对货币政策的影响

随着2007年全球金融危机爆发,学界和社会公众再度提高对金融监管与宏观货币政策的重视。影子银行是金融创新的产物,在给资本市场和产品市场带来活力的同时也使得人们更加关注影子银行对货币市场和货币政策的影响。本文基于信用与宏观经济学理论并利用中国化宏观数据进行论证,将市场利率划分为商业银行体系利率与影子银行体系利率并以贷款基准利率作为商业银行的总体利率,以一年期国债到期收益率作为影子银行利率,以市盈利率作为整个经济体系的实际利率,并利用线性回归给出三者间的关系。结果表明我国的影子银行在一定程度上可以起到降低社会总体融资成本、促进经济增长的作用,但也给物价和金融稳定施加一定的压力,在短期内会加快我国的货币流通速度,降低我国货币政策有效性。     

货币政策对银行间市场流动性影响效应的实证研究及启示

银行间货币市场是央行实施货币政策的重要平台，研究货币政策对银行间市场流动性的影响对于完善商业银行日常流动性管理具有重要意义。文章在设定银行间市场流动性测度指标与梳理货币政策工具对市场流动性的影响机制的基础上，分别使用事件分析法和时间序列模型对不同政策工具的影响效应进行实证分析，得出相关分析结论，并总结其对于完善商业银行日常流动性管理的启示。