Mumbai, May 15 -- The key equity indices erased all early losses and traded with significant gains in the afternoon trade, supported by cooling inflation and progress in U.S.-China trade talks. Barring the Nifty PSU bank index, all the sectoral indices on the NSE were in green. The Nifty traded above the 24,850 mark. The market was volatile due to the weekly expiry of the Nifty F&O series today.

At 13:28 IST, the barometer index, the S&P BSE Sensex, jumped 630.40 points or 0.77% to 81,966.02. The Nifty 50 index added 218.65 points or 0.89% to 24,882.60.

The broader market, the S&P BSE Mid-Cap index rose 0.28% and the S&P BSE Small-Cap index added 0.81%.

The market breadth was strong. On the BSE, 2,435 shares rose and 1,357 shares fell...