Rising for the fourth straight session, the Sensex advanced 227.49 points, or 1.19 per cent, to close at 19,406.85, a level last seen on March 15. The index had gained 448 points in last three sessions.
Similarly, the broad-based NSE's Nifty regained 5,900 level by rising 79.40 points, or 1.36 per cent, to 5,916.30, backed by surge in RIL and Dr Reddy's Lab stocks.
They said firming trend in the Asian region further fuelled the sentiment, adding the market received major support from financial and interest-sensitive stocks on optimism that RBI might cut interest rate in its monetary policy meet next week.
Pharmaceutical sector led by Dr Reddy's Lab rose significantly on hopes that growth in the domestic market would remain strong.
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Dr Reddy spurted 4.11 per cent to Rs 1,981.05, after touching an all-time high at Rs 1,999.40 and market heavy Reliance Industries by 1.97 per cent to Rs 819.30.
The interest-sensitive Auto sector index gained the most by rising 2.79 per cent to 10,757.78 followed by healthcare by 2.04 per cent to 8,694.05. Oil and gas index rose by 1.43 per cent to 8,834.26 and metal index by 1.32 per cent to 8,758.09.
The banking sector index rose by 1.37 per cent to 14,544.92 as stocks of ICICI Bank, State Bank of India, HDFC Ltd, Yes Bank, Axis Bank and Bank of Baroda rose smartly.
Shares of Jet Airways surged 10.69 per cent to Rs 635.20 after the company announced plans to sell 24 per cent equity to Etihad Airways for about Rs 2,058 crore.