Mumbai: Continuing its firm trend for the fourth straight day, the benchmark Sensex gathered over 84 points in early trade today on sustained buying by funds in heavyweights blue-chip stocks.

The 30-share index, Sensex, which had gained nearly 280 points in the past three trading sessions, recorded another 84.29 points to touch a new high of 13,790.82 in first five minutes of trading.

The wide-based National Stock Exchange, Nifty also rose by 22.05 points to trade at 3,976.80.

Stock brokers said firming global trends and strong fundamentals mainly triggered buying by foreign as well as other market players.

The major support came in from heavy-weights like Reliance Industries, State Bank of India, ICICI Bank, HDFC Bank, Maruti Udyog, Bajaj Auto, ITC Ltd, Reliance Communications, Infosys Technologies, Ranbaxy Lab, Cipla and Dr Reddy's Lab.