Purpose - As cryptocurrencies continue to gain viability as an asset class, institutional investors and publicly traded firms have started taking investment positions in digital currencies. What firms may not be considering, however, is the effect these assets may have on their risk profiles....

Purpose - This study investigates the role of cryptocurrencies in enhancing the performance of portfoliosconstructed from traditional asset classes. Using a long sample period covering not only the large valueincreases but also the dramatic declines during the beginning of 2018, the purpose of...

Purpose - The purpose of this paper is to study the efficiency of different oil and gas markets. Most previous studies examined the issue using low frequency date sampled at monthly, weekly, or daily frequencies. In this study, 30-minute intraday data are used to explore efficiency in energy...

This study re-examines the return-volatility relationship and dynamics under a new VAR framework. By analyzing two model-free implied volatility indices - VIX (the U.S.) and VKOSPI (Korea) - and their corresponding stock market indices, we found an asymmetric volatility phenomenon in both...

The authors re-examine the return-volatility relationship and its dynamics under a new vector autoregression (VAR) identification framework. By analyzing two model-free impliedvolatility indices - the well-established VIX (in the United States) and the recently published VKOSPI (in Korea) - and...