The 30-share index rose by 204.65 points or 0.80 per cent at 25,826.82 in early trade. All sectoral indices, led by realty, PSU, oil & gas and banking, were in positive zone with gains of up to 1.25 per cent.
The gauge had lost 97.41 points in yesterday's volatile session.
The National Stock Exchange index Nifty scaled the 7,800-mark by surging 66.20 points, or 0.85 per cent, to 7,854.30.
Moreover, a mixed trend at other Asian bourses and overnight gains on the US markets, positively impacted sentiments, they added.
Among Asian markets, China's main Shanghai Composite Index fell 0.09 per cent, Hong Kong's Hang Seng up 0.68 per cent while Japan's Nikkei shed 0.05 per cent in morning trade today.
The US Dow Jones Industrial Average ended 0.47 per cent higher in yesterday's trade.