The S&P BSE Sensex and NSE Nifty 50 indexes snapped their three-day losing streak led by gains in Bharti Airtel, HDFC, ITC, Infosys and Kotak Mahindra Bank. Earlier in the day, the Sensex surged as much as 711 points and the Nifty 50 index moved above its important psychological level of 9,000. However, due to weakness in banking shares, the benchmarks trimmed gains.