Penelitian ini bertujuan (1) untuk mengetahui perbedaan signifikan harga saham PT. Telkom Indonesia Tbk. sebelum dan sesudah pengumuman nasional kasus pertama COVID-19 di Indonesia; (2) untuk mengetahui perbedaan signifikan volume perdagangan saham PT. Telkom Indonesia Tbk. sebelum dan sesudah pengumuman nasional kasus pertama COVID-19 di Indonesia

Penelitian ini menggunakan metode kuantitatif dengan pendekatan studi peristiwa. Unit analisis yang digunakan adalah data harian dari harga saham dan volume perdagangan saham dengan event window selama 120 hari sebelum dan 120 hari setelah pengumuman. Pengumpulan data dalam penelitian ini menggunakan teknik dokumentasi. Data akan dianalisis dengan uji paired sample t-test dengan menggunakan SPSS 25.

Hasil penelitian menunjukkan bahwa terdapat perbedaan yang signifikan terhadap harga saham dan volume perdagangan saham sebelum dan sesudah pengumuman nasional kasus pertama COVID-19 di Indonesia. Dimana harga saham mengalami penurunan sedangkan volume perdagangan saham mengalami peningkatan setelah adanya pengumuman kasus pertama COVID-19 di Indonesia.

Kata Kunci: COVID-19, Harga Saham, Volume Perdagangan Saham

This study aims (1) to determine the significant differences in PT. Telkom Indonesia Tbk stock prices before and after the national announcement of the first COVID-19 case in Indonesia; (2) to determine the significant differences in PT. Telkom Indonesia Tbk trading volume activity before and after the national announcement of the first COVID-19 case in Indonesia.

This study used quantitative methods with an approach to the event study. The unit of analysis used was the daily data of stock prices and trading volume activity with an event window for 120 days before and 120 days after the announcement. Data collection in this study using documentation techniques. The data will be analyzed by paired sample t-test using SPSS 25.

The results showed that there were significant differences in stock prices and trading volume activity before and after the national announcement of the first case of COVID-19 in Indonesia. Stock prices had decreased while trading volume activity had increased after the first COVID-19 case in Indonesia.

Keywords: COVID-19, Stock Prices, Trading Volume Activity