The covid-19 crisis has badly affected most of the countries and due to its impact, most of the countries reached a recession in their nation. This present study aims to examine the performance of BSE sensex stocks during the Covid-19 Pandemic in relation to its benchmark index. Secondly, the study analyzed the unit root in the returns of BSE sensex stocks in consideration of pre and during Covid -19 pandemic periods. The study period covers from 1st January 2016 to 21stSep, 2021. The first objective result rejects the null hypothesis and found a strong influence of the benchmark index on all the BSE sensex stocks. To check the unit root test study used the Augmented Dickey-Fuller test (ADF) and the study result revealed that for the pre-Covid period for all the BSE sensex stocks study found no unit root and during the covid-19 period, 13 companies show the unit root in the results. The study found the positive and highest correlation for Indus India Bank to the extent of 67%. To conclude this study observed that it is a hard time to choose the right stocks to earn the expected earnings.