Mumbai, June 11 -- The key equity indices witnessed small gains in afternoon trade, lifted by positive global trade developments. Optimism from Asian markets and hopeful signals from US-China trade negotiations in London boosted investor sentiment. The Nifty traded above the 25,100 level. Oil & gas shares advanced after declining in the past trading session.

At 14:30 IST, the barometer index, the S&P BSE Sensex, added 122.24 points or 0.15% to 82,513.96. The Nifty 50 index rose 38.10 points or 0.15% to 25,140.30.

The broader market underperformed the frontline indices. The S&P BSE Mid-Cap index shed 0.27% and the S&P BSE Small-Cap index fell 0.26%.

The market breadth was positive. On the BSE, 2,078 shares rose and 1,916 shares fell. A ...