The 30-share index resumed higher at 19,999.51 and firmed up further to 20,059.03 before quoting at 20,002.17 at 1030hrs, showing a gain of 53.44 points of 0.27 per cent from its last close.
The NSE 50-share Nifty also moved up by 6.55 points or 0.11 per cent to 5,979.85 at 1030hrs.
Major gainer were ONGC (2.29 per cent), Hindalco (1.96 per cent), HUL (1.96 per cent), Infosys (1.76 per cent), Cipla (1.54 per cent), Wipro (1.54 per cent), Jindal Steel (1.54 per cent) and Dr Reddy's (1.13 per cent).
Asian markets were mostly higher in their early trade after Federal Reserve Chairman Ben Bernanke yesterday said Fed's asset purchases "are by no means on a preset course" and could even be expanded should economic conditions warrant.
Key benchmark indices in Hong Kong, Japan, Taiwan and Indonesia were up 0.01 per cent to 0.56 per cent while indices in China, Singapore and South Korea were down by 0.5 per cent to 0.78 per cent.
