Covid-19 is an international pandemic that has paralyzed the national economic sector. This study aims to analyze the impact of Covid-19 on stock’s abnormal return in cigarette sub sector companies listed on the Indonesia Stock Exchange in the January to May2020 period. The population of this study is5 cigarette subsector companies listed on the Indonesia Stock Exchange in 2020. The research sample selection uses census method so as to obtain 5 sample companies with an observation period of 5 months (January to May 2020).Secondary data in this study regarding stock’s abnormal returns with actual return and market return proxies. Data obtained from the company's daily stock price and composite stock price index. Descriptive statistical analysis, data normality test analysis and hypothesis test analysis are processed using SPSS 25.Statistical test with paired sample t test showed no significant difference in abnormal return between the period of 52 days before and when WFH with a significant level of 95% (α = 0.05). From the SPSS test results it is known that the significance value obtained is equal to 0.911. When compared with the significance value that has been set. The value is greater (α> 0.05). So H1which states there are differences in stock’s abnormal returns before and during the WFH Covid-19 is rejected.