India, Oct. 15 -- Benchmark stock index Sensex rallied 1,534 points, or over 2 per cent, to close at a three-week high on Thursday, driven by heavy buying in banking, IT and Reliance Industries shares amid easing crude oil prices.

The 30-share BSE Sensex jumped 1,533.72 points, or 2.11 per cent, to settle at 74,315.61, near the day's high. During the session, it surged 1,548.4 points, or 2.12 per cent, to 74,330.29.

The 50-share NSE Nifty climbed 374.65 points, or 1.66 per cent, to close at 22,997.35, its highest level since September 25.

Among the 30 Sensex constituents, Tech Mahindra jumped 4.61 per cent, followed by ICICI Bank at 4.17 per cent, Bharti Airtel at 2.94 per cent, Eternal at 2.77 per cent, HCLTech at 2.58 per cent, HDFC ...