Sensex, Nifty start flat on tepid cues; midcaps surge Updated : August 29, 2018 11:13 AM IST Shares of Vedanta, Bharti Airtel, Gail, Adani Ports, Power Grid, SBI, Tata Motors gained. Yes Bank, Coal India, Infosys, TCS, HDFC Bank, Lupin, HCL Technologies, UltraTech Cement slipped lower.