Purpose – The objectives of this paper are to: define business risk; identify whether economic capital could be used to mitigate this risk; and investigate business-risk measurement methodologies. Design/methodology/approach – The paper analyzes definitions used in theory and practice and...

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 – In this paper weekly volatility forecasts are considered with applications to risk management; in particular hedge ratios and VaR calculations, with the aim of identifying the most appropriate model for risk management practice. Design/methodology/approach – The study considers a...