Financial intermediation and the supply of liquidity

I study the role of financial intermediaries in supplying liquidity to the real economy. Firms hold liquid assets to meet unanticipated expenses. Financial intermediaries supply liquidity by pooling partially liquid assets, but their ability to commit future funds depends on their capital. When liquidity is scarce, there is a positive liquidity premium and investment is inefficiently low. Bank losses raise the liquidity premium and reduce investment. I analyze the optimal supply of public liquidity and find that when private liquidity is scarce the government should issue bonds for their liquidity properties, providing justification for countercyclical budget deficits.     

对我国股市流动性问题的几点思考

本文提出换手率指标不能用来衡量股市流动性,并按国际市场和学术界对流动性的界定对我国股市流动性进行了分析,得出我国股市流动性在国际上处于较低水平;并分析了造成这种状况的原因主要有市场结构、交易机制和监管环境等方面;最后提出了改善我国股市流动性的一些对策。     

Bank liquidity creation,monetary policy,and financial crises

This paper examines the interplay among bank liquidity creation (which incorporates all bank on- and off-balance sheet activities), monetary policy, and financial crises. We find that: (1) high liquidity creation (relative to trend) – particularly off-balance sheet liquidity creation – helps predict crises, controlling for other factors; (2) monetary policy has statistically significant, but economically minor effects on liquidity creation by small banks during normal times, and these effects are even weaker during financial crises; (3) monetary policy has very little effects on medium and large bank liquidity creation during both normal times and crises. These findings suggest that authorities may wish to monitor bank liquidity creation closely in order to predict and perhaps lessen the likelihood of financial crises. They might also consider other tools to control bank liquidity creation, such as capital and liquidity requirements.     

Asymmetric transmission of a bank liquidity shock

We investigate whether banks that receive a positive liquidity shock make up for the reduction in the amount of credit supplied by banks that suffer a negative liquidity shock. For identification, we use the exogenous shock to the Brazilian banking system caused by the international turmoil of 2008 that sparked a run on small and medium banks toward systemically important banks. We find that a reduction in liquidity causes banks to strongly decrease their loan supply, whereas a positive liquidity shock has a small (if any) effect on the loan supply. Our evidence shows that this asymmetric effect of liquidity on the loan supply occurs both at the intensive and the extensive margins. Our findings are consistent with the theories that predict that borrowers face switching costs and that banks tend to hold on to liquidity during periods of systemic uncertainty.     

Bank capital and economic activity

Banks argue that holding higher capital will have adverse implications on their lending activities and thereby on economic growth. Yet, the effect of a stronger capital base on economic growth remains largely unsettled. We argue that better capitalized banks improve financial stability conditions and, in dire times, they are able to sustain credit to the economy thereby containing adverse macroeconomic implications. Using various methods, we test for the presence and strength of a financial stability channel and a bank lending channel by drawing evidence from 47 advanced and developing countries over close to two decades. We find that higher capital ratios improve financial stability and help sustain bank lending, ultimately exerting a positive influence on economic activity. These effects on real GDP growth are economically significant, reaching up to 1¼ percentage points for each percentage point acceleration in capital. Our main results are robust to various sensitivity checks, supporting the conclusion that safer banking systems do not bridle economic activity.     

商业银行的流动性转换职能

利用Diamond的两个模型说明商业银行流动性转换职能的性质及其发展趋势.在信息技术不发达、人们的市场参与程度比较低时,传统商业银行的流动性转换是有效的,然而它有内在的不稳定性,容易受到挤兑的冲击.随着信息技术的改善、人们的市场参与度提高,金融市场的流动性转换职能将逐渐变得重要.     

Reprint of: Market liquidity in the financial crisis: The role of liquidity commonality and flight-to-quality

We examine the dynamics and the drivers of market liquidity during the financial crisis, using a unique volume-weighted spread measure. According to the literature we find that market liquidity is impaired when stock markets decline, implying a positive relation between market and liquidity risk. Moreover, this relationship is the stronger the deeper one digs into the order book. Even more interestingly, this paper sheds further light on so far puzzling features of market liquidity: liquidity commonality and flight-to-quality. We show that liquidity commonality varies over time, increases during market downturns, peaks at major crisis events and becomes weaker the deeper we look into the limit order book. Consistent with recent theoretical models that argue for a spiral effect between the financial sector’s funding liquidity and an asset’s market liquidity, we find that funding liquidity tightness induces an increase in liquidity commonality which then leads to market-wide liquidity dry-ups. Therefore our findings corroborate the view that market liquidity can be a driving force for financial contagion. Finally, we show that there is a positive relationship between credit risk and liquidity risk, i.e., there is a spread between liquidity costs of high and low credit quality stocks, and that in times of increased market uncertainty the impact of credit risk on liquidity risk intensifies. This corroborates the existence of a flight-to-quality or flight-to-liquidity phenomenon also on the stock markets.     

Bank bailouts and economic growth: Evidence from cross-country,cross-industry data

In this paper, we revisit the question of how bank bailouts affect economic growth. We adopt a broad concept of bailouts, which includes both capital injections and liquidity support to the banking system. We employ an identification strategy that controls for the various dimensions of bailout endogeneity and find that liquidity support has a significant positive real economic effect. The effect of recapitalizations per se is not statistically significant, but they reinforce the positive impact of liquidity interventions. Utilizing bank-level data, we provide evidence that this is the case because better-capitalized banks and banks in significantly recapitalized systems have a higher propensity to lend, thus raising aggregate-level real economic growth.     

Equity markets and growth: Cross-country evidence on timing and outcomes, 1980–1995

The rapid expansion of organized equity exchanges in both emerging and developed markets has prompted policymakers to raise important questions about their macroeconomic impact, yet the need to focus on recent data poses implementation difficulties for econometric studies of dynamic interactions between stock markets and economic performance in individual countries. This paper overcomes some of these difficulties by applying recent developments in the analysis of panels with a small time dimension to estimate vector autoregressions for a set of 47 countries with annual data for 1980–1995. After describing recent theories on the role of stock markets in growth and considering a pure cross-sectional empirical approach, our panel VARs show leading roles for stock market liquidity and the intensity of activity in traditional financial intermediaries on per capita output. The findings underscore the potential gains associated with developing deep and liquid financial markets in an increasingly global economy.     

Closing call auctions and liquidity

The present paper examines the impact of closing call auctions on liquidity. It exploits the natural experiment offered by the introduction of a closing call auction on the Australian Stock Exchange on 10 February 1997. The introduction of the closing call auction is associated with a reduction in trading volume at the close of continuous trading. However, bid‐ask spreads during continuous trading are largely unaffected by the introduction of the closing call auction. Therefore, closing call auctions consolidate liquidity at a single point in time without having any adverse effect on the cost of trading.     

农村家庭金融市场参与影响因素的比较研究

通过金融深化增加农村家庭参与金融市场的机会,让金融为广大农村家庭服务,改善其资源配置,解决农村金融抑制.本文将农村家庭金融资产分为安全型和风险型,以问卷调查获取的数据建立Logistic回归模型对东部地区与西部地区农村家庭参与金融市场的决定因素进行研究和比较.模型结果验证了财富效应假设、人力资本假设在东西部存在不同的影响结果,但资产回报率越高则农村家庭参与度越高在东西部的影响都非常显著,此外,家庭控制变量影响在东西部地区有不同的表现.     

Bank stock returns and economic growth

Previous research has established (i) that a country’s financial sector influence future economic growth and (ii) that stock market index returns affect future economic growth. We extend and tie together these two strands of the growth literature by analyzing the relationship between banking industry stock returns and future economic growth. Using dynamic panel techniques to analyze panel data from 18 developed and 18 emerging markets, we find a positive and significant relationship between bank stock returns and future GDP growth that is independent of the previously documented relationship between market index returns and economic growth. We also find that much of the informational content of bank stock returns is captured by country-specific and institutional characteristics, such as bank-accounting-disclosure standards, banking crises, enforcement of insider trading law and government ownership of banks.     

Pricing of time-varying liquidity risk in Finnish stock market: new evidence

Using two recently developed illiquidity measures, we estimate a conditional version of liquidity-adjusted capital asset pricing model (LCAPM), which allows for a time-varying decomposition of the total illiquidity premium into a level component and three risk components. The total estimated annualized illiquidity premium for the Finnish equities during 1997–2015 is 1.13–1.90% depending on the illiquidity measure. Of the three systematic liquidity risk components, risk arising from hedging of wealth shocks is the most important followed by commonality in liquidity risk, whereas flight to liquidity risk is not significantly priced in the Finnish stock market. Our results show that the liquidity risk is time varying, therefore the models estimating the risk-return relationship should address the issue of conditionality.     

The price of liquidity: The effects of market conditions and bank characteristics

We study the prices that individual banks pay for liquidity (captured by borrowing rates in repos with the central bank and benchmarked by the overnight index swap) as a function of market conditions and bank characteristics. These prices depend in particular on the distribution of liquidity across banks, which is calculated over time using individual bank-level data on reserve requirements and actual holdings. Banks pay more for liquidity when positions are more imbalanced across banks, consistent with the existence of short squeezing. We also show that small banks pay more for liquidity and are more vulnerable to squeezes. Healthier banks pay less but, contrary to what one might expect, banks in formal liquidity networks do not. State guarantees reduce the price of liquidity but do not protect against squeezes.     

Privatization and stock market liquidity

This paper shows that share issue privatization (SIP) is a major source of domestic stock market liquidity in 19 developed economies. Particularly, privatization IPOs have a negative effect on the price impact – measured by the ratio of the absolute return on the market index to turnover. This result is robust to the inclusion of controls for other observable and unobservable factors, having also considered the endogenous nature of the decision to privatize.     

全球流动性过剩、对冲基金发展与中国金融稳定

全球流动性过剩导致全球金融资产激增,推动对冲基金业规模迅速膨胀,也使得对冲基金业在结构和投资动向上也出现了新的变化。对冲基金在全球寻找套利和投机机会,对全球的金融稳定产生一定的影响,在此背景下,中国需要审慎资本项目开放和加强对冲基金的监管。     

Bank market power,factor reallocation,and aggregate growth

Using a unique firm-level sample of approximately 700,000 firm-year observations of German small and medium-sized enterprises (SMEs), this study seeks to identify the effect of bank market power on aggregate growth components. We test for a pre-crisis sample whether bank market power spurs or hinders the reallocation of resources across informationally opaque firms. Identification relies on the dependence on external finance in each industry and the regional demarcation of regional banking markets in Germany. The results show that bank markups spur aggregate SME growth, primarily through technical change and the reallocation of resources. Banks seem to need sufficient markups to generate the necessary private information to allocate financial funds efficiently.     

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.     

Natural disasters and economic growth: The role of banking market structure

Following a natural disaster, the rate of economic growth recovers faster in less competitive banking markets. A 10% reduction in competition increases the rate of economic growth by 0.3%. In less competitive markets, banks respond to a disaster by increasing the supply of real estate credit by refinancing mortgage loans, but do not lend more to businesses or consumers. Instead, government agencies provide disaster loans to affected businesses and households. Smaller, profitable and well-capitalized institutions that rely more on traditional retail banking originate most mortgage credit.