Mumbai: Benchmark indices Sensex and Nifty rebounded sharply on Friday, driven by buying in blue-chip IT stocks and consumer goods major ITC. After a flat start to the trade, the 30-share BSE benchmark gauge Sensex bounced back and jumped 953.18 points to 81,905.17 in late morning deals. The NSE Nifty surged 299.35 points to 24,909.05. From the Sensex firms, ITC, Eternal, Power Grid, Tech Mahindra, Infosys and HCL Tech were among the biggest gainers. Sun Pharma emerged as the only laggard.