Mumbai: Key Indian equity market indices were trading flat on Thursday amid volatility as investors continued to pursue profit-taking on the previous rises. The indices had risen for six consecutive trading days before falling on Tuesday. The markets were closed on Wednesday for the Eid-ul-Fitr. Heavy selling pressure was witnessed in automobile and IT stocks. The wider 51-scrip Nifty of the National Stock Exchange (NSE) gained by 5.25 points or 0.06 per cent, at 8,341.20 points. The barometer 30-scrip sensitive index (Sensex) of the BSE, which opened at 27,209.97 points, traded at 27,218.44 points (at 1.42 p.m.) -- up 51.57 points or 0.19 per cent from the previous close at 27,166.87 points. The Sensex has so far touched a high of 27,251.11 points and a low of 27,148.68 points during the intra-day trade. The BSE market breadth was tilted in favour of the bulls -- with 1,563 advances and 1,047 declines. Both the key Indian indices had ended on a lower note during the previous trade session on Tuesday after six consecutive sessions of gain. The barometer index had edged down 111.89 points or 0.41 per cent to 27,166.87 points, while the NSE Nifty lost 34.75 points or 0.42 per cent to 8,335.95 points on Tuesday.