The Indian equity benchmarks clocked their longest winning streak of seven days on Tuesday led by gains in index heavyweights like Kotak Mahindra Bank, ICICI Bank, ITC, Reliance Industries, HDFC Bank and HDFC. The Sensex rose as much as 421 points and Nifty 50 index moved above its important psychological level of 17,700. The Sensex ended 311 points higher at 60,158 and Nifty 50 index advanced 98 points to close at 17,722.