商业银行相对风险比较研究——来自中国14家商业银行2001-2004年的经验证据

为寻找中国商业银行整体运行中的薄弱环节,本文基于所构建的风险评价指标体系及风险比较模型,对中国14家主要商业银行2001～2004年的相对风险水平进行了对比分析.研究发现,依照相对风险程度的高低,14家商业银行可以划分为三个层次,第一层次,由华夏银行、招商银行、民生银行及中国银行所构成,安全性较高;而中国农业银行、中国工商银行和广东发展银行则隶属于风险最高的第三层次,是中国银行业安全的薄弱环节.由于不良贷款率、盈利能力和资产的流动性比率是影响商业银行风险状况的主要因素,因此从这三个方面入手,改善位于第三层次商业银行的风险状况,是提高中国银行业整体安全性的关键,应该成为当前银行业改革的重点.     

信用风险、信息与协调

金融机构的短期债券同时被大小两种债权人持有。信用风险由流动性不足风险和破产风险组成。我们建立了一个同时包含大小两种债权人的模型来研究大的债权人、短期债券比例与市场流动性如何影响信用风险。模型的结果显示:(1)提高大的债权人的信息准确度可以让小的债权人更愿意继续借贷,因此降低了流动性不足风险;(2)短期债券比例的提高会增加流动性不足风险,也就增加了总的信用风险;(3)市场流动性越强,流动性不足风险就越小。     

Contagious bank runs

We present a model of the propagation process of bank runs. A bank failure alone is not sufficient to trigger a panic. In accord with the empirical evidence, runs become contagious only during periods of macroeconomic instability. In addition, we make a clear distinction between illiquidity and insolvency as possible causes of bank failures. We also show that, despite the possibility of runs, the deposit contract is superior to autarky.     

银行风险、贷款规模与法律保护水平

本文根据更加全面的中国银行业数据,首先研究了法律保护水平和银行风险(Z值)之间的关系;其次,分析了影响银行风险的中间途径,研究了法律保护水平和贷款规模之间的关系;最后,对法律保护水平和银行风险(Z值)各组成部分之间的关系进行了讨论。研究发现,法律保护水平越高(尤其是对知识产权的保护),银行信贷规模越大,银行经营业绩也越高,但银行的资本充足率较低,最终导致银行风险上升(Z值较低)。本文结论说明:法律制度的建设和完善以及加强对银行资本的监管等具有重要意义。     

Liquidity and equity returns in Borsa Istanbul

We investigate the relationship between expected returns and liquidity measures in Borsa Istanbul. To do so, we gather a wide range of illiquidity measures that can be applied to the market. Firm-level cross-sectional regressions indicate that there is a positive relationship between various illiquidity measures and one- to six-month ahead stock returns. Findings of the article are robust after using different sample periods and controlling for well-known priced factors, such as market beta, size, book-to-market ratio and momentum. The portfolio analysis reveals that stocks that are in the highest illiquidity quintile earn 7.2%–19.2% higher risk-adjusted annual returns than those in the lowest illiquidity quintile. The illiquidity premium is stronger for small stocks and stocks with higher return volatility and it increases (decreases) during periods of extremely low (high) market returns.     

Portfolio choice with high frequency data: CRRA preferences and the liquidity effect

This paper suggests a new approach for portfolio choice. In this framework, the investor, with CRRA preferences, has two objectives: the maximization of the expected utility and the minimization of the portfolio expected illiquidity. The CRRA utility is measured using the portfolio realized volatility, realized skewness and realized kurtosis, while the portfolio illiquidity is measured using the well-known Amihud illiquidity ratio. Therefore, the investor is able to make her choices directly in the expected utility/liquidity (EU/L) bi-dimensional space. We conduct an empirical analysis in a set of fourteen stocks of the CAC 40 stock market index, using high frequency data for the time span from January 1999 to December 2005 (seven years). The robustness of the proposed model is checked according to the out-of-sample performance of different EU/L portfolios relative to the minimum variance and equally weighted portfolios. For different risk aversion levels, the EU/L portfolios are quite competitive and in several cases consistently outperform those benchmarks, in terms of utility, liquidity and certainty equivalent.     

Risk and regret aversions on optimal bank interest margin under capital regulation

This paper examines the bank's optimal loan rate (and thus the bank's interest margin) under more stringent capital regulation when the bank is not only risk-averse but also regret-averse. Risk-averse preferences are characterized by an option-based utility function that includes disutility from the dislike of bank equity risk. Regret-averse preferences feature an option-based utility function that includes disutility from having chosen ex-post suboptimal alternatives. We show that an increase in bank capital requirement results in an increased margin under risk aversion dominating regret aversion, whereas it results in a reduced margin under regret aversion dominating risk aversion. The former holds when risk aversion domination stems from increasing risk-averse preference, but not from decreasing regret-averse preference, while the latter holds when regret aversion domination results from either decreasing risk-averse or increasing regret-averse preference. Risk aversion, as such, makes the bank more prudent and less prone to risk-taking, while regret aversion, as such, makes the bank less prudent and more prone to risk-taking.     

A Bank Panic Model with a Bond Market

We have constructed a model of bank failure with monetary assets (bonds), adopting the overlapping-generations model. In it, monetary assets play a role in dispersing the credit crunch from a single bank run into a nationwide bank panic. As established by Diamond and Dybvig (1983), a single bank run is explained by a model without any monetary assets. In our model, however, the bond market is introduced to describe the process in which a bank run spreads. As a result, our model describes a general phenomenon—credit market failure—rather than a single bank run.
JEL classification numbers: G21, E40.     

European policy and markets: Did policy initiatives stem the sovereign debt crisis in the euro area?

We investigate how European policy initiatives influenced market assessments of sovereign default risk and banking sector fragility during the sovereign debt crisis in four adversely affected countries — Portugal, Ireland, Spain and Italy. We focus on three broad groups of policies: (a) ECB policy actions (monetary and financial support), (b) EU programs (financial and fiscal rules as well as financial support in crisis countries), and (c) domestic austerity programs. We measure immediate market impact effects: what policies changed risk perceptions, using CDS spreads on sovereign bonds and banks in this assessment. We employ dynamic panel and event study methodologies in the empirical work. We find that a number of programs initially stabilized sovereign and bank bond markets (e.g. Outright Monetary Transactions program), although announcement and implementation impacts on markets differed in some cases (e.g. second Covered Market Bond Program). Actions designed to shore up sovereign markets often lowered risk assessments in bank bond markets and policies designed to ensure safety and soundness of the European banking system in some cases significantly impacted sovereign debt markets. Finally, a number of policies designed to stabilize markets had surprisingly little immediate impact on either sovereign or bank bond market risk assessments.     

The impacts of bank-specific and macroeconomic variables on the capital adequacy ratio: evidence from Islamic banks

The study investigates the relationship between the capital adequacy ratio (CAR) and different bank-specific and macroeconomic variables for 28 Islamic banks. We document that there is a statistically significant positive relationship between the CAR and the bank-specific and macroeconomic variables. In particular, bank-specific variables such as ROA, ROE, leverage, credit risk and size show a strong association with the CAR, while on the macroeconomic side, inflation, market capitalization and exchange rate have an impact on the average Islamic bank in our sample study. Furthermore, we run another model (equity to assets ratio) as dependent, with similar control variables, and the results reveal that, except for inflation, all the variables that have a significant effect on the CAR also influence the equity to assets ratio.     

Economic growth, liquidity, and bank runs

We construct an endogenous growth model in which bank runs occur with positive probability in equilibrium. In this setting, a bank run has a permanent effect on the levels of the capital stock and of output. In addition, the possibility of a run changes the portfolio choices of depositors and of banks, and thereby affects the long-run growth rate. These facts imply that both the occurrence of a run and the mere possibility of runs in a given period have a large impact on all future periods. A bank run in our model is triggered by sunspots, and we consider two different equilibrium selection rules. In the first, a run occurs with a fixed, exogenous probability, while in the second the probability of a run is influenced by banks’ portfolio choices. We show that when the choices of an individual bank affect the probability of a run on that bank, the economy both grows faster and experiences fewer runs.     

Real estate and relative risk aversion with generalized recursive preferences

This paper investigates how real estate wealth affects the household’s attitude toward risk, and derives the closed-form expressions for risk aversion with generalized recursive preferences. We find three channels through which real estate wealth affects risk aversion, and these channels are absent in the traditional measure of relative risk aversion as in Arrow (1965) and Pratt (1964). First, illiquidity and fluctuations in real estate value increase consumption risk, thereby increasing risk aversion. Second, real estate as an asset provides a cushion for absorbing negative shocks to households, reducing risk aversion. Third, an increase in real estate prices lowers the profit of the firm that uses real estate as a factor of production, induces a decline in the real wage, and causes a rise in consumption risk. This channel increases risk aversion. We study how these channels as a whole determine relative risk aversion using a basic real business cycle model with generalized recursive preferences and compare the results with the case of expected utility preferences. Finally, we explore the implications of the firm’s and the household’s real estate holdings and illiquidity of real estate on the risk premiums for equity and real estate.     

Water as an investment: liquid yet illiquid!

The water industry is in great need of further large investments to address existing severe water shortages worldwide which requires the participation of private sector investors. This industry is heavily infrastructure based and is therefore saddled with fixed assets-in-place or illiquid assets. This exposes the industry to what is termed as ‘illiquidity risk’, and hence, investors in this industry should be compensated for bearing this risk with an appropriate return premium (i.e. extra return). In this study, we provide evidence as to whether illiquidity risk indeed significantly affects returns in this industry. We examine the case of all 76 firms that compose the five major global water indices. After controlling for other factors that impact on returns, our results suggest that asset illiquidity is positively associated with stock returns. Specifically, water firms with a larger proportion of illiquid assets-in-place are observed to have greater stock returns than those with a smaller proportion of illiquid assets. Our results have important implications for the financing of water-related projects particularly those which involve the participation of investors from the private sector.     

Empirical tests on the asset pricing model with liquidity risk: An unobserved components approach

The aim of this paper is to test empirically the conditional liquidity-adjusted capital asset pricing model (L-CAPM) developed by Acharya and Pedersen (2005). Accordingly, we propose to estimate the L-CAPM using unobserved components methodology, which allows us to take into account the main stylized facts characterizing liquidity. Based on a sample of firms listed on the NASDAQ, our empirical analysis reveals several findings. Firstly, we show that liquidity is time-varying and exhibits strong seasonality. Secondly, we highlight the impact of the liquidity level premium on asset prices. Thirdly, we show that the most important liquidity risk is related to the covariance between portfolio illiquidity and market returns. Fourthly, we observe a negative relationship between portfolio returns and market illiquidity. Fifthly, we find that liquidity risk and illiquidity level are not always positively correlated.     

Neo‐Fisherism and inflation control

According to conventional central banking wisdom, an inflation‐targeting central bank should increase (decrease) its nominal interest rate target when inflation is above (below) its target. According to neo‐Fisherites, conventional central bankers have the sign wrong. Essentially all mainstream macroeconomic models tell us that increases in nominal interest rates increase inflation—in the short run and in the long run. This paper reviews neo‐Fisherian theory and evidence and addresses issues relating to inflation control in low real interest rate environments.     

Does illiquidity matter in residential properties?

No, it does not, despite the general perception that illiquidity matters in real estate. As expected, our evidence shows that the illiquidity costs for the U.S. residential properties are large. The costs are equivalent to 12% of the total property returns on average, ranging from 9.5% to 29.5% of property prices depending on the illiquidity level and market conditions. However, when amortized by holding periods, monthly illiquidity costs are on average 0.08%, and illiquidity risk does not appear to be priced in residential properties; illiquid properties do not show higher returns than liquid properties. On the contrary, we find evidence of flight-to-quality in bull markets, that is, high-quality illiquid properties are preferred to low-quality liquid properties in buoyant markets. These results are in sharp contrast with those in equities and bonds where flight-to-liquidity has been reported when markets are in stress.     

Local and global illiquidity effects in the Balkans frontier markets

We study market illiquidity across 11 national markets of the Balkans. In general, the EU member countries are more liquid than the nonmember countries. Turkey, however, has the most liquid market, while Serbia and Bosnia are the least liquid. Global illiquidity sourced from the US has a strong and positive impact on pricing in eight of the Balkans markets. In contrast, illiquidity transmitted from the EU impacts expected returns in only two instances, while local illiquidity is significant for just one market. Croatia and Slovenia are most susceptible to transmissions of regional illiquidity, each receiving illiquidity spillovers from four sources.     

EXPERIMENTAL AND SELF‐REPORTED MEASURES OF RISK TAKING AND DIGIT RATIO (2D:4D): EVIDENCE FROM A LARGE,SYSTEMATIC STUDY

We systematically investigate the links between the digit ratio (2D:4D)—a biomarker for prenatal testosterone exposure—and two measures of individual risk taking: (i) risk preferences (RP) over lotteries with real monetary incentives and (ii) self‐reported risk attitude (RA). We find that both the right‐hand and the left‐hand digit ratio are significantly associated with RP: Subjects with lower digit ratios tend to choose riskier lotteries. Neither digit ratio, however, is associated with self‐reported RA.     

Central Banking and Post-Keynesian Economics

Abstract

The Post-Keynesian theory of endogenous money has given much attention to the role of the central bank in the money creation process. Circuit theory has neglected this role, in so far as it has focused on the relationship between banks and firms within a monetary production economy. The aim of this paper is therefore twofold. First, it intends to fill this gap in circuit theory, by providing a role for the central bank in settlement of interbank debts. Secondly, it aims at reinforcing the Post-Keynesian analysis of central bank money by considering both the money-purveying and the credit-purveying roles of the settlement institution in the interbank market. The result of this analysis is a more comprehensive theory of endogenous money, where the lender-of-last-resort facilities of a central bank are viewed as an endogenous phenomenon involving both a money creation and a credit operation between the central bank and the domestic banking system. In such a framework, monetary policy consists of setting the base rate of interest at a level that enables banks to limit their bilateral debt position in the interbank market, so as not to disrupt the workings of the payment system by either an illiquidity or an insolvency crisis.     

Banking business models and risk: Findings from the ECB's comprehensive assessment

We use the results of the ECB's comprehensive assessment to evaluate the importance of the bank business model on risk assessment and the persuasive effectiveness of different supervisory styles on banks’ recapitalization. Our analysis reveals inconsistencies in the information content provided by the various regulatory measures used for assessing bank stability. Moreover, opposite to CET1 ratio, the leverage ratio provides assessments on business models more consistent with a market-based measure of bank risk exposure and Z-SCORE. Accounting for several control variables both at the bank and country level, we also find evidence that the effectiveness of the supervisory action depends on the specific type of supervisory model. In particular, countries adopting the hybrid model seem more effective in persuading banks to recapitalize preventively. Differently, countries adopting the integrated and the sectorial model seem less effective in their requests.