The 30-share barometer spurted by 455.73 points, or 1.77 per cent, to 26,170.39. Yesterday, it had lost 317.72 points.
Besides, value-buying in realty, healthcare,, auto, metal, banking, PSUs capital goods and oil and gas stocks positively impacted trading sentiment.
The NSE Nifty regained the 7,900-mark by surging 138.95 points, or 1.78 per cent, to 7,930.80 in early trade.
Brokers said short covering by participants as today being the last trading session of August contracts in the derivatives space supported the market.
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At 0945 hrs, the BSE Sensex was trading at 25,964.12 points, up by 249.46 points or 0.97 per cent over the previous close.
The 50-share Nifty was up by 74.65 piints, or 0.96 per cent, at 7,866.50 with Vedanta Ltd and HDFC leading the rally.
Among other Asian markets, Shanghai composite Index up 1.12 per cent, Hong Kong's Hang Seng firmed up 2.45 per cent while Japan's Nikkei higher by 1.89 per cent in early trade today.