Further, a firming trend in global markets also buoyed trading sentiments.
The 30-share index surged by 212.76 points, or 0.80 per cent, to 26,788.41 with auto, capital goods, healthcare, power and metal sector stocks leading the rally.
The Sensex had gained 576.31 points in the last three sessions.
In a similar fashion, the broad-based National Stock Exchange index Nifty shot up by 60.45 points, 0.76 per cent, to 7,988.20.
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Besides, a firming trend at other Asian bourses, tracking strong gains on the US markets, also supported the rally on the domestic bourses, propelled by talk of broader monetary stimulus in Europe.
In the Asian region, Hong Kong's Hang Seng index was up 0.92 per cent, while Japan's Nikkei moved up by 2 per cent in early trade today.
The US Dow Jones Industrial Average ended 1.31 per cent higher in yesterday's trade.