Purpose – Demonstrates the feasibility of, and introduces a practical approach to enhancing, reinsurance efficiency using index‐based instruments. Design/methodology/approach – First reviews the general mathematical framework of reinsurance optimization. Next, illustrates how index‐based...

Purpose – To develop a new theory of portfolio and risk based on incremental entropy and Markowitz's theory. Design/methodology/approach – Replacing arithmetic, the mean return adopted by M.H. Markowitz, with geometric mean return as a criterion for assessing a portfolio, one gets...

Purpose – Discusses why it is necessary to align a mathematical model with the organization in order to achieve the desired results. The structure of a model's input must fit with the structure of data collection in the firm, and the output must be consistent with the decision structure....

Purpose – Derivatives are important risk management tools widely used by financial institutions, including insurers. Insurers rely on derivatives for managing actuarial, market, credit as well as liquidity risks. There is lack of knowledge and publication about the recent use of derivatives by...

Purpose – To: evaluate Prospect Theory and Cumulative Prospect Theory as functional models of decision making and risk within various contexts; compare and analyze risk models and decision‐making models; evaluate models of stock risk developed by Robert Engle and related models; establish...

Purpose – To: evaluate Prospect Theory and Cumulative Prospect Theory as functional models of decision making and risk within various contexts; compare and analyze risk models and decision‐making models; evaluate models of stock risk developed by Robert Engle and related models; establish...

Purpose – Aims to investigate the accuracy of parametric, nonparametric, and semiparametric methods in predicting the one‐day‐ahead value‐at‐risk (VaR) measure in three types of markets (stock exchanges, commodities, and exchange rates), both for long and short trading positions....

Purpose – This paper examines risk information disclosed by UK public companies within their annual reports. The types of risk information disclosed are analyzed and the authors examine whether a relationship exists between company size or level of risk and risk disclosure totals....

Purpose – This paper reports on the foreign exchange risk‐management practices among Ghanaian firms involved in international trade. The study focuses on how Ghanaian firms manage their foreign exchange risk and the problems involved in managing exchange rate exposure. It also seeks to...

Purpose – For publicly traded firms, calculating the cost of capital is predicated typically on information from the financial markets. Small businesses do not have the necessary market‐based information. As an alternative to traditional proxy approaches, this paper argues for a...