Market Opening Bell: Sensex opens flat, Nifty holds 11,900 ahead of May F&O expiry; PSU banks drag Updated : May 29, 2019 09:50 AM IST YES Bank, TCS, L&T, Wipro, and Sun Pharma were the top gainers on Nifty50 index, while Bharti Airtel, Zee, ONGC, Maruti, and ICICI Bank led the losses. All sectoral indices, except Nifty IT, were trading in red in the morning deals. Nifty PSU Bank lost the most, down nearly 1 percent followed by Nifty Media (down 0.7 percent) and Nifty Metal (down 0.6 percent). Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.