Bank Nifty surged 4% to 11,759 levels, as compared to 1% rise in benchmark Nifty
Bharti Airtel now carries a stable investment grade rating from all 3 major rating agencies - S&P, Moody's and Fitch.
Improved demand in the spot market also influenced prices
The largest gainer among the sectoral indices today, the Bank Nifty has rallied 10% in past four trading sessions
TCS, Wipro, Tech Mahindra, HCL Technologies and Infosys are down 1-3% on the Bombay Stock Exchange.