Passenger transportation in Japan's main metropolitan areas is operated by the JR companies, which were privatized and divested from Japan National Railways (JNR) in 1987 and by 16 major private railway companies with large-scale operations. Although their core business is transportation, the...

Although the Middle East is often perceived as politically, economically, and socially unstable, Saudi Arabia offers a different narrative. Inspired by the country's vision (Vision 2030) and the growing body of research exploring its socio-economic transformation, this article examines how...

This study investigates whether publicly listed cannabis shares provide enough risk-adjusted returns to warrant their incorporation into diversified portfolios. An equally weighted portfolio of cannabis companies is constructed using monthly data from January 2015 to December 2024. Risk-adjusted...

Purpose - this paper adopts the mean-variance approach in optimizing portfolios within the Colombian capital market, a setting full of complications such as lack of liquidity and market concentration. It delivers actionable messages for emerging market stakeholders and formulates guidance aimed...