Mumbai, May 15 -- The key equity indices ended with major gains today, extending gains for the second consecutive trading session, aided by easing inflation and positive cues from U.S.-China trade developments. All the sectoral indices on the NSE ended in green. The Nifty ended above the 25,050 mark. Market volatility was heightened due to the weekly expiry of the Nifty F&O series.

As per provisional closing data, the barometer index, the S&P BSE Sensex, soared 1,200.18 points or 1.48% to 82,530.74. The Nifty 50 index surged 395.20 points or 1.60% to 25,062.10. In the past two trading sessions, Sensex and Nifty jumped 1.7% and 1.97%, respectively.

The broader market underperformed the frontline indices. The S&P BSE Mid-Cap index rose 0....