The 30-share index, which had surged 387.92 points in the previous session, gathered another 187.57 points at 15,418.61 points in opening trade.
Similarly, the wide-based National Stock Exchange index Nifty moved up by 51.40 points to 4,575.15.
Stock brokers said sustained buying by foreign funds following better-than-expected earnings posted by several blue-chip companies and strong equity global markets mainly buoyed the trading domestic markets' sentiments.
They said expectations that the trend-setter Reliance Industries may posted encouraging quarterly results later today too influenced the sentiments.
Major gainers were Reliance Industries gained 0.34 per cent at RS 2,045, Reliance Infra by 0.95 per cent at Rs 1,177.70, Infosys Technologies by 2.39 per cent at Rs 2,006.70, Tata Steel by 1.94 per cent at Rs 422.80, Sterlite Industries by 0.96 per cent at Rs 638.80, Mahindra and Mahindra by 1.24 per cent at Rs 811.80 and Larsen and Toubro 2.10 per cet at Rs 1,520.
The US Dow Jones Industrial Average ended 2.12 per cent higher yesterday, while Japan's Nikkei gained 1.3 per cent in morning trade today
