In a highly volatile trade, IT and oil shares, TCS and RIL in particular, helped the Sensex rise from day's low levels to end the day at fresh closing high of 22,446.44, a rise of 60.17 points or 0.27 per cent from its previous close.
This is the fifth day in a row the Sensex is ending at new high. Market players said bourses are on a record-setting spree primarily on sustained capital inflows into equities.
The 50-issue NSE Nifty rose by 16.85 points or 0.25 per cent to end at new peak of 6,721.05. It recorded its fresh intra-day life-time high of 6,732.25.
Firm global cues and frantic buying by foreign funds buoyed the market sentiment, a broker said.
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At 3.30 per cent, Wipro was the best Sensex performer of the day. SSLT was second best 2.08 per cent, followed by TCS at 2.08 per cent. Tata Steel gained 1.89 per cent. Reliance Industries (RIL) (RIL) was 1.25 per cent higher.
Brokers said the RBI's decision to keep interest rates unchanged was largely in line with investor expectations and failed to have any major immediate effect.
The Reserve Bank of India (RBI) in its first bi-monthly monetary policy left the short-term lending rate or repo rate unchanged at 8 per cent, and cash reserve ratio at 4 per cent.
Jignesh Chaudhary, Head Of Research, Veracity Broking Services said: "The benchmark stock index traded positive to range bound as some investors judged the rally to a record was overdone."