Raimond Maurer and Shohreh Valiani
This study seeks to examine the effectiveness of controlling the currency risk for international diversified mixed‐asset portfolios via two different hedge instruments, currency…
Abstract
Purpose
This study seeks to examine the effectiveness of controlling the currency risk for international diversified mixed‐asset portfolios via two different hedge instruments, currency forwards and currency options. So far, currency forward has been the most common hedge tool, which will be compared here with currency options to control the foreign currency exposure risk. In this regard, several hedging strategies are evaluated and compared with one another.
Design/methodology/approach
Owing to the highly skewed return distributions of options, the application of the traditional mean‐variance framework for portfolio optimization is doubtful. To account for this problem, a mean lower partial moment model is employed. An in‐the‐sample as well as an out‐of‐the sample context is used. With in‐sample analyses, a block bootstrap test has been used to statistically test the existence of any significant performance improvement. Following that, to investigate the consistency of the results, the out‐of‐sample evaluation has been checked. In addition, currency trends are also taken into account to test the time‐trend dependence of currency movements and, therefore, the relative potential gains of risk‐controlling strategies.
Findings
Results show that European put‐in‐the‐money options have the potential to substitute the optimally forward‐hedged portfolios. Considering the composition of the portfolio in using in‐the‐money options and forwards shows that using any of these hedge tools brings a much more diversified selection of stock and bond markets than no hedging strategy. The optimal option weights imply that a put‐in‐the‐money option strategy is more active than at‐the‐money or out‐of‐the‐money put options, which implies the dependency of put strategies on the level of strike price. A very interesting point is that, just by dedicating a very small part of the investment in options, the same amount of currency risk exposure can be hedged as when one uses the optimal forward hedging. In the out‐of‐sample study, the optimally forward‐hedged strategy generally presents a much better performance than any types of put policies.
Practical implications
The research shows the risk and return implications of different currency hedging strategies. The finding could be of interest for asset managers of internationally diversified portfolios.
Originality/value
Considering the findings in the out‐of‐sample perspective, the optimally forward‐hedged minimum risk portfolio dominates all other strategies, while, in the depreciation of the local currency, this, together with the forward‐hedged tangency portfolio selection, would characterize the dominant portfolio strategies.
Details
Keywords
Mohammad Rahimi, Hossein Moshiri and Ali Otarkhani
This study aims to evaluate patterns, trends and knowledge networks within social security research. By using bibliometric analysis, the research seeks to provide a comprehensive…
Abstract
Purpose
This study aims to evaluate patterns, trends and knowledge networks within social security research. By using bibliometric analysis, the research seeks to provide a comprehensive perspective on the evolution of global social security research. The purpose extends to identifying significant contributors, collaborative clusters and multifaceted issues addressed in the field.
Design/methodology/approach
This study uses bibliometric analysis to assess social security research trends and knowledge networks from 2015 to 2023. Using the Web of Science database, 6,152 relevant articles are analyzed. Quantitative techniques such as coauthorship network analysis, institutional productivity rankings and keyword clustering are applied for a comprehensive understanding.
Findings
The findings indicate a rising trajectory of publications in social security research, with the USA, China and Europe emerging as top contributors. Coauthorship patterns reveal collaborative clusters with focused research interests. Prominent authors emphasize key aspects like public policy, economics, health and labor dynamics related to social security. Keyword clustering identifies nine thematic clusters, ranging from inequality and poverty to retirement and disability reforms. A thematic map visualizes overarching categories, including motor themes, basic themes, niche themes and emerging themes.
Originality/value
This bibliometric study offers original insights into global social security research, providing a comprehensive understanding of its evolution, significant contributors and diverse thematic issues addressed. The originality lies in the application of quantitative techniques, including coauthorship network analysis and keyword clustering, to reveal collaborative patterns and thematic clusters. The study’s value extends to facilitating evidence-based decision-making for advancing the critical domain of social security through international collaboration and impactful research aligned with societal needs.
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Robert D. Hisrich and Mateja Drnovsek
Interest in the field of entrepreneurship has significantly increased among academics, practitioners and government officials in the past decade both in the USA and in Europe. The…
Abstract
Interest in the field of entrepreneurship has significantly increased among academics, practitioners and government officials in the past decade both in the USA and in Europe. The increased interest is reflected in the increased number of courses, majors and minors at colleges and universities throughout the world; the increased number of endowed chairs; the increased number of journals in the field; the increased coverage of the field by the media; and the increased interest in the provision of government support. In light of this significant increased interest, it is important to understand the state of research in the field in Europe in the last few years, the focus of this article.