Nifty 50 index concluded with 2.07 per cent gains to its new levels of 20,686 and Sensex settled with 2.05 per cent or 1,383 points gains at 68,865, , stock market, nifty, sensex, Bank Nifty, national stock exchange, Adani Stocks, bank stocks, retail investors, All time high, Intraday, eicher motors, hindustan petroleum