Top eight most valued firms added Rs 2.05 lakh crore in market cap.
Bharti Airtel led gains, rising Rs 55,652 crore to Rs 11.96 lakh crore.
Reliance Industries also among biggest gainers, driving Sensex, Nifty rebound.
BSE Sensex jumped 1.62 per cent, NSE Nifty rose 1.64 per cent during the week.