From TCS, Tata Chemicals to Tata Motors PV- Tata Group stocks surge up to 20%- What is driving the rally?

Most Tata Group stocks, including TCS, Tata Chemicals, and Tata Motors PV, surged up to 20% in morning deals on the BSE on Tuesday, 15 September, after the Reserve Bank of India (RBI) rejected Tata Sons' submission to remain private.