Mumbai, Aug. 19 -- The key domestic indices traded with moderate gains in afternoon trade on optimism surrounding the Prime Minister's GST reform announcement, while investors monitored FII activity and global geopolitical developments. Nifty traded above 24,950 mark.

Barring pharma, all the sectoral indices on the NSE were traded in green with oil & gas, auto and media shares advancing the most.

At 13:25 IST, the barometer index, the S&P BSE Sensex advanced 405.06 points or 0.50% to 81,678.81. The Nifty 50 index gained 107.80 points or 0.43% to 24,984.70.

The broader market outperformed the headline indices. The S&P BSE Mid-Cap index rose 0.60% and the S&P BSE Small-Cap index added 0.70%.

The market breadth was strong. On the BSE 2,4...