The Bombay Stock Exchange benchmark Sensex rose by 181 points in the opening trade on Wednesday, tracking a firm trend in overseas markets.
The 30-share index, which gained nearly 515 points in the previous four sessions, added another 181.32 points, or 1 per cent to 18,167.22 points, a level last seen in February 2008.
The wide-based National Stock Exchange index Nifty surged 52.80 points, or 0.97 per cent, to 5,453.45 points.
Market sentiment remained firm in tandem with a strong trend in the Asian region and overnight gains in the US market after upbeat results from Intel Corp.
Reliance Industries continued its upward journey and rose 0.60 per cent to Rs 1,081.15 on reports that it is in talks to acquire its third shale gas asset in America.
Among other stocks DLF Ltd gained 2.38 per cent to Rs 323.15, HDFC Ltd 1.66 per cent to Rs 3,114.05, HDFC Bank by 1.69 per cent to Rs 2,100.35, State Bank of India 1.51 per cent to Rs 2,464.75 and ICICI Bank 0.99 per cent to Rs 907.50.
Meanwhile, Hong Kong's Hang Seng Index rose 1.03 per cent and Japan's Nikkei index was trading higher by 2.65 per cent in early trade today. The Dow Jones Industrial Average index rose 1.44 per cent in yesterday's trade.