Mumbai: Key Indian equity indices opened on a flat note on Thursday, triggered by mixed global cues and lower crude oil prices. Selling pressure was witnessed in IT (information technology) and TECK (media, entertainment and technology) stocks. The barometer 30-scrip sensitive index (Sensex) of the BSE, which opened at 27,857.80 points, traded at 27,817.01 points (at 9.30 a.m.) -- up a mere 1.83 points or 0.01 per cent from the previous close at 27,815.18 points. It has so far touched a high of 27,866.11 points and a low of 27,763.15 points. The BSE market breadth was marginally tilted in favour of the bulls -- with 924 advances and 519 declines. In contrast, the wider 51-scrip Nifty of the National Stock Exchange (NSE) edged down to 8,513.35 points -- down 6.15 points or 0.07 per cent. On Wednesday, the benchmark indices had closed flat induced by profit-booking, lower crude oil prices and disappointing macro-economic inflation data. The barometer index was up a mere 7.04 points or 0.03 per cent at 27,815.18 points, while the Nifty inched down by 1.55 points or 0.02 per cent to 8,519.50 points.