This study aims to test whether there are differences in the average Abnormal Return and Trading Volume Activity before and after the Covid-19. The population in this study are companies listed on the LQ-45 Index. The sample used in this study is a non-banking company listed on the LQ-45 Index. The sampling technique used purposive sampling method. Data collection is done by documenting the required data on the capital market website. The data analysis technique used is the normality test using Kolmogorov-Smirnov and hypothesis testing using the Wilcoxon Signed rank test. The results of this study indicate that there are significant differences in the average abnormal return and trading volume activity before and after the presence of Covid-19. Which is addressed with a significant value <0.05
