This study suggests a payment portfolio model that includes new payment methods that have emerged from the development of cryptocurrency markets and central bank digital currencies (CBDCs). Our model analyzes the optimal payment choice for consumers under various macroeconomic conditions. We...

We examine the effects of limited investor attention on stock returns by using Google search volume index to measure investor attention. We also investigate whether national culture and market development have any role in this relationship. We find that the impact of investor attention on stock...

This study suggests a portfolio theory encompassing various payment methods that are newly emerging as the development of the cryptocurrency market and central bank digital currencies (CBDCs) accelerates. We determine the payment methods chosen by an individual under given conditions by...