Banking efficiency in Gulf Cooperation Council (GCC) countries: A comparative study

We measure cost and profit efficiencies of banks operating in six GCC countries (Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, and the United Arab Emirates) using heteroskedastic stochastic frontier (HSF) models. Our results show that measures of cost and profit efficiencies of banks vary widely across the six gulf countries over the same period. We examine whether cost and profit efficiencies of Islamic banks are significantly different from that of conventional banks. After allowing for bank risk, asset quality, environmental influences such as the level of interest rate, and country effect, we find that cost and profit efficiencies of Islamic banks are similar to that of conventional banks. Our results suggest that the country-specific variables have significant impact on cost and profit efficiencies of banks operating in GCC countries. Our findings indicate that cost and profit efficiencies of Islamic banks are more volatile than that of conventional banks.     

Risk-adjusted profitability and stability of Islamic and conventional banks: Does revenue diversification matter?

Revenue diversification in banking offers opportunities and threats. Recent academic research shows that disadvantages may outweigh advantages, in terms of both volatility of profitability and bank riskiness. Literature on this topic in emerging countries and in the field of Islamic finance is limited: our aim is to empirically test if revenue diversity affects Islamic banks differently than conventional institutions. We analyze the impact of income diversification on profitability and firm-risk of banks in selected OIC countries, in the period 2007–2016, using a comprehensive dataset of 47 Islamic and 154 conventional banks, through diverse measures and econometric approaches. We find that diversification provides lower rewards for Islamic banks than conventional banks, with effects that are stronger for accounting-based measures rather than market-based metrics. Shares of non-interest income positively contribute to profitability regardless of the business model, whereas income diversification shows a not significant effect on the risk-adjusted profitability of Islamic banks. Moreover, we do not find any relationship between income diversification and stability for both conventional and Islamic banks.     

Islamic versus conventional banks in the GCC countries: A comparative study using classification techniques

This paper contributes to the empirical literature on Islamic finance by investigating the feature of Islamic and conventional banks in Gulf Cooperation Council (GCC) countries over the period 2003–2010. We use parametric and non-parametric classification models (Linear discriminant analysis, Logistic regression, Tree of classification and Neural network) to examine whether financial ratios can be used to distinguish between Islamic and conventional banks. Univariate results show that Islamic banks are, on average, more profitable, more liquid, better capitalized, and have lower credit risk than conventional banks. We also find that Islamic banks are, on average, less involved in off-balance sheet activities and have more operating leverage than their conventional peers. Results from classification models show that the two types of banks may be differentiated in terms of credit and insolvency risk, operating leverage and off-balance sheet activities, but not in terms of profitability and liquidity. More interestingly, we find that the recent global financial crisis has a negative impact on the profitability for both Islamic and conventional banks, but time shifted. Finally, results show that Logit regression obtained slightly higher classification accuracies than other models.     

The regulations–risk taking nexus under competitive pressure: What about the Islamic banking system?

Does market power condition the effect of bank regulations and supervision on bank risk taking? We focus on three regulatory tools: capital requirements, the restriction of activities, and official supervisory powers. Employing 10 years of unbalanced panel data on 123 Islamic and conventional banks operating in the Middle East and Asia, we arrive at the following conclusions. First, banking market power strengthens the negative impact of capital regulation on bank risk taking. Second, our empirical results suggest that the negative effect of activity restrictions on stability is diminished when banks have greater market power. Finally, we do not find strong evidence that the negative effect of supervisory power on banks’ risk taking is conditioned by their competitive behavior. In further analysis, we differentiate between Islamic and conventional banks regarding their competition, as well as their risk behavior. The results differ according to the banking business model. These findings could be useful for bank regulators in light of the accomplishment of Islamic banks’ regulatory framework. Indeed, the adoption of Basel III represents a significant regulatory challenge, given that it does not take into account the specificities of Islamic banks.     

Time series analysis of financial stability of banks: Evidence from Saudi Arabia

Islamic banks are characterized by their compliance to Islamic laws and practices, primarily the prohibition of interest and the trading of loans. During the 2008–2009 financial crisis, when a large number of conventional banks announced bankruptcy, no Islamic bank failures were reported. However, there is no clear consensus in the literature on the question of whether Islamic banks are more or less stable than conventional banks. To shed some light on this issue, we studied a sample of Saudi banks using quarterly data over a period centered on the 2008 financial crisis. Careful analysis of the data suggested first of all that many of the variables typically used in financial stability studies may be non-stationary, a methodological point largely ignored in the literature. Using time series methods suitable for this type of data, we concluded that individual heterogeneity may matter more than either the conventional or Islamic nature of the banks. Concentrating on the largest banks, we find the Islamic banks contribute positively to the stability of the system.     

Is spin-off policy an effective way to improve performance of Islamic banks? Evidence from Indonesia

Indonesia has adopted a dual banking system in which both conventional and Islamic banks operate. Most of the sharia-based banks, however, are still operating Islamic windows within their conventional entity. To strengthen the role of Islamic banking in the intermediation system, the government issued Islamic Banking Law No. 21/2008 to encourage Islamic windows of conventional banks to become a legal entity separate from their parent company. Because some Islamic windows have spun off in this fashion, we can employ a difference-in-difference approach to examine the effect of such a spin-off on Islamic banks’ performance, efficiency, and risk. Our study covers all Islamic commercial banks (including Islamic windows of conventional banks) in Indonesia from 2008–2019. We find that the performance and efficiency of full-fledged Islamic banks are significantly lower compared with Islamic windows of conventional banks. Moreover, our results show that financing risk increases after the spin-off. The inferior performance of full-fledged Islamic banks persists for four years after the spin-off. We also find that a conversion strategy results in better outcomes, particularly for profitability and efficiency, than a pure spin-off strategy.     

Bank image in the UAE: Comparing Islamic and conventional banks

This study investigates how bank customers in the UAE view Islamic banks versus conventional banks and whether this image affects customer loyalties or selection of a bank. We distributed a questionnaire to a convenient sample of UAE bank customers that focused on five areas: bank image, bank products, service quality, cultural aspects and religious factors, in addition to demographic attributes of the sample. The main findings of this study are: first, most UAE bank customers prefer banking with Islamic banks, although they are not satisfied with the quality of products and services; second, customers generally have a positive image of whatever bank they dealt with; third, the regression analysis results indicate that the most important factor in choosing a bank was bank products followed by service quality and then religious factors; fourth, there is a significant difference between how customers perceive UAE Islamic banks versus conventional banks; fifth, there is a significant difference in how customers perceive UAE Islamic banks based on their gender, education and duration of the relationship; and finally, there is a significant difference in how customers perceive UAE conventional banks based on their gender.     

Risk governance and financial stability: A comparative study of conventional and Islamic banks in the GCC

While the linkage between bank governance and financial stability has been discussed widely, empirical explorations of the strength of this relationship are scant. This paper examines the specific role of risk governance in promoting financial stability in banks. Using hand-collected data, it develops a Risk Governance Index (RGI) to measure the strength of risk governance structures and then examines its impact on four main indicators of financial stability for conventional and Islamic banks in the countries of Gulf Cooperation Council (GCC). The results from the dynamic panel models using two-step GMM method suggest that risk governance significantly contributes to the enhancement of the key financial stability measures. The RGI for Islamic banks is found to be smaller than their conventional counterparts and the regression results indicate that risk governance in Islamic banks has a negative impact on stability indicators. While the business models of Islamic banks have features that can enhance stability, poor risk governance can potentially negate this positive feature.     

Competition in dual markets: Implications for banking system stability

This paper investigates whether Islamic and conventional banks' stability is differently impacted by competition in dual markets where the two bank types operate alongside each other. Using a sample of 123 Islamic and 647 conventional banks from 29 countries for a period between 2010 and 2018, we find robust evidence that competition erodes the stability of conventional banks only. The stability of Islamic banks is not impacted specifically where religion is more prevalent. Focusing more deeply on religiosity and the institutional environment, such as the ease of doing business and economic freedom, we also find that such factors matter in differently shaping the competition-fragility nexus for the two types of banks.     

Efficiency in Islamic vs. conventional banking: The role of capital and liquidity

We show that higher capital and liquidity ratios increase the efficiency of conventional and Islamic banks. Using conditional quantile regressions, we further show that the effect is stronger for highly efficient, small, highly liquid, and highly capitalized conventional banks. We also find that more capitalized and liquid banks were efficient during the 2008/2009 financial crisis and the Arab Spring. Our findings support the view that the constraints imposed by Shari'a law may widen the efficiency gap between the two bank types, at the expense of Islamic banks. Furthermore, our findings suggest that the efficiency of conventional banks not only depends on bank capital and liquidity, but also on the level of bank efficiency while the relationship is inconclusive for Islamic banks. These findings provide insight into how capital and liquidity can shape bank efficiency. They suggest that higher capital and liquidity buffers serve a constraint on policymakers and may function very differently depending on the level of bank efficiency.     

Hyperbolic distance function,technical efficiency and stability to shocks: A comparison between Islamic banks and conventional banks in MENA region

In this paper, we compare banking performance and resiliency between Islamic banks and conventional banks in MENA region over the period 2002–2014. Stochastic hyperbolic and radial output distance functions are employed to evaluate banking performances. Furthermore, hyperbolic distance function methodology is extended to evaluate bank's business risk through simulations. Historical extreme observed situations in terms of profit loss from the industry are used in order to simulate their impact on the overall profit distribution within the industry. More precisely, we compare the observed profit and the simulated one followed by an abrupt fall in bank lending and non-lending activities. Results find evidence of technical efficiency differences with bank type, some evidence with bank size. It is found that conventional banks are much more vulnerable to an important drop on their lending activities than non-lending activities, while Islamic banks are equally vulnerable to any drop of the activity. Furthermore, Islamic banks are found to be less vulnerable than their counterparts when they are exposed to shocks on their lending activities. Very large banks are much more resilient than small banks whatever is the bank stream. It is also found that bank vulnerability is more important when the banks are not able to adjust their costs in the short run, and increases with the exposure to higher shocks in magnitude.     

The ‘competition–stability/fragility’ nexus: A comparative analysis of Islamic and conventional banks

The ‘competition–stability/fragility’ nexus is one of the more debated issues in the banking literature. However, while there is ample evidence concerning the relationship between competition and stability/fragility in different countries and regions, no prior study investigates this in the context of Islamic and conventional banks. We do this using data on both types of banks drawn from 16 developing economies over the period 2000–12. We measure the lack of competition using the Lerner index, and stability using both accounting-based measures, comprising the Z-score and the nonperforming loan ratio, and market-based measures, including Merton's distance to default. We employ panel vector autoregression and two-stage quantile regression to estimate the relationship. Our results lend support to the competition–fragility hypothesis in both Islamic and conventional banks. We also find the magnitude of the market power effect on stability is greater for conventional banks than Islamic banks. Lastly, banks in the median quantile of stability have a greater ability to reduce credit risk through gaining market power than banks in the lower and upper quantiles.     

Payout policy and ownership structure: The case of Islamic and conventional banks

Using a sample of Islamic and conventional financial institutions domiciled in 16 countries for the period 2000–2015, we examine how ownership structure affects dividend policy. Our main findings indicate that ownership identity is important in explaining dividend policy in these banks, albeit in different patterns. In particular, the results suggest that government ownership seems to exert negative effects on dividend payouts in both types of banks, which is in line with the preference of governments towards bank stability. With respect to family ownership, the impact is negative for conventional banks but positive for Islamic ones, consistent with agency theory. These results are to some extent similar in the case of foreign ownership where it is associated with a higher payout policy in Islamic banks, but not significant in conventional ones. Our results are robust to an array of additional analyses including propensity score matching.     

Firm valuations and board compensation: Evidence from alternative banking models

This study examines whether the board of directors' compensation schemes affect stock market valuations for banks in a dual banking system (Islamic and conventional banks). We employ an international sample of 11 countries for the period 2010–2015. Our results show that for the full sample (i.e. irrespective of the bank type), board of directors' compensation has a significant and positive impact on stock market valuations. For different bank types, we find that the positive effect of the board of directors' compensation on market valuations holds only for conventional banks, with insignificant evidence for their Islamic counterparts. We, also, examine the impact of Shari'ah supervisory board's compensation on Islamic banks value. Our results show that investors positively perceived and priced information related to this boards' compensation.     

Dividend payout strategies and bank survival likelihood: A cross-country analysis

In this cross-country study, we examine whether dividend payout decisions affect the survival likelihood of banks. Using unique international banking data from 11 countries from 2010 to 2019, we find that higher levels of cash dividend payouts increase a bank's survival likelihood, as paying dividends lowers agency problems and cost of debt and facilitates greater public monitoring. Our extended analysis shows an inverted U-shaped relation between large dividends and survival likelihood. At higher levels, payout is related to a safer position of banks in terms of default; however, at very high levels of dividends, when the levels of payouts exceed a threshold, such payout lowers the likelihood of survival. We additionally investigate the effect of the bank type to assess whether differential effects could be realised under the constrained dividend model of Islamic banks compared to the conventional banking model. Our results, interestingly, show that the positive effect of dividend payouts on bank survival is more pronounced in conventional than Islamic banks. This finding is explained by the dominant liquidity management challenges pertaining to the Islamic banking business model in which banks retain more cash and pay lower dividends. Our findings offer important insights and policy implications for regulators, bankers and a broad set of stakeholders engaging with both banking sectors.     

The bank lending channel in the Malaysian Islamic and conventional banking system

This paper examines the bank lending channel of monetary transmission in Malaysia, a country with a dual banking system including both Islamic and conventional banks, over the period 1994: 01-2015:06. A two-regime threshold vector autoregression (TVAR) model is estimated to take into account possible nonlinearities in the relationship between bank lending and monetary policy under different economic conditions. The results indicate that Islamic credit is less responsive than conventional credit to interest rate shocks in both the high and low growth regimes; however, the sub-sample estimation shows that its response has increased in more recent years becoming quite similar to that of conventional credit. Moreover, the relative importance of Islamic credit shocks in driving output growth is notable in the low growth regime, their effects being positive. These findings can be interpreted in terms of the distinctive features of Islamic banks.     

A net stable funding ratio for Islamic banks and its impact on financial stability: An international investigation

The Islamic Financial Services Board (IFSB) is the standard setting body for the Islamic banking industry. The IFSB, while endorsing the Basel III accord, modified the criteria to calculate the Net Stable Funding Ratio (NSFR) to cater for the unique aspects of the Islamic banking industry. In this paper, we calculated the modified NSFR of 136 Islamic banks from 30 jurisdictions between 2000 and 2013 and explored the potential impact the requirements of this ratio has on the financial stability of Islamic banks after controlling for bank, country, and market-specific variables. The empirical findings suggest that the modified NSFR has a positive impact on the financial stability of Islamic banks during the sample period. However, the marginal impact of the NSFR on stability diminishes as the size of the bank increases. The results remained robust after applying an alternative measure of stability and using an alternative estimation model based on an instrumental variable approach. These results validate the use of the IFSB’s modified NSFR for Islamic banks as a regulatory measure.     

Technical efficiency of Islamic and conventional banks with undesirable output: Evidence from a stochastic meta-frontier directional distance function

We examine technical efficiency of Islamic and conventional banks. We contribute to the literature by applying a stochastic meta-frontier directional distance function model with undesirable output, which helps to overcome misestimating technical efficiency. For a sample of banks from 28 countries, we find that a typical Islamic bank is less technically efficient compared to its conventional counterpart. This is due to Islamic banks using less advanced technology compared to conventional banks rather than group-specific technical inefficiency. The findings are robust across six geographical regions of the world.     

Islamic and conventional banks' soundness during the 2007–2008 financial crisis

The recent global financial crisis has induced a series of failure of many conventional banks and led to an increased interest in the Islamic banking business model. This paper attempts to answer empirically the following question: What was the effect of the 2007–2008 financial crisis on the soundness of Islamic banks and their conventional peers? Using the Z-score as an indicator of bank stability, our regression analysis (covering a matched sample of 34 Islamic Banks (IBs) and 34 conventional banks (CBs) from 16 countries) shows that there is no significant difference in terms of the effect of the financial crisis on the soundness of IBs and CBs. This finding reveals that IBs are diverging from their theoretical business model which would have allowed them to keep the same level of soundness even during the crisis.     

Perceived justice and customer loyalty in the retail banking sector in the UAE

In this study, the impacts of the three dimensions of justice (distributive, interactional, and procedural) on customers’ post-complaint behaviour (ie exit vs loyalty) of both conventional and Islamic banks in the UAE were investigated. The results showed that interactional justice (eg courtesy) and distributive justice (eg refund) play predominant roles, since they impact both positive and negative emotions and the exit-loyalty behaviour of customers regardless of the type of bank (conventional or Islamic). The results show, however, that procedural justice (eg timeliness) has no impact on either negative or positive emotions and the exit-loyalty behaviour of either conventional bank customers or Islamic bank customers. The results were interpreted in terms of cultural context and in terms of managerial implications for conventional and Islamic banks that are mostly dealing with complaint handling and employee training. The limitations of this study are also discussed at the end.