The NSE Nifty barometer rose 27.90 points, or 0.36 per cent, to end at yet another record close of 7,795.75. The Nifty also hit new all-time intra-day peak of 7,809.20, surpassing its previous record of 7,808.85 hit on July 8.
Software giant TCS attained a market valuation of over Rs 5 lakh crore for the first time, helped by a 2.21 per cent rally in the stock. Infosys was the best gainer today among the 30-share Sensex as it jumped nearly 3.5 per cent. Its peer, Wipro inched up by 1.9 per cent.
"Selective buying in index heavyweights and particularly IT sector maintained buying momentum on the bourses," said Rakesh Goyal, Senior Vice President, Bonanza Portfolio.
In seven straight days of gains, including 121.53 points or 0.47 per cent today, Sensex has gained 1,140.35 points to surpass previous record peak of 26,100.08 (July 7). This is its longest string of gains since September 12 when it saw nine consecutive session of upmove.
The 50-share Nifty has also extended its rise to the seventh day, its longest run since May 2014.
Brokers said expectations of the government accelerating economic reforms also triggered buying by foreign investors.
In the banking space, ICICI Bank and SBI witnessed good buying. Stocks of Bank of Baroda climbed after RBI lifted a ban imposed on foreign investors to buy shares as the foreign shareholding under portfolio investment scheme (PIS) in the bank has gone below prescribed limit.
Sectorally, the BSE IT sector index rose the most by rising 2.24 per cent, followed by Teck index 1.74 per cent, Consumer Durables index 0.37 per cent and Banking index 0.24 per cent.
Meanwhile, Foreign Portfolio Investors (FPIs) bought shares worth a net Rs 412.03 crore yesterday, as per provisional data from the stock exchanges.