Variations in fine wine prices can be prominent and have widespread economic and financial implications. Although fine wine investments are dominated by French wines, we demonstrate that significant international diversification benefits exist for investors in Italian, Australian and Portuguese...

Purpose – The purpose of this paper is to study the importance of business time, and market opening/closing times and days, for American option pricing. Design/methodology/approach – A Bermudan pricing approach is employed whereby the option can be exercised only during the times and days...

The estimation of the inverse covariance matrix plays a crucial role in optimal portfolio choice. We propose a new estimation framework that focuses on enhancing portfolio performance. The framework applies the statistical methodology of shrinkage directly to the inverse covariance matrix using...

Purpose – The purpose of this paper is to study the importance of business time, and market opening/closing times and days, for American option pricing. Design/methodology/approach – A Bermudan pricing approach is employed whereby the option can be exercised only during the times and days...