India is a developing economy, which has undergone a series of developmental events in last two years. Covid -19 Pandemic has created a lot of challenges across various sectors of the economy. Major sectors of the economy has underwent a series of changes during this phase. IT industries adopted work from home as a long-term cost cutting strategy bringing in necessary changes in work culture. The government has also made all the possible efforts to keep up the phase of development in spite of the challenges posed by the pandemic. Pandemic gave a new dimension to the Indian stock market as many DII & FII became active leading to the further growth of the market in spite of the pandemic.The paper attempts to identify Impact of DIII in the Indian Stock Market. An attempt is made to study the relationship between Selected Nifty Indices movements, DII Inflow/Outflow, by evaluating their investments in equity, Debt and Future& Options segments by applying Statistical Tools. Thus,overall impact of these Players on the Stock Market & Economy is studied. Paper concludes suggesting the measures to identify the major players and empower them as it is necessary tobuild future developing India.