Koo AppAt 9.40 a.m., Sensex traded at 57,831 points, up 0.4 per cent or 211 points from the previous close of 57,621 points. It opened at 57,800 points. #Nifty50 traded at 17,265 points, up 0.3 per cent or 52 points from the previous close of 17,214 points. It opened at 17,280 points. - IANS (@IANS) 8 Feb 2022