Can Composite Stock Index by Sector and Region Explain the Impact of Novel Coronavirus Disease (COVID-19) on the Economies of Major Cities?

Abstract

This study assesses the Japanese government's response to the novel coronavirus disease (COVID-19). As of July 10, 2020, the number of new cases in Japan was over twenty thousand. COVID-19 has significantly affected both lifestyle and economy in Japan. In recent domestic economy, the interdependence between municipal governments and companies is required to cope with this new threat. This study develops a composite stock index by sector and prefecture from the standpoint of what effects the increase in infections have had on industries and companies in the core municipalities. Finally, it can contribute to a strategy for coexistence with COVID-19.

Keywords: COVID-19; composite stock index; sector and regional analysis; complex network theory

JEL Classification: D53; G10; G28; L14