Efecto de los anuncios de intervención por parte del gobierno para la contención de la pandemia Covid-19 sobre los rendimientos de las acciones colombianas

Abstract

The covid-19 outbreak came as shock for governments all around the world and consequently brought with it a wave of uncertainty because of the unprecedented event that was happening. This study aims to determine through the Event Study Methodology, whether the actions taken by the Colombian government in order to take action over the possible effects of the pandemic generated statistically significant impacts on 9 selected stocks belonging to the Colombian Stock Exchange, verifying in turn the hypothesis of market efficiency. For its verification, different types of announcements were considered. Such as international news regarding the evolution of the pandemic, national emergency declarations, as well as announcements of economic reactivation. In general, we can conclude that the announcement of national relevance was those that generated the highest significant abnormal returns and that the Colombian stock market presents medium efficiency since there was no uniform an immediate reaction to all of the events.