Abstract
<p>This study aims to analyze the effect of COVID-19, which announced on March 2nd, 2020 in Indonesia on abnormal return, volatility, trading volume and market capitalization of <br />companies 10 days before and after the announcement. This type of research is an event study. The populations are 70 firms listed on the JII70 and 12 firms on SRI-Kehati on the Indonesian Stock Exchange and take all companies in the issuer under study as samples. Hypothesis testing will use the paired sample t-test for abnormal return and volatility variables then wilcoxon signed-rank test for trading volume and market capitalization variables. The results of the study show that there is no difference in abnormal return but there is a difference in volatility, trading volume and market capitalization before and after the announcement of COVID-19 in Indonesia.</p>
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