The Bombay Stock Exchange benchmark Sensex rose by over 66 points in early trade on Tuesday on the back of increased buying in blue-chip stocks by funds and retail investors.
The 30-share index (Sensex), which had gained more than 17 points since Monday, gathered another 66.77 points at 12,951.76 in the first five minutes of trading.
Similarly, on the wide-based National Stock Exchange, Nifty was up by 20.85 points at 3,755.45.
Stock brokers said overnight gains on US markets, mainly triggered buying in select blue-chip stocks.
The major gainers were Reliance Industries, Reliance Energy, State Bank of India, ICICI Bank, HDFC Bank, Infosys Technologies, Satyam Computers and TCS.
However, Aban Offshore stocks tumbled nearly 4 per cent after reports that Reliance Industries terminated contract with the company.