Dang Ngoc Hung; Vu Thi Thuy Van; Chi Le Van - In: Cogent business & management 8 (2021) 1, pp. 1-18
returns in Vietnam. To study the impact of Covid-19 on firms’ performance, we collected data about announced earnings on Q1 … stock returns, the study employed the event research method with 3 events related to Covid-19 pandemic in Vietnam. A sample … Vietnam. The degrees of influence of the Covid-19 event on each stock were also different. The paper concluded that Covid-19 …