Applying portfolio theory to global bank lending

Portfolio theory provides some insights into how a bank should manage its global exposures. Practical application of some of the principles of portfolio analysis is possible if comparable credit ratings are available and if the impact on each loan's rating of likely future events can be assessed. If further restrictive assumptions are made about which quality dimensions of the portfolio are more important (and how much more important), and if judgements can be quantified about what risk-return tradeoffs are acceptable, then it is possible to derive measures to guide exposure and pricing decisions. This article is related to the other papers in this special issue in that country and corporate risk assessment methodologies can provide important inputs into the portfolio analysis. This paper, however, attempts to go beyond the evaluation of risk at the level of individual companies, countries, or other loan customers, and to focus instead on the problem of managing the riskiness of the overall bank loan portfolio.     

Liquidity regulation and bank lending

Bank liquidity shortages during the global financial crisis of 2007–2009 led to the introduction of liquidity regulations, the impact of which has attracted the attention of academics and policymakers. In this paper, we investigate the impact of liquidity regulation on bank lending. As a setting, we use the Netherlands, where a Liquidity Balance Rule (LBR) was introduced in 2003. The LBR was imposed on Dutch banks only and did not apply to other banks operating elsewhere within the Eurozone. Using this differential regulatory treatment to overcome identification concerns and a difference-in-differences approach, we find that the LBR increased the volume of lending by Dutch banks relative to other banks located in the Eurozone. Increased equity, an inflow of retail deposits and subsequent increase in balance sheet size allowed Dutch banks to increase lending despite having to meet the LBR requirements. The LBR also affected the loan composition of Dutch banks (with corporate and retail lending increasing more than mortgage lending) and the maturity profile of loan portfolios. Our results have relevance for policymakers tasked with monitoring the impact of liquidity regulations on banks and the real economy.     

Climate transition risk and bank lending

We investigate whether and how banks in the global syndicated loan market adjusted the pricing and supply of credit to account for higher climate transition risk (CTR) in the years following the 2015 Paris Agreement. We measure CTR by considering the pollution levels of borrowers and the engagement of countries where borrowers are headquartered in addressing climate change issues. The evidence is mixed and points to nonlinear relations between lending variables and CO2 emissions. Policy events such as the Paris Agreement and government environmental awareness are significant climate risk drivers that, when combined, may amplify banks' perception of CTR.     

Sovereign risk and the bank lending channel in Europe

The main purpose of this article is to analyze how sovereign risk influences the loan supply reaction of banks to monetary policy through the bank lending channel. Additionally, we aim to test whether this reaction differs in easy and tight monetary regimes. Using a sample of 3125 banks from the euro zone between 1999 and 2012, we find that sovereign risk plays an important role in determining loan supply from banks during tight monetary regimes. Banks in higher sovereign risk countries reduce lending more during tight regimes. However, we find little evidence to support any relationship between sovereign risk and loan supply reaction to monetary policy expansions. These results are very interesting for the way monetary policy is conducted in Europe. Banking union, banking system strength, and the budget control of governments would be necessary measures to reduce the heterogeneous transmission of the monetary policy in the euro zone.     

Bank regulation and risk-taking incentives: An international comparison of bank risk

This paper uses a panel database of 251 banks in 36 countries to analyze the impact of bank regulation on bank charter value and risk-taking. After controlling for deposit insurance and for the quality of a country's contracting environment, the results indicate that regulatory restrictions increase banks' risk-taking incentives by reducing their charter value. Banks in countries with stricter regulation have a lower charter value, which increases their incentives to follow risky policies. These results corroborate a negative relation between regulatory restrictions and the stability of a banking system. Deposit insurance has a positive influence on bank charter value, mitigating the risk-shifting incentives it creates. This positive influence disappears when we control for the possible endogeneity of deposit insurance.     

Monetary policy,bank lending and corporate investment

The purpose of this study is to shed light on the chain of causality from macroeconomic financial policy to the microeconomic investment function. Concretely, we aim to provide an in-depth analysis of the relationships between the monetary policy of central banks, the loan policy of commercial banks, and the investment behavior of firms. We focus on countries that conduct their monetary policy under the inflation-targeting framework. Our empirical analysis with data from Germany, Switzerland and Thailand provides several new insights. First, after controlling for the US monetary policy, the monetary policy in Germany and Thailand appears to influence the banks' lending rate in the short run (i.e. within two months), whereas the monetary policy in Switzerland seems to be ineffective at influencing the banks' lending rate in the short run. Second, our results show that the banks' lending rate has a negative effect on their loans and that this negative effect is weakened by their growth opportunities. Third, we find that the supply of bank loans plays a more pivotal role in determining firms' investment than the lending rate. Last but not least, we document that neither the lending rate nor the loan-to-assets ratio moderates the sensitivity of the firms' investment to growth opportunities.     

Media ownership,concentration and corruption in bank lending

Building on the pioneering study by Beck, Demirguc-Kunt, and Levine (2006), this study examines the effects of media ownership and concentration on corruption in bank lending using a unique World Bank data set covering more than 5,000 firms across 59 countries. We find strong evidence that state ownership of media is associated with higher levels of bank corruption. We also find that media concentration increases corruption both directly and indirectly through its interaction with media state ownership. In addition, we find that media state ownership and media concentration both accentuate the positive link between official supervisory power and lending corruption and attenuate the negative link between the regulations that empower private monitoring and corruption in lending. Media state ownership or media concentration also accentuates the positive link between banking concentration and corruption in lending. Furthermore, the links between media structure and corruption are more pronounced when the borrowing firm is privately owned.     

Rescue packages and bank lending

This paper examines whether the rescue measures adopted during the global financial crisis helped to sustain the supply of bank lending. The analysis proposes a setup that allows testing for structural shifts in the bank lending equation, and employs a novel dataset covering large international banks headquartered in 14 major advanced economies for the period 1995–2010. While stronger capitalisation sustains loan growth in normal times, banks during a crisis can turn additional capital into greater lending only once their capitalisation exceeds a critical threshold. This suggests that recapitalisations may not translate into greater credit supply until bank balance sheets are sufficiently strengthened.     

Anxious periods and bank lending

We examine the lending behavior of banks during anxious periods. The main characteristic of anxious periods is that the perceptions and expectations about economic conditions worsen for economic agents even though the economy is not in a recession. We identify distinct periods of anxiety for consumers, CEOs (firms) and analysts. Subsequently, we study the lending behavior of US banks during the anxious quarters from 1985 to 2010, using bank-level data. The results show that banks’ lending falls when consumers and analysts are anxious, and this effect is more pronounced when banks hold a higher level of credit risk. These effects are more pronounced in anxious periods that were followed by recessions, and in these periods loan growth also responds negatively to the anxiety of CEOs. Yet, these effects are quite less prevalent in the period after 2001.     

Bank pay caps,bank risk,and macroprudential regulation

This paper studies the consequences of a regulatory pay cap in proportion to assets on bank risk, bank value, and bank asset allocations. The cap is shown to lower banks’ risk and raise banks’ values by acting against a competitive externality in the labour market. The risk reduction is achieved without the possibility of reduced lending from a Tier 1 increase. The cap encourages diversification and reduces the need a bank has to focus on a limited number of asset classes. The cap can be used for Macroprudential Regulation to encourage banks to move resources away from wholesale banking to the retail banking sector. Such an intervention would be targeted: in 2009 a 20% reduction in remuneration would have been equivalent to more than 150 basis points of extra Tier 1 for UBS, for example.     

Sentiment volatility and bank lending behavior

Using a panel of commercial, co-operative and savings banks from G7 countries, we investigate whether the changes in sentiment and its volatility affect banks' lending behavior. We show that the changes in economic agents' sentiment and its volatility affect bank lending negatively, while the impact sizes differ across indicators. We also examine volatility effects on banks' loan growth as uncertainty reaches excessive levels. We highlight the role that several bank-specific variables play on bank lending and discuss to what extent uncertainty effects are transmitted on credit growth through them.     

Changes in bank lending standards and the macroeconomy

Identifying macroeconomic effects of credit shocks is difficult because many of the same factors that influence the supply of loans also affect the demand for credit. Using bank-level responses to the Federal Reserve's Loan Officer Opinion Survey, we construct a new credit supply indicator: changes in lending standards, adjusted for the macroeconomic and bank-specific factors that also affect loan demand. Tightening shocks to this credit supply indicator lead to a substantial decline in output and the capacity of businesses and households to borrow from banks, as well as to a widening of credit spreads and an easing of monetary policy.     

It takes more than two to tango: Multiple bank lending,asset commonality and risk

Multiple-bank lending is the most prevalent form of bank-firm credit relationships in nearly all countries. It results in high asset commonality and interconnectedness, allows idiosyncratic risks to become systemic, and makes the banking system more fragile and vulnerable to shocks. Using detailed, granular-level, supervisory data on large corporate loans, we show that multiple bank lending is driven, inter alia, by regulatory limits on large credit exposures. These limits, aimed at mitigating an individual bank's concentration risk, force firms to explore alternative sources of funding, making the common borrowers' phenomenon more prominent. We find that multiple bank lending is determined endogenously, and its likelihood increases with the level of portfolio similarity between lenders. The size of the original lender and its systemic importance magnifies this effect. We argue that banks do not internalize the systemic effect of their lending decisions and that multiple bank lending constitutes an insurance mechanism related to an implicit "too-many-to-fail" guarantee. Its externalities are suboptimal and should be reinforced with better monitoring by the related authorities.     

Capital ratios and bank lending: A matched bank approach

This paper examines the impact of bank capital ratios on bank lending by comparing differences in loan growth to differences in capital ratios at sets of banks that are matched based on geographic area as well as size and various business characteristics. We argue that such comparisons are most effective at controlling for local loan demand and other environmental factors. For comparison we also control for local factors using MSA fixed effects. We find, based on data from 2001 to 2011, that the relationship between capital ratios and bank lending was significant during and shortly following the recent financial crisis but not at other times. We find that the relationship between capital ratios and loan growth is stronger for banks where loans are contracting than where loans are expanding. We also show that the elasticity of bank lending with respect to capital ratios is higher when capital ratios are relatively low, suggesting that the effect of capital ratio on bank lending is nonlinear. In addition, we present findings on the relationship between bank capital and lending by bank size and loan type.     

Bank incentives and suboptimal lending decisions: Evidence from the valuation effect of bank loan announcements in Japan

Using a sample of bank loan announcements in Japan, we examine whether or not banks have incentives to engage in suboptimal lending that results in wealth transfer from the banks to the borrowing firms. We find that abnormal returns for borrowing firms are significantly positive, but those for lending banks are sometimes significantly negative. Furthermore, the announcement returns for borrowing firms are negatively related to those for lending banks, especially when poorly performing firms borrow from financially healthy (low-risk) banks. Our results suggest that the positive valuation effect of bank loan announcements for borrowing firms is mainly due to a wealth transfer from lending banks.     

Joint size and ownership specialization in bank lending

During the period 1996–2003 consolidation reduces the size diversity of Spanish banks but diversity in ownership forms increases as savings banks and cooperatives gain market share. This paper examines the implications of these structural changes in Spanish credit markets in terms of banks’ specialization (large or small borrowers, relational or transactional lending) and consequent credit availability for small and opaque firms. We find that size-of-the-borrower/size-of-the-bank specialization follows a different pattern in savings banks than in commercial banks, suggesting lower organizational diseconomies of size in the former than in the latter, which helps to explain the increase in ownership diversity over time. We also find that savings banks and cooperatives specialize relatively more in relational lending than commercial banks so ownership diversity assures funding for small firms even if bank consolidation continues.     

Switching costs and relationship profits in bank lending

This paper studies how the cost of switching banks affects the profits available from relationship based lending when the relationship produces inside information. Lower switching cost compounds the adverse selection problem, discouraging outsider banks to depress loan rates. The adverse selection effect eases off along with higher switching cost, leading to more aggressive bidding and thereby reduction in insider profits. Above a certain threshold, however, the adverse selection effect vanishes completely and the insider profits turn increasing in the switching cost. The model predicts that the availability of relationship credit is non-monotonously related to the magnitude of the switching cost.     

Political interference and crowding out in bank lending

I provide novel evidence on the real costs of political interference in bank lending. Analyzing staggered state elections in India, I show that politically motivated increased bank lending to farmers before elections crowds out lending to manufacturing firms. These lending distortions are larger where farmers have more political weight and where incumbents have more influence over banks. Reduced bank credit forces manufacturing firms to cut production and operate at lower factor utilization. I also provide evidence suggesting politically motivated increased agricultural lending before state elections contributed towards excessive indebtedness of farmers and a subsequent costly bailout in 2008.     

Does banks’ dual holding affect bank lending and firms’ investment decisions? Evidence from China

This study investigates the effect of banks’ dual holding on bank lending and firms’ investment decisions using a sample of listed firms in China. We find that dual holding leads to easier access to bank loans, a result that is more pronounced for non-state-owned enterprises (non-SOEs) than SOEs. We also find that dual holding distorts banks’ lending decisions and harms the investment efficiency for SOEs, while resulting in optimal lending decisions and enhanced investment efficiency for non-SOEs. For non-SOEs, further analysis suggests that optimal lending decisions and efficient investment can be achieved for firms with higher ownership concentration, and firms in which the family and foreign investors are the controlling shareholders. We argue that, in emerging markets, whether a bank plays a monitoring role by directly holding the debt and equity claims of companies relies heavily on whether the potential collusion between firm executives and bank managers can be averted, which in turn is determined by the firms’ governance framework and ownership structure.     

Competition and geographical integration in commercial bank lending

This paper tests the hypothesis that interest rates on bank commercial loans in the regions of the United States are generated in an integrated national market. The tests — of a joint hypothesis compounded of integration, behavioral models, and the absence of systematic errors in the data — are applied to 60 series of data (short-term and long-term loans in five size classes in six regions). The joint hypothesis is not rejected for five of the six regions and four of the five size classes. The exceptional region is the Southeast; the exceptional loan-size class is $1,000 to $9,000, the smallest in the sample.