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This study attempts to examine the time-varying volatility spillovers between environmentally sustainable assets and quantify the value-at-risk of the portfolios across various frequencies.

To accomplish these objectives, this paper utilizes a connectedness index-based TVP-VAR model and applies the wavelet-based VaR ratio to daily data spanning from January 2018 to September 2023.

The empirical findings reveal a notable increase in the connectedness index between green stocks and green bonds during the COVID-19 crisis, signifying evidence of a contagion effect. The portfolio’s risk ratio also exhibited a sharp rise amid the pandemic, particularly over medium and long-term horizons, driven by increased spillover among green assets. Notably, our analysis indicates that green bonds influence the connectedness system between green stocks and the value-at-risk ratio, reducing volatility spillover and portfolio risk ratios across various investment horizons. These results highlight the role of green bonds as an effective diversification asset against the risks associated with green equities.

This research investigates the dynamic connectedness and value-at-risk ratio between eight green sectoral renewable energy and non-energy equities and green bonds. We put forward some portfolio implications for green investors with an environmental consciousness who desire to decarbonize their portfolios and mitigate environmental issues.

This paper aims to examine the volatility connectedness between energy and agricultural commodities across different quantiles and time horizons.

This study uses the quantile frequency connectedness approach on daily data spanning from January 2019 to November 2023.

The results indicate a sharp increase in total connectedness during the COVID-19 crisis and the Russian−Ukrainian conflict, suggesting that both the crisis and the war contribute to volatility spillover among energy and soft commodities. In fact, the findings suggest that, in the short term, the effects of the pandemic have a greater impact on dynamic risk spillover than those of the war. However, over the long term, the consequences of geopolitical tensions related to the war exert a more significant influence compared to the effects of the pandemic.

This study confirms that energy market prices and oil uncertainty play a significant role in explaining fluctuations in agricultural commodities across diverse timeframes, frequencies and quantiles. Particularly, at extreme quantiles, the results indicate that large shocks have a more pronounced impact than small shocks. These findings hold important implications for policymakers and market participants.

This paper aims to investigate the association among trustee board diversity (TBD), corporate governance (CG), capital structure (CS) and financial performance (FP) by using a sample of UK charities. Specifically, the authors investigate the effect of TBD on CS and ascertain whether CG quality moderates the TBD–CS nexus. Additionally, the authors examine the impact of CS on FP and ascertain whether the CS–FP nexus is moderated by TBD and CG quality.

The authors use a number of multivariate regression techniques, including ordinary least squares, fixed-effects, lagged-effects and two-stage least squares, to rigorously analyse the data and test the hypotheses.

First, the authors find that trustee board gender diversity has a negative effect on CS, but this relationship holds only up to the point of having three women trustees. The authors find similar, but relatively weak, results for the presence of black, Asian and minority ethnic (BAME) trustees. Second, the authors find that the TBD–CS nexus depends on the quality of CG, with the relationship being stronger in charities with higher frequency of meetings, independent CG committee and larger trustee and audit firm size. Third, the authors find that CS structure has a positive effect on FP, but this is moderated by TBD and CG quality. The evidence is robust to different econometric models that adjust for alternative measures and endogeneities. The authors interpret the findings within explanations of a theoretical perspective that captures insights from different CG and CS theories.

Existing studies that explore TBD, CG, CS and FP in charities are rare. This study distinctively attempts to address this empirical lacuna within the extant literature by providing four new insights with specific focus on UK charities. First, the authors provide new evidence on the relationship between TBD and CS. Second, the authors offer new evidence on the moderating effect of CG on the TBD-CS nexus. Third, the authors provide new evidence on the effect of CS on FP. Finally, the authors offer new evidence on the moderating effect of TBD and CG on the CS–FP nexus.

This chapter delves into how smart city innovations positively affect workforce efficiency, residents’ quality of life (QoL), and the delivery of services, particularly within the dynamic context of smart cities: innovation, development, transformation, and prosperity. It discusses the role of technologies like cyber-physical systems, the Internet of Things, and intelligent transport systems in creating efficient, sustainable urban spaces that benefit the workforce and the broader community. The chapter highlights strategies for improving urban environments, ensuring workforce well-being, and fostering sustainable growth by examining the interplay between these technologies and urban living. The narrative emphasizes the necessity of ongoing innovation, policy support, and workforce adaptation, underscoring the importance of tailoring smart city initiatives to regional needs for maximal impact on employee performance, QoL, and service delivery. Additionally, it introduces a comprehensive framework designed to guide the development of next-generation smart cities. This framework integrates advanced technologies for optimized urban management and service provision, directly linking to enhanced employee performance through improved urban infrastructure and services. The strategic application of this framework aims to elevate economic prosperity and societal well-being, ensuring workforce efficiency is central to the urban development agenda. The enhanced employee performance, catalyzed by smart city innovations, is pivotal in driving economic vibrancy, social inclusivity, and environmental sustainability, shaping the future of urban development. This analysis will offer valuable insights for smart cities research and development in the Gulf Region, suggesting pathways for implementing these concepts to address the region’s urbanization and development challenges.

There is a rich debate on the nature of Islamic banking (IB)–growth nexus and the direction of causality governing this nexus. This study aims to focus on this issue in the case of Saudi Arabia, the largest country-holder of Islamic Banks (IBs)’ assets worldwide. It assesses empirically the nature of dynamic interactions between IBs’ financing and the real performances in the non-oil private sector (investment and GDP) in the context of a dual banking system where IBs operate alongside their conventional counterparts.

This study employs the Bounds test in the context of reparametrized autoregression distribution lags (ARDL) models to analyse both long-run and short-run dynamics governing Islamic and conventional banks’ (CBs) financings on one hand and real investment and GDP in the private sector on the other hand over the 2007q1-2016q4 period. It also uses the Toda and Yamamoto (1995) augmented Granger-causality test to assess the direction of causality governing these dynamics.

The more important results are: there is a stable and significant long-run relationship between IBs’ financing and real performances in the private sector. This nexus is governed by the “feed-back hypothesis”, implying the validity of both the “supply-leading” and the “demand-following” hypotheses. In a dual banking system context, IBs exert two effects on the financing of their conventional counterparts: a negative “crowding-out” effect and a positive and “stimulating” effect which transmits through the “competition” channel. Finally, in the long-run, steady-state, real GDP is dissociated from CBs’ financing.

This paper highlights an issue that has not received the needed attention in the case of Saudi Arabia. It has also found novel results with important policy implications.

The purpose of this study is to examine the relationship between stock options compensation and firm strategic risk-taking, employing a quantile regression (QR) model. This study aims to analyze whether the impact of stock options on firm strategic risk-taking changes across various quantiles and investigates the moderating role of firm performance.

This study is based on a sample of 90 French firms for the period extending from 2008 to 2019. To deal with the non-uniform association, the authors use a panel quantile method.

The results reveal that the impact of chief executive officer (CEO) stock options on firm strategic risk-taking varies across risk-taking quantiles. More specifically, the study’s results show a positive association at low quantile levels of strategic risk-taking, measured by research and development (R&D) and a negative linkage at high levels. The authors also find that firm performance moderates the impact of CEO stock options on strategic risk-taking.

The non-uniform relationship between CEO stock options and firm strategic risk-taking shows that the weight of CEO stock options in the total compensation can be a major determinant of the firm's strategic risk-taking attitude.

This study extends existing research on executive compensation and strategic risk-taking. Thus, this study has the potential to help stakeholders, board of directors and regulators, who are attempting to understand how the compensation contract – in particular, stock option pay – is related to the risk behavior of the agents and guide them to structure the executive compensation in an optimal way.

Why are state business relations in Egypt characterized by widely acknowledged high levels of cronyism? The purpose of this paper is to investigate the institutional factors explaining this research question with a focus on pre-2011 Egypt.

Based on a general theoretical discussion, certain institutions were proposed as being responsible. A game theoretical model is then introduced. It explains why cronyism was the best strategy for various business players in contrast to aggregating and lobbying their efforts to obtain government available resources, whether these resources are energy subsidies, public banks’ credit or regulations. Then pre-2011 Egypt is discussed as a case study. This discussion is enriched by the available literature and empirical data.

Choosing cronyism was attributed to the presence of a weak and dependent private sector, where businesspeople are unable to aggregate their power; a relatively stronger government; poor governance performance; higher levels of regime legitimization practices, such as providing generous consumer subsidies; and economic growth caused by an increase in resources rather than by governance institutional improvement. A discussion of the available literature and empirical data on pre-2011 Egypt, going over the various proposed institutional factors, helped to support these arguments.

Further empirical evidence is needed to support and modify the suggestions of this paper. More detailed indicators would have further helped this research. Moreover, more case studies, other than the case of pre-2011 Egypt, are also needed. It is hoped that this paper would encourage further research endeavors that would cover these limitations.

Governance institutional reform is needed to minimize cronyism, especially institutions such as voice and accountability, rule of law, regulatory quality and control of corruption.

This paper can explain why high levels of cronyism are witnessed in many countries of the world, including the countries of the Middle East and North Africa (MENA). The region shares many institutional factors with Egypt. Governments in the MENA region have various sources of power with regard to their dependent private sectors added to the general poor performance in various governance indicators in the region.

The deep analysis conducted in this paper for the causes of Cronyism in Egypt has not been done elsewhere. This is also true for the whole MENA region. The introduced theoretical model is the first trial of this sort and should be important for future works on this topic in the MENA region and developing countries.